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Kunkle Safety and Relief Valves Technical Reference

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Kunkle Valve industrial and commercial safety and relief valves are made for steam, air, gas, liquid, cryogenic, and nonhazardous gas applications. Products are available for ASME Section I, Section IV, and Section VIII applications, with relief capacities certified by the National Board of Boiler and Pressure Vessel Inspectors. Code and non-code versions are set, tested, and certified to customer specifications and sealed according to ASME specifications.

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Kunkle Safety and Relief Valves Technical Reference

  1. 1. K9 PENTAIR VALVES 8. CONTROLS KUNKLE SAFETY AND RELIEF PRODUCTS | EL'HN[«¥L HHLHH-ltt Techmcal Reterenc-3 tar Safer, ‘ and Rebel Products KUKMC-0398-US-1412 Ccpyngm S 2004 Pemaur ‘NNLPENTAlR. COMIVALVES
  2. 2. KUNKLE SAFETY AND RELIEF PRODUCTS IEEHNIEAL REFERENEE Contents Definitions and Commonly Used Terms . ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ..3 ASME Codes . ... ... ... ... ... ... ... ... .. ASME Code Requirements General Safety and Relief Valve Information Safety and Relief Valve Pointers . ... . . . Safety and Relief Valve Principles of Operation . Ordering Information . ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ..9 Valve Selection . ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . . . 10 Valve Selection Guide . ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . . . Valve Sizing Ewerview and Coefficient Method Sizing Formulas . ... ... ... ... ... .. Sizing Coefficient Method Sizing Table A Sizing Table B Sizing Table C and D Physical Properties Conversion Factors . ... .. Installation . ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . . . 28-29 Maintenance . ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ..3C| Terms and Conditions of Sale . ... . . . page 2 KUKM2—0398-IJS-11:12 Copyriglltb 2M6 Pemair
  3. 3. KUNKLE SAFETY AND RELIEF PRODUCTS IlCHI‘II[. ~‘. I H': IlI? :I‘IL'l Definitions and Commonly Used Terms A. S.M. E. American Society of Mechanical Engineers. A. P.l. American Petroleum Institute PRV Relief Valve. Safety Valve. Safety Relief Valve. Back Pressure The pressure that exists at the outlet of a pressure relief device as a result of the pressure in the discharge system. It is the sum of the superimposed and built up back PTCSSLFCS. Built-up Back Pressure The increase in pressure in the discharge headerthat develops as a result of flow after the pressure relief device open s. B lowdown The difference in pressure between the opening pressure and reclose pressure. May be expressed in percent of set pressure or upslgl. BodyINouloISe. -it The stationary seating surface, the inlet. 039 The pressure screw cover and/ or lever housing. May be screwed, bolted. packed, or plain lever. Chatter Abnormal, rapid reciprocating movement of the disc or the seat of a pressure relief valve. CoefficicntofDischarge The ratio of the measured relieving capacity to the theoretical relieving capacity. Disc The moveable seating surface. Dag A device attached to a safety or safety relief valvethat prevents it from opening at the set pressure. Guide That portion of the valve used to guidethe disc. Lift The distance between the seat and disc seating surfaces when the valve is if‘ the full open position. MAWP Maximum allowable working pressure. This data is found or the pressure vessel nameplate and is the maximum pressure at which the lowest set safety valve must be set Istampedl. N. B. National Board of Boiler and Pressure Vessel Inspectors. Operating Pressure The gauge pressure at which a pressure vessel is maintained in rormaloperatior. The operating pressure should not be in excess of 90 percent of the PRV set pressure. Accumulation The permitted increase in pressure developed after the valve has open ed. Usually expressed in percentage. maximum allowable accumulations are established by applicable codes for operating and fire COPIIPQCPCICS. Pre-openfllarn Ar audible or visual discharge at a pressure slightly lower than the set pressure. Warns the operator that the valve is about to operate. Pressure Relief Device A device actuated by inlet static pressure and designed to open during an emergency or abnormal condition to prevent a rise of internal fluid pressure in excess of a specified value. The device may also be designed to prevent CXCCSSIWJ internal vacuum. The device may be a pressure relief valve. a non reclosirg pressure relief device, or a vacuum relief valve. psia Pounds per square inch absolute or absolute pressure. Absolute pressure is equal to gauge pressure plus atmospheric pressure lii’. .7 psill. U1 bang: at sea levell. nsis Pounds per square inch gauge or gauge pressure. Differential pressure across the valve. equal to absolute pressure insidethe pressure vessel minus atmospheric pressure IIL7 psiIl. l]1 bargi at sea levell. Relief Valve Asprirg loaded pressure relief valve actuated by the static pressure upstream of the valve. The valve opens normally in proportion to the pressure increase over the opening pressure. A reliefvalve is used primarily with incompressible fluids lliquidsl. Safety ReliofValve Asprirg loaded pressure relief valve that may be used as either a safety or relief valve depending on the application. Safeti/ Valve Asprirg loaded pressure relief valve actuated by the static pressure upstream of thevalve and characterized by rapid opening or pop action. A safety valve is normallyused with compressible fluids. Set Pressure The gauge pressure at which a safety valve visibly and audibly opens or at which a relief wilve discharges a I" long unbroken stream of liquid. Spindle/ Stem The rod connecting to the disc. Stamped Capacity The rated relieving capacitythat appears on the device nameplate. The stamped capacity is based or the set pressure or burst pressure plus the allowable overpressure for compressible fluids and the differential pressure for incompressible fluids. Superimposed Back Pressure The static pressure that exists at the outlet of a pressure relief device at the time the device is required to operate. It is the result of pressure in the discharge system coming from other sources and maybe constant or wiriable. Miro Ring or Regulator Ring The control ring which surrounds the seat, used to control preopen and blowdown. YokclBonnet The portion of a safety/ relief valve that surrounds the spring. the spring housing. Copyright 0 2001. Pentair KUKMC-0398-US-1412 page 3
  4. 4. KUNKLE SAFETY AND RELIEF PRODUCTS IEEHNIEAL REFERENCE ASME Codes The ASME | American Societyof Mechanical Engineersl boiler and pressure vessels code requirements for overpressure protection as they relate to Kunkle products is as follows: ASME Section I This code applies to boilers where steam or other vapor is generated at a pressure of 15 psig [1.lJ3 bargl or greater and high temperature water boilers intended for operation at pressures exceeding 160 psig [1103 bargl and/ ortemperatures exceeding 25Cl°F [121 °C]. Boiler Pressure Accumulation No more than 6 percent above the highest pressure at which any val/ e is set, or no more than 6 percent above MAWP. Set Preure The set pressure of a one val/ e installation cannot be higher than the MAWF’. The set pressure of the second or other xalves in a multiple valve installation can be up to 3 percent above the MAWP. The complete range of valve settings for multiple valve installations cannot be greaterthan 10 percent of the highest set pressure. For high temperature water boilers, this 10 percent range may be exceeded. ASME Section IV This code applies to steam boilers operating at pressures not greaterthan 15 psig [1113 bargl and hot water heating boilers operating at pressures not greaterthan 160 psig [11.l]3 bargl and/ or temperatures not exceeding 25C| °F [12'| °C]. Steam Boilers Valve capacity must be selected to prevent the boiler pressurelrom rising more than 5 psig [U35 bargl above the MAWP. Hot Water Boilers Safetyvalve must be set to relieve at a pressure not greater than the MAWP of the boiler. If more than one safety valve is used. the secondary valvelsl may be set up to 6 psig [(1.51 bargl above the MAWP for boilers with MAWPs up to and including 60 psig [L13 bargl. and 5 percent for boilers with MAWPs greater than 60 psig [$.13 bargl. Capacity must be selected to prevent the pressure from rising more than 10 percent above the set pressure of the highest set valve if more than one valve is used. Tanks/ Heat Exchangers High Temperature Wa ter-to-Water Heat Exchangers Valvelsl must be set at a pressure not greater than the MAWP and with sufficient capacity to prevent the pressure fmm increasing more than 10 percent above the MAWP. Steam to Hot Water Supply Valvelsl must be a least 1" [25 mm] diameter with set pressure not greater than MAWP of the tank. High Temperature Water to Steam Heat Exchanger Valvelsl must be set at a pressure not greater than 15 psig [1113 bargl and with sufficient capacity to prevent the pressure from rising more than 5 psig [035 bargl abovethe MAWP. page 4 KUKM2-0398-IJS-1512 Copyrightb 2M4 Pemair ASME SectionVI| I This code applies to unfired pressure vessels with an inside diameter larger than 6' [130 mm] and designed for use at or above 15 psig [1.U3 bargl. Valvelsl must preventthe pressure from rising more than 10 percent or .21 psig [(1.21 bargl. whichever is greater. above the MAWP. For a single valve installation. the set pressure may not be greater than the MAWP For multiple valve installations. the first vahre cannot be set higher than the MAWP, but the other valves can be set up to 5 percent above the MAWP. The pressure rise for multiple val/ e installations can be 16 percent or-5 psig [I127 bargl. whichever is greater. When the vessel is exposed to an external heat source. such as fire, the pressure rise can be 21 percent above the MAWP Nun: l. MAWP — Maximum allwlableworlung pressure. 2. Information stated above IS based on latest code at time ol publuatio n.
  5. 5. KUNKLE SAFETY AND RELIEF PRODUCTS IEEHNIEAL REFERENCE ASME Codes - Requirements National Board Kunkle valves are manufactured at facilities that meet the manufacturing requirements of the ASME Sections 1, IV, and VIII codes for pressure relief valves. Valves that havethe relief capacity certified bythe National Board of Boiler and Pressure Vessel Inspectors bear the following code symbol stamp on the nameplate and the letters NB. Most Kunkle Valves have NB certified capacities. Code Stamps "V“ applies to all ASME Section lvalves v "HV’ applies to all ASME Section IV talves HV "UV' applies to all ASME Section VIII val/ es LN N018: I . Info rmalion staledabwe is based on latest codeattime ol publication. 2. Non— code liquid valvesare capacity rated at 25 percent overpressure. 3. Non— code air/ gashapor and steam values are capacity rated at 10 percent overpressure. Power Boiler - Section I - Code ‘V’ Sol Pressure Sat Prossuro Miiinum 0vd'prussuro' psig [tnrg] Toloruico Blowdoiiini! 15 - to [t. Ct‘3- 69)] 2psg[O.14t: arg] rm. 1014» [6.%«»] 2% 15 - 70 [I. CG- 41$] :2 pin [£1.14 min] 71 - 313 1430- 20B] 23 at aoi-iooo [2095-696] zioitin laomiiaigl iooiandup tmmaixiupi ms I. Overpressure would be Zpsig l0.I: S bargl Ior pressures between I 5 — 66 psig [L03 — 6.55 bargl. Pressuresabove 66 psig I655 bargl would have an OVQFPIESUFE of 3%. 2. Maximum blowdown is 1091: Ior 'SpecialApplicalion Section I’ values. Heating Boiler — Section IV - Code "HV" Sol Prossiro sot Pressure Blowilown onrprossiiro psig [big] Toloranoo 15 psig 15 [108] :2ps‘g 2—4ps'g Spdg Steam [: O.14 barg] [o.14 - 0.23 barg] [o.34 berg] _ _ 23989 Hotwair 15 60 [1.03 4.14] [3021 mm] NM 10% Hotwater 61 -160 [4.20- 11.0] :5% N/ A 10% Unfired Pressure Vessel - Section VIII - Code Set Prossuro sot Prossuro lowdown 0Vfl’| lI‘CI9IlI'C psig Ihrgl Tolerance 15 - 30 [108 — 2.07 barg] :2 ps'g [: O.14 bag] N/ A 3 psig [0.21 barg] 31 — 70 [214 — 4.53 buy] :2 psig [$0.14 buy] MA 10% 71 and up [4.90 barg and up] 23% N/ A 10% Non-code Set Pressure Tolerance Set Pressure, psig [bargl Sat Pressure Totoraico, psig [hag] Below 15 pdg [103 bag] to 10 [:69 [0.69 barg] Below 10 psig [O59 bag] to 5.0 psig [O34 berg] +/ — 2.0 psig 1.0.14 barg] +I- 1.0 psig [$0.01 baiu] Below 5.0 psig [o.34 barg] to o. o psig [o. o berg] Below ooticii Hg [o. o rnb] to when Hg [37 no] +I- 1.0-hoh i-ig [saa7 rnb] +/ - 0.5 psig [:0.(XX3 barg] Below 10i'tch HQ [337 mb]to 20itch Hg [674 rtb] +I- 2.0-itch Hg [2671 mb] Betmv 20-i'i1.‘. h Hg [874 mb] +I- 4.0-hch I-Q [2133 rth] capyrigm o mu Pqitai’ KUKMC-0898-US-1412 page 5
  6. 6. KUNKLE SAFETY AND RELIEF PRODUCTS IEEHNIIIAL REFERENCE General Safety and Relief Valve Information Kunkle Factory Standard Seat Tightness Code Section Stviee Ptforrnenco Stuulurl Novia: leIeakagefor15secondsat20'9s belownaneplate I and VIII Steam set preaue or at 5 psg [0.35 berg] below namqalate set IIGSIO, vmidiever is greater. WI Awe” Noeuiialeledcegebr 15eeoondset2Cl%belowrnmeplete set preeeue or at 5 peg [O35 berg] below nernqalete set preeeue. ehldiever Is gleam. No visble leakage for 30 secmds at20% below narnephe IV aid VIII Liquid set preaure or at 5 peg [0.35 barg] below namqnlate set pressure, vmidierver is greater. IV Shem No vlefle leakage for 30 seconds at 12 peg [033 bargl API - 527 Seat Tightness Model code Srvico Performance Stmrlml Sectiul 3(XJl600 AP|527<hbvislJle| eakagefor1rn‘muteat10% 6000 I and VIII Steam below namqalate set preaure or 5 peg [0.35 barg] 900 belownameplate setpressurowtid-ieverisgreata. 6o1o(O-mg seat) ‘ 521-Brtble-tignfor1 ninuteat10% below 916/917 (soft seat) VIII Aileas nameplate set peeeue cr 5 psig [0.5 barn] bdnv 918I919(eoft seat) riemeplab set preeeue. whichever B ween: API 527 - D andE orifice: 40 bmzbles/ rlin. 910/912 VIII AirIGas F thru Jorifice 20 bi. lJl: les/ met at 10% below 911/913 nameplate set preseue a 5 psig [035 barg] bdav nameplae set presure. whichever is greater. 916I917(softeeet) API521-NoIeeI<agefor1mhuIeet109$beloN 918I919 (soft seat) VIII Liqld nameplate eet pleasure. or Spelg [0.5 bug] belmv nemepleb set piesue, whichever is geeter API 527 - tocclhfor iiletsizes less tmn1'or 910/912 10cc/ h/I101 hletvdve size forinlets'zes1'ancl 911/913 VIII Liqiid larger at 10% bdcm nameplate set prewueor 5 psig [0.35 barg] below nameplate set pressure, whichever is greater. Non: API 527 IS not available on airservice for: a. Flam lever 'J‘ orilrce Models 9(1) and MID. b. Plain lever I-Iode|9I. 'lJabove 644 psig I306 barg I set pressure. page 6 KUKM2-0398-US-1512 Copyriglit0 2M4 Permir The terms "safetyvalve' and "relief val/ e" arefrequently used interchangeably. This is satisfactory to the extent that both safety and relief valres of the spring-loaded type are similar in extemal appearance and both serve the broad general purpose of limiting media [liquid or gaseousl pressures by discharging some of the pressurized liquid or gas. Some authorities restrict "safety valves“ to those installed on boilers. superheaters_ and fired vessels - all others being classified as relief valves. We prefer, however. to define them briefly as follows: Safety valves are used on gaseous service [which include air and steam]. Their design always includes a huddling chamber which utilizes the expansion forces of these gases to effect quick opening lpoppingl and closing action s. The d ifference between the opening and closing pressures is termed "blowdownf and for Section I and IV steam safety valves blowdown limitations are carefully stated in the ASME Power Boiler Code. Relief valres are normallyused for liquid service. although safety valves may be so used. Ordinarily. relief valves do not have an accentuated huddling chamber nor a regulator ring for varying or adjusting blowdown. They therefore operate with a semi-modulating action in proportion to the system pressure. Such relieving action is desirableto protect piping systems from water hammer.
  7. 7. KUNKLE SAFETY AN D RELIEF PRO DUCTS IECHNIEAL REFERENCE Safety and Relief Valve Pointers 1. ASME Codes requirethat steam and air safety val/ es have test levers. although levers may be omitted on valves used in hazardous or toxic gas service. 2. Steam safety valres may be used for air service but not vice versa. Liquid valves should be used on liquid only. 3. Safety/ relief valves should be installed vertically with the drain holes open or piped to a convenient location. A. The inlet to and outlet from a safety/ relief waive must be at least as large as the val/ e connections. 5. Every safety/ relief valve is individually tested and set by Kunkle. 6. In the event you have safety/ relief valve pmblems. first check the accuracy and cleanliness of pressure gauges and then refer to "Recommended Installation’ for help in determining the cause of your problem. Feel free to consult your sales representative. 7. When ordering. we need to know size. type of connections. model number. pressure setting. required relieving capacity. and service media, or advise your complete requirements so thatwe can make a selection for you. 8. Following are procedures on the operation and testing of safety/ relief valves: A. Avoid excessive operation of the safety/ reliefval/ e as even one opening can provide a means for leakage. Safety/ relief ielves should be operated only often enough to assure that they are in good working order. Test the valve by raising the operating pressure to the set pressure of the safety/ relief valre. allowing it to open and reset as it would in normal service. Do not hand operate the valve with less than 75 percent of the stamped set pressure exerted on the underside of the disc. When hand operating. be sure to hold the valve in an open position long enough to purge accumulated foreign material from the seat area and then allow the valve to snap shut. copmgm o 2m4 Puitai KUKMC-0398-l. lS-1M2 96927
  8. 8. KUNKLE SAFETY AND RELIEF PRODUCTS IEEHNICAL REEERENEE Safety and Relief Valve Principles of Operation Kunkle direct spring operated pressure relief valves consist of a nozzle threaded into a cast body housing which is flanged to a pressurized system. Adisc is held against the nozzle by a spring. which is contained in a bonnet. The spring is adjusted by a compression screw to permit the calibration of opening or set pressu re. An adjustable nozzle n‘ng. threaded onto the nozzle. controls the geometry of the fluid exit control chamber [huddling chamberl. The huddling chamber geometry is very important in controlling valve opening and closing pressures. and stability of operation. The nozzle ring is locked into position by a ring pin assembly. A cap attached to the top of the bonnet seals the internal calibration adjustments. Refer to the illustration above forthe location of these important components. Under normal system operation the valve remains in the closed position because the spring force lFs| is greater than the system pressure acting on the internal nozzle seating area IPA). If system pressure increases to a point when these forces are equal. the ialve begins to simmer. The disc lifts and fluid flows through the valve. When pressure in the system returns to a safe level. the valve closes. Just prior to reaching set point. the pressure relief valve leaks system fluid into the huddling chamber. The fluid now acts on a larger area of the disc inside the huddling chamber lPAh| . causing the valve to experience an instantaneous increase in the opening force. Refer to the Figure on page 7 to see relationship between Nozzle Area IA) and the Huddling Chamber Area | Ah| . System pressure acting on the larger area will suddenly open the pressure relief valve at a rapid rate. Although the opening is rapid and dramatic. the valve does not open fully at set point. The system pressure must increase above the set point to open the valve to its full lift and full capacity position. Maximum lift and certified flow rates will be achieved within the allowable limits loverpressurel established by various codes and standards. All pressure relief valves are allowed an overpressure allowance to reach full rated flow. Sprhg Force Fs Pressue Force PA page 8 KUKMD0398-US«1M2 Copyrighto 200A Pemair
  9. 9. KUNKLE SAFETY AND RELIEF PRODUCTS IEEHNIEAE REEERENEE Safety and Relief Valve Principles of Operation Fldatimsffp of Nozzle he to Hidditg Gtairbemrea Once the valve has controlled the pressure excursion. system pressure will start to reduce. Since the huddling chamber area is now controlling the exit fluid flow. system pressure must reduce below the set point before the spring force is able to close the valve. The difference between the set pressure and the closing pressure is called blowdown. and is usually expressed as a percentage of set pressure. Refer to code for appropriate blowdown. Fliid Exits l-hddiwg Gianbe Vavefiierls. FtmoeP, .,, fici1gcnDisc The nozzle ring adjustment changes the shape and volume of the huddling chamber. and its position will affect both the opening and closing characteristics of the valve. When the nozzle ring is adjusted to its top position. the huddling chamber is restricted to its maximum. This ring position will usually make the valve pop very distinctly with a minimum simmer [leakage before opening I. but the blow-down will increase. When the nozzle ring is lowered to its lowest position. minimal restriction tothe huddling chamberoccurs. Atthis position, simmer increases and the blow-down decreases. The final ring position is somewhere between these two extremes to provide acceptable performance. Liquid Service Operation On liquid service, a different dynamic situation exists. Liquids do not expand when flowing across orifices, and a small amount of fluid flow across the nozzle will produce a large local pressure drop at the nozzle orifice. This local pressure drop causes the spring to reclose the valve if the fluid flowis minimal. Liquids leaking into the huddling chamber can quickly drain out by gravity and prevent fluid pressure from building up on the secondary area of the hudd ling chamber. Liquid reliefvalves are thus susceptible to a phenomenon called chatter, especiallyat low fluid flow rates. Chatter is the rapid opening and closing ofthe pressure relief valve and is often destructive in nature. Since no visible or audible pop is heard at set point, liquid set pressure is defined as the pressure when thefirst heavy flow occurs lfirst steady vertical flowl. Ordering lnforrnation Purchase orders must show the Size, Model Number. Set Pressure, and Service. [Include flange rating with size when applicable] 1. To make a proper catalog selection, the following information will be needed: A. Connection sizes [in and out]. and types lmale, female, flanged; 'I25ff, 15i]#, 2508. 3t'Jl]ff, etc. | B. Material of construction a. Bronze b. Iron c. Steel d. Stainless Steel or other C. Pressure setting D. Service lsteam, air. gas. etc. , including any applicable codes or standardsl E. Capacity required, if available F. Unusual conditions ltemperature. location, etc! Be sure to use the capacity correction factors for superheated steam. liquid overpressure I10 percentl. air-gas temperature and density correction. G. If valve is to be "equal to" another brand. provide nameplate information or specification data from brand being replaced. 2. Ordering datafor replacement val/ es may be obtained from the valve nameplate or stamping. camsgm e mi Pam‘: KUKMC-0398-US-1412 page 9
  10. 10. KUNKLE SAFETY AND RELIEF PRODUCTS [; [Hf‘. ‘[E'. i‘»E FE’ E’-ML": Valve Selection The most critical consideration when selecting a pressure relief valve isthat the valve will be capable of passing the maximum expected flow capacity. To properly select a relief valve the user must first determine the following I. The set pressure atwhich the valve is to operate. This pressure is based on the pressure limits of the system and the applicable codes. The set pressure of the primary pressure relief valve must n of exceed the maximum allowable pressure of the system, but should be at least [I] percent above the maximum operating PFCSSLTC. nu The physical properties of the fluid media to be relieved. Capacity values are giver in the Kunkle catalogs based on air. saturated steam. and water. Kunkle valves will relieve many other [lLIdS, but information such as molecular weight. specific gravity. viscosity. ratio of specific heats, compressibility factor. and process temperature maybe necessaryto insure accurate valve selection. 3. The required relieving capacity. The ASME Boiler and Pressure Vessel Code, American Petroleum Institute Recommended Practices. and other applicable standards have many rules for obtaining the required relieving capacity and should be referenced when making this determination. The user must consider all sources of pressure generation in the system that will be protected by the pressure relief valve. Examples of pressure generation sources are pumps, heat input that may cause the system fluid to boil or expand. etc. The pressure relief valvelsl selected must exceed theworst case source of flow generation to prevent the system pressure from exceeding acceptable limits. Once the previous information has been collected, the pressure relief valve may be sized by using the capacity chants [included in each model's catalog sheetl or by performing sizing calculations [see Valve Sizing, pages 1.: 25|. The userwillalso want to consider other important factors such as I Connection size and type. This information is given in the Valve Selection Guide and in each of the Model Catalog sheets. Please note that the inlet to and outlet from a pressure relief ‘vEIl/ C must be at least as large as the valve connections to prevent valve malfunction. I Pipe Size. Connection pipe sizes should not be determined by equipment connections, but rather by the relieving capacity of the PRV. I Applicable code compliance. The ASME Code Summary section gives important information about pressure reliefvalves from the code. Pressure relief valve users are strongly encouraged to reference the full version of thecode for important rules that may not be included in this manual. I Maximum allowable seat leakage. The General Safety and Relief Valve Information [page 6| section of this manual shows the leakage acceptance criteria applied to each Kunkleyalve. Pressure relief valve users should keep in mind that if "zero leakage” is a requirement, a soft seated valve must be selected. page 1!] KUKMC-0398-US-I-‘.12 Copyright 6 2004 Pentair I Environmentalconditions. Environmental conditions play a significant role in how pressure relief valves operate. Extremely high ambient temperatures may affect the set pressure of the valve, extremely low temperatures combined with moisture can cause valves to "freeze up” and prevent proper operation, and vibration may severely shorten the service life of the valve. TheValve Selection Guide [pages it 13] in this manual has general information on the pressure and temperature limits for each valve series. For specific model limitations refer to the individual model catalog. For vibration service, please contact your local Kunkle representative for assistance. I Valve option s. Each Kunkle model is offered with useful options such as pressure tight caps. lift lever option s, or vibration dampening preparation. When selecting valve options. keep in mind that there are code requirements that may dictate what options may be used. For instance the ASME code dictates that all air. steam and hotwater I ll’. l]"‘l'-lo0"C-fl pressure relief valves must be equipped with a lift lever. Refer to the individual model catalogs for listings of available options. 0 Installation spaee. The individualmodel catalogs show envelope dimensions for each configuration and size. For assistance on valve sizing and selection, please contact your local sales representative.
  11. 11. KUNKLE SAFETY AND RELIEF PRODUCTS IECHNIEAL REFERENEE Valve Selection Guide [For specific minimum/ maximum temperature/ pressure ranges refer to individual product sections. ) Steam [ASME Section I - Power Boilers} Modollsl Material connections Inlet Sin Ruigo Mil/ MIX’ Press. Iilillilax Tunp. Body him an stop in [min] psig tiiiii-g] Ir t°c1 3(1), 6(1) CS § X 1‘/4 - 6' [31.75 - 152.4] 15/1000 [1069] -20I300 [«29/427] 921. 921, 927 (spoil t“ _ 10% bkmdam)CS $ X ‘I2 - 2' [12.7 - 50.8] 15l14(X) [1 .0'$.5] -20/3“) [-29/427] g‘1"8g' 3:; 6"’? Bronzia Brass x v: . 2v2- [121 s 63.5] 3/25o io. s9i17.2] -60/406 [51/203] 6130. 8130. BIOIIZD $ X ‘/2 - 21!! ‘ [12.7 - $5] 3/3!) [O. W20.7] -®I425 [-511219] 652 Iron $ X X 1‘/2 - 6' [38.1 - 152.4] 10/250 [(169172] ~20/44$ [-29l203] Steam [ASME Section VIII - Unfired Steam Equipment) 1 and2 Bronze Brass X ‘/2 - 1' [12.7 « 25.4] 5I250 [O.3N17.2] -60I4(B [51I208] 3 $ C3 $ X ‘[2 - 1' [12.7- 25.4] 4/333) [0.$M7.6] -20/750 [-Qlfi] 2%, 2a 33 $ X ‘/2 - 1' [12.7 - 25.4] 4/330) [O28/227.6] ~20/750 [-29f399] 3(1). GD CS 3 X 1‘I¢ - 8' [31.75 - 152.4] 15I1(XX) [LU69] -20/750 [-29I3$] 910 Cs ss x 0 ‘I2 . 2' [12.7 . 50.31 3/1400 [o.21/96.5] .20/aoo i-29/4271 911 33 $ X 0 ‘I2 - 2‘ [12.7 - 50.8] 3l14(X) [0.21I%.5] -SZNNXJ [-1951427] 912 aiorizie Brass x ‘/2 — 2' [12.7 — 50.3] 3/250 [021/17.2] -320/406 [. i95r2oe] 913 BIUIZD $ X ‘I2 - 2' [12.7 - 50.8] 3/3!) [0.21I20.7] -SNI425 [-195I219] QT; $3‘ 6132' iaionzie Brass x ‘I2 . 21/2' [12.7 — 63.5] 3/250 [o.21/17.2] -60/406 [51l208] 6(B0. 8130. Bronze § X ‘/2 -2‘I2' [12.7- $5] 313!) [0.21IZ).7] -d)I425 [51I219] 632 Iron § X X 1‘/2 - 6' [33.1 « 152.4] 10/250 [O.6917.2] -20/406 [<29f203] Steam [ASME Section IV - Low Pressure Steam Heating Boilers) sao Iron Bronze x 2 . 3- [side . 76.2] T. $4 Bronze Bass X ‘I2 - 2' [12.7 - 50.8] 6%! ) Bronze $ X ‘/2 - 2' [12.7 - 50.8] 324 Iron ss x x we - 6' [eat - 152.4] Steam [N on-code)? 40?. ‘X1 33 $ X ‘/2 - 3/4' [12] - 19.05] 15orily [1.0] zsooiiiy [122] isoniy [1.o] zsooniy [122] isoniy [1.0] zsooiiiy [122] isoniy [1.o] zsooniy [122] 1/400 [0.07f27.6] -60l&50 [51I454] lots: 1. Set pressures less than 15 psig lI. O barglare non—code only. 2. See also ASME Section VIII steam valves for non—code steam applications. copyiigiviozooinemir KUKMC-0398-US-1li12 pagelf
  12. 12. KUN KLE SAFETY AN D RELIEF PRO DUCTS IEEHNIEAL REFERENEE Valve Selection Guide [For specific minimum/ maximum temperature/ pressure ranges refer to individual product sections. ) Air/ Gas [ASME Section VIII) Modolfsl Material connections Inlet She Rmgo Iinltdax-" Press. M'IIIMax‘ Term. Body Trin NPT i= i.so in [mint psig [bargl ‘F ['01 1 and 2 Brass Brass x ‘/2 - 1' [12.7 — 25.4] 5/250 [034/17.2] 450/406 [51/208] 30 Brass Brass x W [(5.35] 00/4000 [4.1/275.8] 20/300 [-6.6I150] 139 Bronze ss x it: - 2/. ‘ [121 -1905] 1000/2500 [69/344,8] -320/360 [~195/177] £, £ Q $ X ‘/2 - 1' [12.7 - 25.4] 43) [O.2iBI2'7 .6] -20/150 [-QISN] 266. 267 S3 S5 x ‘/2 -1' [12.7 - 25.4] 4/3300 [028/227.6] 40/750 129/399] 3110. B00 cs SS x rm -5‘ [31.75 -152.4] 15/1000 [1.0/9] -20/800 [-195/427] 3305 Aii. minum S x W [6.35] 1000/5500 [69/379.3] -20/135 [<29/85] sans. 33365 Aluminum SS W [(5.35] 2.100/6500 [138/445.3] -20/135 [-29/85] 337 Iron Bronze x 2 -3- [508 - 76.2] 1/60 [007/4.14] -20/406 [-29/208] am Aiimnm Brass X 2' [503] 5/30 [0.3/207] -30/400 [-34/204] 363 Bronze s x I/2 . 2/4‘ [12.7 -19.05] so/1000 [3.4/69] ~320/360 [495/177] ea $ $ x I/2- 3/4' [12.1 -19.05] 50/2500 [31/172.4] -320/G60 [-195/177] filufifiggfgsfé dm Brass Brass x ‘/4 . I/ z [6.35- 12.71 3/roo [0.21/27.6] 20/400 129/204] 910. 916301! seat)‘ $ 35 X 0 ‘I2 - 2' [12.7 - 50.8] 3/1400 [0.21I$.5] -NIH! ) [-29/427] 911. 911 (soft seat)‘ S8 SS x 0 ‘/2 -2' [121 . 50.3] 3/1400 [021/96.5] .320/aoo [.195/427] 912. 913 (soil seat)‘ Bronze Brass X ‘/2 -2' [12.7 - 50.3] 3/300 [0.21/Z17] -320/406 [-195/200] 913. 919 (son seat)‘ Bronze SS x I/2 - 2' [12.7 - 50.3] 3/1400 [021/96.5] -320/425 [-195/219] :3: $, Binnzo Brass X in — 21/2' [12.7 — 63.5] 3/250 [0.21/11.2] —B0/400 [-51/203] 6030, 6130. 6320 Bronze 35 x i/2-2'/2' [12.7.s3.5] 3/300 [o.21/20.7] -60/425 [-51/219] 052 lion s X x we -8' [m.1 -152.4] 10/250 [000/11.2] -20/406 [-29/208] Air/ Gas’ IN on—codei 23) (Kynafl seat) Ali. l1'I'n1.rrI SS X ‘/4' [635] 3(X)I15C0 [20.7I103.4] -20/185 [-39185] am (Kynafl BBB! ) Alrrlnm $ X ‘lo’ [635] 1(XX)I6lXXJ [69I413.8] -31/185 [-29/55] 818 (Tofloml seat) CS SS/ Brass X 2' [50.8] 120/150 [3.3/10.3] -20/3!) [<29/150] Air/ Gas [Vacuum] in H9 [mm Hg] 215v Iron Bronze x 2.3- [50.8-76.2] 2/29 [so/ ms] 20/406 [-29/200] 910,916(so1tsBBt)‘ (S $ x 0 i/2-2' [12.7.5o. o] 6/29 [152/730] -20/800 [-29/427] 911.917(so1t seat)‘ 33 ss x 0 v2.2‘ [12.7.5o. s] 6/29 [152/736] -320/800 [-195/427] 912, 913 (soft seat)‘ Bronze Brass x i/2-2' [121-50.0] 0/29 [152/ms] -320/403 [.195/200] 913.919(s0ftseat)“ Bronze ss x '/2.2‘ [12.7<5o. s] 6/29 [152/T36] -320/425 [.195/219] X = Standard 0 = OptionaI Notes: I. Sell seal available on some models. 2. See also Section VIII airvahres Ior non—code air/ gasapplications. non—code onl/ . ii. Temperature limits ol soft seats determine operating limits of valve. 5. Kynar‘3 or Urethane Seal. Set pressura less than 15 psig [I .0 barglare pagef2 i<ui<i.1c-oavwsi/ .12 conyragiuiozooipernar
  13. 13. KUNKLE SAFETY AND RELIEF PRODUCTS IECHNIEAL REFERENEE Valve Selection Guide [For specific minimum/ maximum temperature/ pressure ranges refer to individual product sections. ) Liquid [ASME Section IV — Hot Water Boilers) Modollsl Material connections Inlet She Range M'IIIMax' Pres. M'I'ilM| x1 Tuna. Body Trin NPT FLED it [mini psig Illltgl ‘F PC] 537 (soft seat) Iron/ Bronze Brassx 3/4 . 2 119.05 - 50.3] 15/160 11.0/111 .20/250 129/121] Liquid [ASME Section VIII) 910. 916 (soft seat)? 91 1. 917 (501! seat)’ 912. 913 (soft seat)’ 913. 919 (son seat)’ 0 ‘/2 - 2‘ [127 -50.8] 3/1400 [0.21/96.5 <20/81X) [«29I427] O ‘/2- 2' [127 - 50.8] 3/1400 [O.21I%.5| -320/81!) [-1%I42T] ‘/2 « 2 [127 -50.3] 3/300 [0.21/20.7] «320/M3 [#967208] ‘I: - 2' [127 - 50.8] 3/1400 [O.21@.5] -320/48 [-1%I219] 11“ 8§1'313 XXXX Liquid [N on-code) 19.20 Bronze Bronze x 0 ‘/2 .3 [127-76.2] 1/aoo 1o. o7/20.71 .60/405 151/2091 19M.2nM Bronze S x o 2'/ :: -3’ 1695-7321 1/500 10.07/34.51 -G0/406 151/2001 71s iron S x ‘/2 .2 1127.50.31 1/250 1o. o7/17.21 .20/406 1.29/2091 171.1719 cs S x 1/2 -2 1127.50.51 1/400 10.07/21.61 -20/550 [#297288] 1719 38 S x i/2.2 1127.50.31 1/400 [0.07/27.6] .20/550 1.2972931 91 iron Bronze x x 11/: -6' 133.1 -152.41 5/400 10.34/27.61 -20/400 1-29/2031 219.23 iron Bronze x 3, 4.and6' [762-152.4] 60/200 14.1/13.51 .20/406 1-29/2091 140 S S x 3/: -'/2' [95427] 10/300 [0.69f20.7_| -B0/409 1.51/2001 264.265 cs S x V: .1‘ 1127.25.41 4/330010.28/227.6] .20/750 [.29/3991 293,237 S S x 1/: -1- 1121-25.41 4/300019.28/227.6] 90/750 029/399] 91o.91s(sonsear1-° cs S x 0 V2 .2 1127.50.31 3/140010.21/96.5 .20/800 [.29/4271 911.917(softsIat)" S S x o 1/2 -2 1127-50.31 3/140010.21/93.51 -320/aoo 1-195/4211 912.918(soft sear)? Bronze Brass x «/2 .2 1127.50.31 3/aoo 10.21/20.71 -320/406 1.195/2091 913. 919(so1fsBat)’ Bronze S x ‘/2 -2 1127.50.31 3/140010.21/90.51 -320/425 1.195/2191 200A Bronze Brass x 3/4.1‘/2' 119o5.aa.11 1/20o1o. o7/13.51 .60/406 151/2091 2001-i Bronze S x O 3/r.2119n5.50.a1 1/20010.07/13.31 -60/406 1.51/2001 Liquid - Underwriters Laboratories [UL] and Factory Mutual Research (FM) For Fire Pump Water Relief 218. 228 Iron Bronze X X 3 4 and 6' [762 - 152.4] 63/200 [4.1I13.8] -20/406 [-29/208] 918(so1l seat)“ Bronze B1288 X 3/4 - 1' [1905 - 25.4] 81/250 [4.1I17.2] -20/roe [-29/213] Other - Drip Pan Elbow 299 Iron N/ A X X 2 . 8' [5080 - 203.2] N/ A N/ A -20/406 [<29/208] X 2 Standard 0 2 Optional Nets: 1. Set pressures below 15psig ll. O bargl are 2. Temperature limits ol solt seats determine 3. FM Approved only. non—code only. operating limits olvaire. copyriginozoospenurr KUKMC-0398-US-1lr12 pagel! )
  14. 14. KUN KLE SAFETY AND RELIEF PRO DUCTS IEEHNIEAL REFERENEE Valve Sizing After the required relieving capacity has been determined. the pressure relief valre may be sized by using the capacity charts that are included in each model‘s catalog sheet. The capacities given in those charts may be adjusted for special conditions such as fluid density and temperature by using the correction factors given in Tables B through D [pages 18-20]. Valves may also be sized by performing sizing calculations perthe formulas [pages 15 and 16| in this section. Most Kunkle «elves may be sized by using the "Coefficient Method‘ [listed below]. These valves typically are high lift valves where the nozzle bore is theflow controlling orifice. This calculation method involves selecting the valve model and corresponding flow coefficient and orifice area from Table A [page 16f and then using the capacity formula [page 15) forthe service in which the valvewill function. IV-A Coefficient Method Follow these steps for calculating what orifice size is necessary to flow the required capacity: 1. Select the Model Familythat you are interested in from the Valie Selection Guide lpages 10-13). 7. From Table A [page 17]. record the Flow Coefficient lKd| corresponding to the service in which the valve will operate. 3. Select the properformulalsl forthe service in which the valve will operate. Calculate the minimum required orifice area. at Select the Orifice/ Size Designation from Table A [page 17) that has a Flow Area closest to. but not less than the minimum required orifice area calculated in step 3. Kunkle Models 30, 541, 54.2, and 568 usethe "Slope Method‘ for sizing calculations. These valves are typically low lift valves. where the annular orifice between the disc and the nozzle seat is the flow controlling orifice. These models are characterized by having a linear increase in capacitywith respect to inlet pressure. The "slope" definesthis direct relationship of inlet pressure to capacity. Consult your sales representative for sizing assistance. Kunkle Models 1, 2. 19, 20, 200,715. 171, 171$. 91,218. 228. and 1A1] usethe "KA Method’ for sizing calculations. This method is similar to the slope method. in that it is used for low lift valves and is empirically derived. The major difference is that the relationship between inlet pressure and capacity is not linear. These valves are characterized by having low lift that varies with inlet pressure, which makes the flow controlling orifice area indeterminate. Consult your sales representative for sizing assistance. page 14 Kuxmcmeousiuz copyregmo 200:. Penni-
  15. 15. KUNKLE SAFETY AND RELIEF PRODUCTS IEEHNIEAL REFERENEE Valve Sizing U. S. Units Metric Units Steam — Sections I, IV and VIII [15 psig and above] A= %mVi'. T AA - ' *1 52.5K. ,P. K,, , Steam - Non Code [less than 15 psig) W T2 w T? “= ‘755F; K; A=35irr; iz; Air - Section VIII [15 psig and above) V MTZ A V1/MTZ A = 6.32 d , = 17.U? CRa I’. Voliiimukflow Vdll'lIOtl'kFiDVl W TZ A _ 1.316W TZ A = — Elia I Manflow MIIIFIMN Air - Non-Code [less than 15 psig) v MTZ A = __VF. _ “"1 A = ‘ ‘_ 2 12503 , K,, F, [F, -F15 Liquid — Section VIII [15 psig and above) [ [ j o e A= f9E Jlfl A-STOEIK. (1.19.-D25 Liquid - Non-code ————— Q G A = A = "a? K. ""°°“"‘ “‘°‘5°""’[ F, - Coefficient of Subcritical Flow "M" I. Consult your sales representative for sizing ———] assistance for pmduclgroups: Fig. I and 2; _____ _-‘F """"‘ F I9202fI)-F 30-F 1is 171 ms ; =,= /(‘; |§—1)(r)2,]~:1J_r_ -9.. . . I9._ig. ., . Fig. 91 . 218. 228; Fig. 150; and Fig. MI. 542 and 568. eopyraginozoiiipemar Kuimc-aaoa-its-1412 pageI5
  16. 16. KUNKLE SAFETY AND RELIEF PRODUCTS 3: l_'l<l‘. ll_]i‘i; ii‘ l'%; l‘. j: Valve Sizing I i A Required effective discharge area of the vawe, in! [cmi’] W Mass Flow Rate. |b. i’hr [kg/ hr] V Volumetric Flow Rate (gases, vapors) in SCFM [Nm3i'hr] at standard atmospheric oonditions 0114.7 psia and 60"F [1013 bara/ O"C] O Volumetric Flow Rate (liquids) in GPM [m3i'hr] at standard atmospheric conditions 0114.7 psla and 70“F [1.013 baral21“C] K4, ASME Flow Coetticient o1 Discharge P, See chart below P2 Atmospheric Pressure _ 14.7 psia p, Set Pressure (psig) p2 Back Pressure (psig) F2 Coefiicient ol Subcritical Fbw k Ratio 01 Specific Heat » 1.31 tor Steam, 1.4 for Air r Ratio of Back Pressure to Upstream Relieving Pressure _ PQJP1 M Molecular Weight 01 Process Medium T Relieving Temperature. ‘R - ‘F + 460 [‘"K _ ‘C + 273] Z Compressibility Factor (assume Z - 1 ii unknown] C Gas Constant based on k (it unknown, use C e 315) G Speciiic Gravity oi process fluid at 70‘F[21‘C] K5,] Superheat Steam Correction Factor Designation Section Definition Section I Steam Set pressue + 3% or 2 psi overpressure PI (15 psig and above) (WhiCh€‘v! E'f is greanar)+1-1.7 psia P Section IV Steam Set pressue + 5 psi overpressure + 14.7 psia ' (15 psig and above) Ior Low Pressure Steam Boilers Section l/ Iiot Water Set pressue + 10% overpressure + 14.7 psia PI (15 psig and above) lor IlotWe1terI3c‘ers No -Cod’ ’ 1.. . P, (benbw Set pressue + 10»; overpressure + 14.7 psia Section VIII Steam Sel pressue + 10% or 3 psi overpressue PI (15 psig and above) iwhizheiier is greater) 4. 1-1.7 psig P, Noncode A" Set pressue + 109:3. overpressure +1-1.7 psia lbeI: >u- 15 psig) Section VIII Air Set pressue + 10% or 3 psi overpressue PI (15 psig and above) lwhizheier is grea1er)+1-4.7 psia No -Cod’ L d P, (benbw 1:p: ‘;; Set pressue (psig) pl Section VIII Liquid 3e1p[eSSme(p9g) Pentair (15 psig and above) page 15 KUKMC-(E98-US-I412 Copyright 92- 2111-1.
  17. 17. KUNKLE SAFETY AND RELIEF PRODUCTS IIQI1 ‘I I; -, LI»: iC: Valve Sizing Model Oriiicelsize F InwArea ———————— —— Flow Coeificient (K41 ———————— —~ Family Designation in! [uni] Non-Code and ASME ASME Non-Code and ASME Section VIII Seclionl Section IV ASME Section VIII Air/ Gas and Steam Steam Steam Liquid 189 C 0.084 [0219 0.874 D 0.034 [0219 0.874 C 0.110 [0.710 0.766 0.408 264 D 0.110 [0.710 0.766 0.408 C 0.110 [0.710 0.766 0408 II 1.838 [11.858] 0.850 337 J 2.786 [17974] 0.£f>O K 4.037 [23045] 0.330 D 0.533 [(4.439 O.8C6 i: 0.333 [5374 0.303 537 G 1.767 [11.400] 0.806 I I 3.142 [20271] 0.303 D 0.121 [0.781 0.878 0.878 0.710 C 0.216 [1.394 0.878 0.878 0.710 F 0.337 [2.174 0.878 0.878 0.710 910 G 0553 [3568 0.878 0.878 0.710 II 0.864 [5.574 0.878 0.878 0.710 J 1.415 [9129 0.878 0.878 0.710 II 5.080 [32774] 0.818 930 J 6.350 [40.%8] 0.818 K 7.620 [-19.161] 0.818 D 0.121 [0781 0.878 0.878 0.878 E 0216 [1394 0.878 0.878 0.878 F 0.337 [2.174 0,878 0.878 0.878 6010 G 0.553 [3568 0.878 0.878 0.878 II 0.864 [5574 0.878 0.878 0.878 J 1.415 [9.129 0.878 0.878 0.878 J 1.414 [(3.123 0.878 0.878 0.878 K 2.022 [13045] 0.878 0.878 0.878 L 3.138 [20245] 0.878 0.878 0.878 M 3.960 [25548] 0.878 0.878 0.878 6252 N 4.774 [30.80(L'] 0.878 0.878 0.878 P 7.018 [45.277] 0.878 0.878 0.878 0 12155 [78419] 0.878 0.878 0.878 R 17.600 [113.548] 0.878 0.878 0.878 ccp, i.gmr. 200i. Pentair KUKMC-0398-US-11.12 [$59317
  18. 18. KUNKLE SAFETY AND RELIEF PRODUCTS IEEHNIEAL REEERENEE Valve Sizing Table B - Steam Super Heat Correction Factor, K5,, Sat Stunhd Ibhl Shun Tanporlmo ‘F [‘c‘| Pusan steam 280 300 320 340 380 380 400 420 440 480 480 500 520 540 580 P059 [5091 T0fl¢| -'F l'Cl [1331 [1491 [100] [171] [132] [193] [1051 [219] [an [230] R49] [330] [371] [382] [393] 15 [1063 250 [121] 1.00 1.00 1.00 .99 .99 .98 .93 .97 .96 .95 .94 .93 .92 .91 .90 20 [1 .38] 29 [126] 1.00 1 .00 1 .1!) .99 .99 .98 .98 .97 .98 .95 .94 .98 .92 .91 .90 40 [2.76j 87 [142] 1.00 1.00 1.00 .99 .99 .98 .97 .96 .95 .94 .98 . Q .91 .90 60 [4.14] 303 [153] 1 .00 1 .00 .99 .99 .99 .97 .96 .95 .94 .93 .92 .91 .90 80 [5.52j 124 [162] 1.00 1.00 .99 .99 .98 .97 .96 .94 .98 .92 .91 .90 100 [6.90] as [170] 1 .00 1 .00 .99 . m .97 .96 .95 .94 m .92 .91 120 [a.2r3 350 [177] 1.00 1.00 .99 .90 .97 .96 .95 .94 .90 .92 .91 140 [985] $1 [183] 1 .1!) 1 .1!) .99 .98 .96 .95 .94 .93 .92 .91 160 [1102 371 [138] 1.00 1.00 .99 .98 .97 .95 .94 93 .92 .91 180 [12.4] no [193] 1.1!) .99 .98 .91 .96 .95 .93 .92 .91 200 [1382 388 [198] 1.00 .99 .99 .97 .96 .95 93 .92 .91 220 [152] :95 [m2] 1 .00 1 .00 .9 .99 .96 .95 .9! £9 .92 240 [16.63 400 [206] 1.00 .99 .93 .97 .95 .9: .90 .92 280 [17.9] 09 [210] 1 .00 .99 .98 .97 .96 .94 .93 .92 280 [19.3j 416 [213] 1.00 1.00 .98 .97 .96 . § .93 .92 300 [20]] 422 [21 7] 1 .1!) .99 .98 .96 .5 .93 .92 350 [24.1j (36 [25] 1.00 1.00 .99 .96 . $ .94 .93 400 [218] 448 [31] 1.00 .99 .98 .3 .95 .93 450 [31.03 460 [246] 1.00 .96 .96 .96 .94 500 [345] 470 [213] 1 .1!) .96 .3 .98 .94 550 [37.93 490 [249] .97 .97 .97 .95 600 [41 .4] $9 [54] .97 .97 .97 .91 650 [4-1.8: 497 [58] 1.00 .99 .97 700 [48.3] $8 [263] 1 .110 .99 .97 750 [51.r_ 513 [267] 1.00 1.00 .93 800 [552] E) [271] 1.00 .99 350 [5663 527 [275] 1.00 .99 900 [62.1] $3 [278] 1.00 1.00 950 [65.5j 540 [282] 1.00 1000 [890] 548 [288] 1.00 1050 [7243 552 [239] 1.00 1100 175.9] 558 [22] 1150 [7933 563 [295] 1200 [82.7] $9 [$1 Revised GPBCIIY Ior 'Super Heal Sleamz‘ mullnplycapacnly o1Vah. -e :1 Factor noled above. page 18 KUKMC«039&US-1412 Copyriyitfl 2M4 Pemai‘
  19. 19. KUNKLE SAFETY AND RELIEF PRODUCTS IEEHNIEAL REFERENCE Va lve Sizing sot saturated Tout Stain Tompcatun ‘F (‘Cl Prawn Steam $0 600 620 640 “O 480 700 720 740 760 ‘I80 800 N0 ‘IMO 1100 viii than] T¢mo. ‘F (‘cl [305] [3161 [3241 [33] [349] [3643 [3711 [382] [3931 [405] [416] [411] [482] [537] [593] 15 [1.0G: 250 [121] .39 .88 .87 .36 .36 .35 .64 .33 .33 .32 .81 .31 .73 .75 .72 Z) [1 .38] 259 [126] .89 .88 .87 .86 .86 .85 .84 .83 .83 .82 .81 .81 .78 .75 .72 40 [2.40: 287 [142] .89 .88 .87 .87 .86 .85 .84 .84 .83 .82 .82 .81 .78 .75 .72 E) [4.14] 313 [153] .89 .88 .87 .87 .86 .85 .84 .84 .83 .82 .82 .81 .78 .75 .72 80 [5.52: 324 [162] .89 .89 .88 .87 .86 .85 .84 .84 .83 .82 .82 .81 .78 .75 .72 1G) [681] 388 [170] S) .89 .88 .87 .86 .85 .85 .84 .88 .82 .82 .81 .78 .75 .72 120 [3.2r3 350 [177] .90 .39 .93 .37 .36 .35 .35 .34 .33 .32 .32 .31 .73 .75 .72 140 [965] 361 [183] 3) .89 .88 .87 .86 .85 .85 .84 .83 .82 .82 .81 .78 .75 .72 160 [11.0: 371 [188] .90 .89 .88 .87 .86 .86 .85 .84 .83 .82 .82 .81 .78 .75 .72 180 [12.4] 380 [1 N] .8) .89 .88 .87 .86 .86 .85 .84 .83 .82 .82 .81 .78 .75 .72 Zn [13.8: 388 [198] .90 .89 .88 .87 .86 .86 .85 .84 .83 .83 .82 .81 .78 .75 .72 220 [15.2] 3% [211] .91 . % .89 .88 .87 .86 .85 .84 .8 .88 .82 .81 .78 .75 .72 240 [16.6: MB [206] .91 .90 .89 .88 .87 .86 .85 .84 .84 .83 .82 .81 .78 .75 .72 fi [17.9] 409 [23] .91 S) .89 .88 .87 .86 .85 .85 .84 .83 .82 .81 .78 .75 .72 280 [19.3: 416 [213] .91 .90 .91 .88 .87 .86 .85 .85 .84 .83 .82 .82 .78 .75 .72 31) [20.7] 422 [217] .91 . % .89 .88 .87 .86 .86 .85 .64 .83 .82 .82 .78 .75 .72 350 [24. 1: 436 [&4] .92 .91 . % .89 .88 .87 .86 .85 .84 .83 .83 .82 .78 .76 .72 4(1) [27 .6] 448 [81] .92 .91 £3 .89 .88 .87 .86 .85 .84 .84 .83 .82 .79 .76 .72 450 [31.0: 460 [238] .96 .92 .91 .89 .88 .87 .86 .86 .85 .84 .83 .82 .79 .76 .72 51!) [34.5] 470 [243] . % .92 .91 . M .89 .88 .87 .86 .85 .84 .83 .82 .79 .76 .78 550 [37.9: 480 [249] .94 .92 .91 .90 .89 .88 .87 .86 .85 .84 .83 .82 .79 .76 .73 300 [41.4] 430 [254] .94 .93 .92 .90 .30 .33 .37 .36 .35 .34 .34 .33 .79 .76 .73 650 [44.8: 497 [258] .95 .94 .92 .91 .90 .89 .87 .86 .86 .85 .84 .83 .79 .76 .73 700 [48.3] 5% lfi] . % .94 .93 .91 3) .89 .86 .87 .86 .85 .84 .83 .79 .76 .73 750 [51.7: 513 [267] .96 .95 .98 .92 . Q) .89 .88 .87 .86 .85 .84 .83 .79 .76 .73 8!! ) [552] 520 [271] .97 .95 .94 .92 .91 E) .88 .87 .86 .85 .84 .84 .80 .76 .78 850 [58.6: 527 [275] .98 .96 .94 .98 .92 .90 .89 .88 .87 .86 .85 .84 .80 .76 .73 Q! ) [62.1] 5% [278] .9 .97 .95 . % .92 M) .89 .88 .87 .86 .85 .84 .80 .77 .78 950 [65.5: 540 [282] .99 .97 .95 .94 .92 .91 .89 .88 .87 .86 .85 .84 .80 .77 .73 1000 [890] 546 [288] .90 .93 .93 .94 .93 .91 .90 .39 .37 .33 .35 .34 .30 .17 .73 1050 [72.4: 552 [289] LG) .99 .97 .95 .96 .92 .90 .89 .88 .87 .86 .85 .80 .77 .73 111!) [75.9] 558 [82] 1.1!) .99 .88 .95 .94 .92 .91 .80 .88 .87 .86 .85 .81 .77 .73 1 150 [79.3: 563 [295] LG) .99 .98 .96 .94 .92 .91 .90 .88 .87 .86 .85 .81 .77 .73 12!! ) [82.7] 569 [X] 1 .1!) .99 .98 .97 .5 . % .91 £3 .89 .87 .86 .85 .81 .77 .78 Note: Revised capacity Ior ‘Super Heat Steam: ' multiply capacity 01 Vahaex Factor notedabove. Copyri9ht€>21KloPenu't Kumc-0393-us-1412 M319
  20. 20. KUN KLE SAFETY AN D RELIEF PRO DUCTS IEEHNIEAL REFERENEE Valve Sizing Table C - Air and Gas Temperature Correction Factors Turporahn ‘F To: Tonponttlu ‘F T: Tclmorauw ‘F To: Tolmerauw ‘F T: 0 1 .062 90 0.972 260 0.849 440 0.760 10 1 .051 100 0.$4 280 0.888 m 0.752 20 1.041 120 0.947 300 0.828 480 0.744 30 1 .030 140 0&1 320 0.817 5!) 0.737 40 1.020 160 0.916 340 0.806 550 0.718 50 Hit 180 0.82 380 0.7% can 0.701 60 1.000 200 0.888 380 0.787 660 0.685 70 0.991 % 0.874 4(1) 0.778 7|! ) 0.889 80 0.981 240 0.862 420 0.769 750 0.656 For temperatures other than 60°F at vatre inlet. multiply standard SCFM by Tc. Table D - Gas and Liquid Relative Density Correction Factors Spodfle Oflvity 0: Saudi: Brlvw Dc Spodflcflflvlty De Spodflc Gravity 0: 0.07 3.770 0.8) 1.290 1.05 0.975 1.70 0.768 0.3 3.5% 0.5 1.240 1 .10 0.955 1 .80 0.745 0.09 3.333 0.70 1.195 1.15 0.9% 1.90 0.725 0.10 3.1a) 0.5 1.155 1.M 0.913 2.00 0.707 0.20 2.240 0.8) 1.117 1.25 0.895 2.50 0.633 0.30 1 .825 0.5 1.035 1 . $ 0.877 3.1!) 0.577 0.40 1.580 0.9) 1.055 1.40 0.845 3.50 0.535 0.50 1.414 0.6 1.025 1.50 0.817 4.00 0.500 0.55 1.350 1.0) 1.(XX) 1.60 0.791 4.50 0.471 For a specific gravity other than air or water I-1.fl| . multiply CFM or GPM by Dc. page 20 KUKMC-0398»U$1412 copyregmo mm Penn‘:
  21. 21. KU KLE SAFETY AND RELIEF PRODUCTS 3lZ_'H“J L'. ~‘. . 97. in Valve Sizing Gas or Vapor Acetone Acetylene (Ethyne) AH A'n'nonla. Anhydrous Argm Benzene {Benzd or Benzolej Boron Tnfluonde Butadlene-1.3 (DmnylJ Butane-n (Normal Butane] Butylene (143utene) Carbon D-oxlde Carbon D| Sl. “|d& (C. Bnsutludet Carbon Monoxide Carbon Tetrachlcnde Chlorine Chloromethane (Methyl Chloride) Cyclohexane Cyclopropane (TrmethyleneJ Decane-n Dlethylene Glycol (DEG) Dmethyl Ether {Methyl Ether] Do-. vther'n A DO. vther'n E Ethane Ethyl Alcohol (Ethanol) Ethylene (Ethane) Ethylene Gtyool Ethylene Oxide Flucxocarbons. 12. Dnchlorodnlluoromethane 13. Chlorotrxtluoromethane 13131. Bromotrnlluoromethane 22. Chloroddluoromethane 115. Chloropentafluoroethane Gtycerlne (Gtycenn or Gtyoerol) Ilel u"n Ileptane M Molecular Weight 58.08 26.04 28.97 17.03 39.95 78.11 67.82 54.09 58.12 56.11 44.01 76.13 28.01 153.82 70.91 50.49 84.16 42.C8 142.29 106.17 46.07 165.00 147.00 30.07 46.07 28.05 62.07 44.05 120.93 104.47 148.93 86.48 154.48 92.10 4.00 100.21 In Specific Heat Ratlo 1.12 1.26 1.40 1.31 1.67 1.12 1.20 1.12 1.09 1.11 1.29 1.21 1.40 1.11 1.36 1.28 1.09 1.11 1.04 1.07 1.11 1.05 1.00 1.19 1.13 1.24 1.09 1.21 1.14 1.17 1.14 1.18 1.08 1.06 1.67 1.05 C Gas constant 329 343 356 348 3 7 8 329 337 329 326 328 346 33 356 328 353 34 5 326 328 320 323 328 321 3 1 5 33-6 341 326 331 331 324 322 378 321 Ccpyrlght Z) 2004 Pentaur KUKMC-0398-US-1412 page 21
  22. 22. KUNKLE SAFETY AND RELIEF PRODUCTS l*. .'_'l-l‘. ll. ‘.i‘r‘. H l ~? ;l‘. l_': Valve Sizing Gas or Vapor llexane Hydrogen Hydrogen Chloride, Anhydrous Hydrogen Sulfide lsoputane (2-Methylpropane) lsoprene (2-Methyl-1. 3 Butadiene) Isopropyl Alcohol llsqaropanol) Krypton Methane Methyl Alcohol (Methanol) Methylamines. Anhydrous Monomethyla-nine (Methylamne) Dimetlwlamine Trimethylamine Methyl Meroapton (Methanethiol) Naphthalene (Naplhaline) Natural Gas (specific gravity = 0.60) Neon Nitrogen Nitrous Oxide Octane Oxygen Penlane Propadlene (Allene) Propane Propylene (PropeneJ Propylene Oxide Styrene Sullur Dioxide Sulfur l| E(QlllJOf| d£‘ Steam Toluene (Toluol or Methylbenzene) Triethylene Glycol (TEG) Vinyl Chloride Monomer (VCM) Xenon Xylene (p-Xylene) M Molecular Weight $.18 2.02 15.46 34.C0 58.12 68.12 $3.10 83.80 16.04 32.04 31 . C6 45.08 59.11 48.11 128.17 17.40 20.18 28.01 44.01 114.23 32.00 72.15 43.07 44.10 42.08 58.C8 104.15 64.C6 146.05 18.02 92.14 150.18 62.50 131.30 105.17 I: Specific Heat fietlo km 1.41 1.41 LIE 1.10 1.(X) 1.(D 1.71 1.31 1.20 1.02 1.15 1.18 1.20 1.07 1.27 1.64 1.40 1.3) 1.05 1.43 1.07 1.6} 1.13 1.15 1.13 1.07 1.28 1.03 1.31 1.09 1.01 1.19 1.65 1.07 C Gas constant 322 357 357 349 327 326 326 380 3-48 337 31 7 332 335 337 323 344 375 356 347 321 356 323 379 332 323 345 326 348 326 320 376 323 page 22 KUKMIZ-0398US-1412 Copyright D 2004 Pentair
  23. 23. KUNKLE SAFETY AND RELIEF PRODUCTS IEEHNIEAL REFERENCE Valve Sizing Physical Properties 0 Uwuid Spedlc Gravity ‘F ‘C Water I 1 Acetaldenyde 0.fi9 68 20 Acetic Acid 1.61 88 20 Acetone 0.792 68 20 Ammonh. Anhyliaiue 0.3 88 20 Automotive Crankcase and Gear Ole: SAE5W Through SAE 150 0.$-0.94 80 15.8 Beer 1.01 60 15.6 Benzene (Benzd) 030 68 20 Boron Tiitluonde 1.57 -148 -100 Buladiene - 1. 3 0% 68 20 Butane-n (Normal Butane) 0.579 68 20 Butylene llautene) 0.8!) 88 20 Carbon Dioxide 1.03 -4 -20 Carbon Dhdllde (C. Blalide) 1.2’ 88 20 Carbon Tetrachlalde 1.8) 68 20 Chlorhe 1.& 88 20 Chloromethane (Methyl Gilaide) 0&1 68 20 Crude OR: 326 Deg API 0&2 60 15.6 358 Dog API 0.847 80 15.6 40 Deg API 0.825 60 15.6 48 Deg API on 80 15.6 Cyclonarane 0.780 68 20 cyclopropane (ihiethmne) 0&1 ea 20 Decanen 0.731 68 20 Diesel Fuel Gs 0.&-0.95 80 15.6 Diethylene Glycol(DEG) 1.12 68 20 Dhiethyl Etter (Methyl Ether) 0. 68 20 Dowtherm A 0.993 68 20 Dmvlham E 1.lB7 88 20 Ethane 0.336 68 20 Ethyl Alcohol (Ethanol) ON 68 20 Ethylene (Ethane) 0.569 -155 -104 Ethylene flyool 1.115 68 20 Ethylene Oxide 0.901 68 20 Copyn'yn02llNPenu't KUKMC-0398-US-1412 page23
  24. 24. KUNKLE SAFETY AND RELIEF PRODUCTS l: I_'l-l‘. ll. ‘.i‘i‘_ 151’ l%; l‘. l.": Valve Sizing Uquid Fluaocarbons. R12. DlChlDlOdlT1uG0"n€lhE. ll’| €' R13. Chlorotrilluorcmelhane R1381. Bromotrilluoromethane R22. Chlorodilluorcmelhane R115. Chloropentafluawneltane Fuel Oils. Nos. 1, 2. 3. 5 and 6 Gasc’ nes Glycerine (Glycerin or Giyoerol) lleptane llexane Hydrochloric Add Hydrogen Sulfide lsobutane (2»Methylpropane) Isoprene (2-Methyl — 1. 3-Butadiene) lsopropyl Alcohol llsqnropanol) Jet Fuel (average) Kerosene Methyl Alcohol (Methanol) Methylawnes. Anhydrous. hlmomethylamine (Methylzrrme) Dl'T| E1h‘/ lQ'T1lHe Trwethylamine Methyl Mercapton (Methanethiol) Nitric Acid Nitrous Oxide Octane Penlane Propadiene (Allene) Propane Propylene (Propene) Propylene Oxide Styrene Sullut Dioxide Specific Gravity Water - 1 1.34 0.916 1.58 1.21 1.31 0.82-0.95 0.68-0.74 1.26 0.685 0.660 1.64 0.78 0.558 0.682 0.786 0.82 0.78082 0.792 0.663 0.656 0.634 0.870 1.50 1.23 0.703 0.627 0.659 0.501 0.514 0.830 0.908 1.43 .1 4 88888888388888 88883$838388§83$88$3§88§3§ 88888288858888 O>O> . BGGBBBBGBBBGGBBBBB (110) GO) page 20 KUKMIZ-039E«US-1-‘.12 Copyright D 2001. Pentair
  25. 25. KUNKLE SAFETY AND RELIEF PRODUCTS IEEHNIEAL REEERENEE Valve Sizing Physical Properties 0 Liquid Spedllcorevlly ‘F ‘C Water: 1 Sufi: Hexafluoride 1.37 68 20 Sillulc Acid: 95—1(X)% 1.839 68 20 60% 1.50 68 20 20% 1.14 68 20 ‘Ibluene ('l'oli. iol or Methybenzene) 0.868 68 20 Tridhylene Glycol (TEG) 1.126 68 20 Vhyl Chloride Monomer (ICM) 0.m5 -4 -20 Water, from 1.00 68 20 Water. see 1.m 68 20 Xylene (p-Xylene) 0.862 68 20 Sizing - Determining K. and K. .. U'S'Unm Aft he I fR d (1 hef K b (if he hF K on va ue o is etermine , t actor v is o taine rom t grap . actor v R = 1L is applied to correct the "preliminary required discharge area. " If the corrected area ‘I 1' 1/ A exceeds the "chosen standard orifice area. ” the calculations should be repeated using 12 ND‘, the next larger standard orifice size. “ = ‘u"fi—‘ Metric Units to | -.. II| |"""'" = 31.313vLG 09 "V Adllllm-ID“ "1" II| |l| ||| I| lIIII| ||| ||II| ||| ||| . . 0.0 Determining K. II| ||| ||I1Il| ||| ||IIl| ||| ||II| ||| ||| IIIllI’;1III| ||| ||III| ||| ||III| ||| || temperature referred to water - 1.01] at 0'5 V ‘ 7l1°Fl21°C] 1‘ u - Absolute viscosity atthe flowing 0‘ temperature. in centipoises I 0.3 A A - Effective discharge area, in square im: he5[cm2]| fr°m manugacmmris 1o 20 4060100 200 400 1.000 2.000 10.000 20000 100.000 standard orifice areasl VL - Flow rate at the flowing temperature. in US. gpm [m3/hr] V. _ - Flow rate at the flowing temperature. in U. S. gpm [m3/hr] G - Specific gravity of liquid at flowing K, = weeoelty conecion Footer H = Reynolds Nunher U - Viscosity at the flowing temperature. in Saybolt Universal seconds copyiigin om Penuir Kuxiac-om-us-1412 page 25
  26. 26. KUN KLE SAFETY AN D RELIEF PRO DUCTS IEEHNIEAL REFERENEE Conversion Factors Absolute Viscosity (Iimi To Ind Geek-edvdue. multiply “Given” vdue by letter lielmiii polee Centbdee ‘m u’ an-eec H-eec poise — 100 1 0.0a2 eentipoho 0.01 — 0.01 OJXXB72 JL cm_sec 1 100 — 0.0fi2 —"— use 1433 1433 — ftaec Kinematic Viscosity Gym Teflnil desired value. niuttbly "Gwen" value by factor below etch coiiusion E “' RC “C stcke — 100 1 0.001076 oeriisiniio 0.01 — 0.01 1.076 x 105 cm2 57 1 100 — 0.001075 E 9200 92900 9200 — 3% Liquid Flow Conversions elven To fhddeeliwdvalue. Iniiltiply “Given” value by lacterlielnw llhr gpin - 05 mini - Inip barrels/ day nfllht llhl — 0.00440 0.0036m 0.1510 0.0010 (iirasmoui 9!-'1'“ _ (Us gala‘ P“ mum. ) 227.1 0.8327 34.29 0.2271 gpm 2728 1.201 — 41.18 0.2728 (lrrpeiial galms pet rriiwte) baireblday _ ("mum _ 42 [S cams) 6.&4 0.02917 0.02429 0.00002: n'i33/11 1000 4.406 3.666 151.0 — (citic meters per how) mils __ ( mews p. as x 10' 0.02917 0.02429 0.008024 kg/ hr 1 1 1 0.151 1 (kilograms per riouj G 227.1G 2728G G 1000G limit 1 1 1 1 1 (poirids pat hair) 22056 5m.8G m1.5G 14.816 £056 page 21. i<ui<i.1c-iia9ii. usiu2 copyrigm o 200:. Penn‘: 1. Kinematic viscosity it specific gravity: absolute viscosity. Centislcikes it specific gravity = cenlipoise. Sayboll5econd Universal ISSUI x 0.216 x specilii: gravity 2 ceniipoise. G = Specific gravity 0| liquid at its relieving temperature compared to that olwaler at 68'}: [20"C]. where Grant: LIED.
  27. 27. KUNKLE SAFETY AND RELIEF PRODUCTS IECHNIEAL REFERENEE Conversion Factors Gas Flow Conversions flvui To fiid desired value, multiply "Given" value by latter below $694 SGH lbltir [Ila/ hr] [Nnfl/ hr) [Mini/ min] XTT112 — 60 W 1% 1 . &)8 0.0268 sclhi 0 01677 — L L 0 0266 0 (H0447 ' 379.2 86.1 ' ' lb/ hrs or 6.32 379.2 _ 10.17 0.1695 ii/ his M M °-‘$36 M M 13.96 636.1 22.40 03736 "°"‘ T T 2“ * T T M M Nm3lhl~" 0.6216 37.30 W 27) — 0.01667 NrrfiIrrih5 37.30 223 5.901 M 2.676 M 60 — | HlDfllS8XDt'B§Bd ‘nac’tualvolLme. su: .fias cfm lwbicieat perm'nuta)orac’I'n (actual chi) as isoltendoneloroomcrsssurs. vlieioha flowlsdescribed S Inch-Pound Units _ cfm 14.7 + p 520 SCFM'(ag'frn)x 14.7 ’‘ 41301.1 Where: p = gauge pressueot gas orvapor in psig t = ternperatite of gas or vapor in °F displacement or swept volume. theflow Pressure Conversion may tieoonvertecl to sclm as follows (or from flow expressed 'ri iii! /hr to Mnilhr). Metric Units 1.013 + p X 1.013 273 N713/fI’= m’! fr= x 273+‘ Where: p = gaugeuassusofgasoriiapahbag t = temperati. teoigasorvaporin°C Given To lind desired value. miitflply "Gv¢i"v&iie by factor belnvv Ii. Pa P559 ltolcmi ban kPa (kilopascal) — 0.1450 0.0102 0.0100 pug (poi. n!sf| n"’)-3 6.695 — 0.0700 013695 kglcrnfi (n(| a‘| ograITlsIcrn2) 98.07 14.22 — 0.9807 bang 100.00 14.50 1.020 — Area Conversion Given To Ind dedredvalua. multhly "Given" value by Iactu below in1 ft! min! cm! ii? — 0.006944 645.16 6.4516 era! 0.155 1.076 it 10'3 100 — in 144 — 92900 929 mm! 0.CK)155 1.076 x 10'5 — 0.01 Temperature Conversion Degreu Celsius PC] 1 Degrees FahreiIieitI‘Fl c + 273.15 = l((KaMn) (c x 1.511 32 = F(Fahrenmi‘t) F + 459.67 = R(Ftank'Iie) (F - 32) x 0.556 = C (Celsius) Hunt: 1. M : Molecular weightolvapor or gas 2. Volumetric Ilow Ipertime unit ol hour or minute asshovvnl in standard cubic feet per mini. iteat14.7 psia [1.013 bara], 60°F [lb‘'CI. 3. Weight Ilcm in pounds per hour. 6. Weight llmv in kilograms per hour. 5. Volumetric llow lpertirne unit ol hour or minute asshown| at1.013 bara32°F l0°CI. This represents the commercial standard, known as the Normal Temperatureand Pressure INTPI. Ccinversionslrcim one volumetric flow ralelo another ortoweight Ilcm land vice versal may only be done when the volumetric “CM! is expressed in the standard conditions shown above. If 1 lmvsare exprased at temperature or pressure bases thatdiller lrom those listed above. they must first be converted to the standard base. Notes: 1. Also expressed as kp/ cm? and ligl/ (m7. 2. Normal Temperature and Pressure INTPI Conditions are. at sea level, equal to I .013 bara or 1.113 kgIcm7 lkilograrrs force per squarecentirrieter absoli. ile| at a base temperature of 32"F 10°C]. This dillers slightly lrom Metric Standard Conditions IMSCI. which uses 1.013 bara 60'F | l5°CI for the base temperature. 3. Inch Pound Standard Conditions are. at sea level. equal to 14.7 psia lpounds lorce per squareinchabsolutel, rounded uplrornl-1.696 psia. and at a base temperature ol 60°F |16°Cl. comginozoospenua i<ui<i.1c-0:191:-iis-11.12 page27
  28. 28. KUNKLE SAFETY AND RELIEF PRODUCTS llL‘HlllL‘. «‘. l i? ‘lill%illL'%. Installation -rs ~. i page 28 KUKMC-0398-US-I-‘.12 Copyright 0 2004 Pentair Before installing a new safety/ relief vaixc. we recommend that a pipe tap be used to assure clean cut and uniform threads in the vessel opening and to allow for normal hand engagement followed by a half to one turn by wrench. Installthc valve in a vertical position so that discharge piping and code required drains can be properly piped to prevent build up of back pressure and accumulation of foreign material around the valve seat area. Avoid over tightening as this can distort safety/ relief valve seats. One need only remember that as the vessel and valve are heated, the expansion involved will grasp the xalvc more firmly. when installing flange connected valves, use new gaskets and drawthc mounting boils down cvcnly. Do not use the valve outlet or cap as a lever for in stallation. Use only llat jawed wrenches on the flats provided. Avoid excessive “popping” of the safety/ relief valve as over one opening can pro/ idc a means for lcakagc. Safety/ relief valves should be operated only often enough to assure that they are in good working order. Avoid wirc, cable, or chain pulls for attachment to levers that do not allow a vertical pull. The weight of those devices should not be directed tothc safety/ rolicf ialvc. 8. ll]. Avoid having the operating pressure too near the safety/ rclicf valve set pressure. A very minimum differential of 5 psig or if] percent Iwhichcvcr is greatcrl is recommended. An ever greater differential is desirable, when possible, to assure better scat tightness and valve longevity. Salctyfrelicl valves if‘ high temperature hot water and organic lluid service are more susceptible to damage and leakage than safetyvalves for steam. It is recommended that the maximum allowable working pressure of the boiler and the safety/ relicf valve setting be selected substantially higher than the operating pressure. A differential oi3lI| Ll] percent is recommended. . Avoid discharge piping where its weight is carried by the safety/ relief valve. Even though supported separately, changes in temperature alone can cause piping strain. We recommend that drip pan elbows or flexible connections be used wherever possible [see Type A, B. C In stallation, page 29!. Apply a moderate amount of pipe compound to male threads only. leaving the first thread clean. Compound applied to female threads or used to excess can find its way into the valve, causing leakage.
  29. 29. KUNKLE SAFETY AND RELIEF PRODUCTS IHIHNIEAL RHERENEL I nstallation Recommended Discharge Installation Type "A" Installation Pipe Size Riser Supported Overhead Pipe Size Drain to Waste Make Short As Possible Drain to Waste Copyright 0 200!» Penna": KUKMC-0‘393«US«1A12 page 29
  30. 30. KUNKLE SAFETY AND RELIEF PRODUCTS IEEHNIEAL REEERENEE Installation Recommended Discharge Installation Type “B” Installation Pipe Nipple Bushing One Size Larger Than Outlet Hose l 12" min. | Clamps Pipe to Discharge page 30 KUKMC«039&US-1612 Copyright 0 2004 Penn":
  31. 31. KUNKLE SAFETY AND RELIEF PRODUCTS IEEHNIEAE REEERENIIE Installation Recommended Discharge Installation Type "C" Installation Pipe Nipple Bushing One Size Larger Than Outlet Hose l 12" min. | Clamps Pipe to Discharge copyragmezoospeniu KUKMC-0‘. 'l98«US«1M2 pagell
  32. 32. KUNKLE SAFETY AND RELIEF PRODUCTS IEEHNIEAL REFERENEE Maintenance 1. Develop a regular program of visual 3. Do not paint, oil, or otherwise cover any inspection. looking for clogged drains and interior orworking parts of any safety discharge pipe, din build-up in and around valve. Theydo not require any lubrication the valve seat and broken or missing parts. or protective coating to work properly. 2. Test the valve everytwo to six months When safety/ relief vabres require repair, [depending on valves’ age and conditionl service adjustments, or set pressure preferably by raising the system pressure changes, work shall be accomplished by the to the xalves set pressure or operating the manufacturer. or holders of "V. ' ‘UV. ’ and/ or hand lever [see #3 in Operation]. "VR" stamps. II» PENTAIR VALVES a. CONTROLS SSIJJ WAYZATA BLVD # H13. MINNEAPOLIS. MN 55616 WWWPENTAIRCOMNALVES KUNKLE FACILITY PHONE: I~82B-6693711] 0 WWW. KUNKLEVALVE. CDM All Pentair trademarks and logos are owned by Pentair. Inc. All other brand or product namesare trademarks or registered marks ol their respective miners. EECBUSEWE are continuously improving our productsand services. Peniair reserves the right to change specilicalions without prior notice. Penlair is an equal opportunity e mp loyer‘ page 32 kukmcmmusiatz copyrigmo 200:. Penni-

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