This document is MSS Standard Practice SP-85 from 1994 regarding cast iron globe and angle valves with flanged and threaded ends. It provides standards for the design, materials, pressure-temperature ratings, testing and marking of such valves. The standard covers valve types and classes up to size 12 inches and pressure ratings up to 500 psi for Class 125 valves and 250 psi for Class 250 valves, depending on temperature. It specifies requirements for materials, dimensions, testing and other standards to ensure proper design and functionality of the valves.

1. I S S SP-85 94 W 5770640 0500320 529 W
S T A N D A R D P R A C T I C E SP-85
1994
Edition
CAST IRON
Globe 81 Angle Valves
FLANGED AND THREADED ENDS
Developed and Approved
by the
Manufacturers Standardization Society
of the
Valve and Fittings Industry, Inc.
127 Park Street, N.E.
Vienna, Virginia 221 80
O Originally Approved 1976
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2. MSS
An MSS Standard Practice is intended as a basis for common practice by the
manufacturer, the user, and the general public. The existence of an MSS
Standard Practice does not in itself preclude the manufacture, sale, or use of
products not conforming to the Standard Practice. Mandatory conformance is
established only by reference in a code, specification, sales contract, or public
law, as applicable.
U.S. customary units in this SP are the standard; the metric units are for
reference only.
Conversions between inch and metric dimensions and between psi and bar
pressure units in this standard practice are not exact. It is recognized that this
rounding of dimensions will create an apparentc onflict in acceptance dimensions
or gaging between the different units of measurement. In all such cases it is the
intent of this standardp ractice that anym easurement which is within tolerance by
either measurement system listed is considered to be conformance herewith.
I Substantive changes in this 1994 edition are “flagged” by parallel bars as
shown on the margins of this paragraph. The specific detail of the change
may be determined by comparing the material flagged with that in the
previous edition.
Any part of this standard may be quoted. Credit lines should read ‘Extracted
from MSS SP-85, 1994, with permission of the publisher, the Manufacturers
Standardizaiton Society.’ Reproduction prohibited under copyright convention
unless written permission is granted by the Manufacturers Standardization
Society of the Valve and Fittings Industry, Inc.
Copyright G, 1985 by
Manufacturers Standardization Society
of the
Valve and Fittings Industry, Inc.
Printed in U.S.A.
1
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3. 7
MSS SP-85 74 5770640 0500322 3TL
MSS STANDARD PRACTICE SP-85
~~ ~~
CONTENTS
i SECTION PAGE
L
1 .
2 .
3 .
4
I 5 .
6 .
7 .
8 .
9 .
CONTENTS ................................................................ ii
SCOPE ..................................................................... 1
VALVE DESIGNATION. CLASSES AND SIZES ................................ 1
PRESSURE-TEMPERATURE RATINGS ...................................... 1
MATERIALS ............................................................... 2
DESIGN ................................................................... 2
WORKMANSHIP ........................................................... 3
TESTS ..................................................................... 3
MARKING ................................................................. 4
PAINTING ................................................................. 4
TABLE 1 .PRE SSURE-TEMPERATURE RATINGS NON-SHOCK .psi , .................. 1
TABLE 2 .HY DROSTATIC SHELL TEST PRESSURE. ................................... 4
TABLE 3 .DU RATION OF TESTS ..................................................... 4
TABLE B1 .PRE SSURE-TEMPERATURE RATINGS NON-SHOCK. bar ................... 7
FIGURE 1 .TY PE I .GLO BE, METAL-TO-METALS EATS ............................... 5
FIGURE 2 .TYP E II .AN GLE, METAL-TO-METAL SEATS .............................. 5
FIGURE 3 .TY PE III .GL OBE, COMPOSITION-TO-METAL SEATS ....................... 6
FIGURE 4 .TYP E IV .AN GLE, COMPOSITION-TO-METAL SEATS ....................... 6
ANNEX A .VA LVE TYPES .FIG URES ..................., ............................. 5
ANNEX B .PRE SSURE-TEMPERATURE RATINGS NON-SHOCK .bar ............, ...... 7
ANNEX C .REF ERENCED DOCUMENTS ..................................... , ......... 8
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4. MSS
MSS SP-85 9Y 5770b40 0500323 238
STANDARD PRACTICE SP-85
1. SCOPE
1 .I This standard practice covers cast iron
globe and angle valves with flanged and threaded
ends.
1.2 These valves are suitable within the sizes
and pressure-temperature ratings specified
herein for general purpose service.
I .3 This standard practice also includes, direct-ly
or by reference, stipulations in chemical and
physical properties of materials, and on dimen-sions
of end connections in common use.
3.
2. VALVE DESIGNATIONS, CLASSES
AND SIZES
2.1 Type I (Figure 1) Globe, Metal-to-
Metal Seats
Type II (Figure 2) Angle, Metal-to-
Metal Seats
Type III (Figure 3) Globe,
Composition-to-Metal Seats
Type IV (Figure 4), Angle,
Composition-to-Metal Seats
Note: The valve sketches, Figures 1 through 4 in
Annex A are for the purposeo f illustration and
nomenclature only. They do not represent any
manufacturer’s product.
2.2 Construction
Designations GT - Globe, Threaded End
GF - Globe, Flanged End
AT - Angle, Threaded End
AF - Angle, Flanged End
2.3 Trims
a) All Bronze
b) All Iron
c) Bronze with Ferrous Stem
d) Composition Disc
2.4 Classes
125
250
2.5 Nomnial Pipe Sizes
a) 2 through 12, Flanged End
b) 2 through 6, Threaded End
PRESSURE-TEMPERATURE RATINGS
3.1 Pressure-temperature ratings for the vari-ous
classes of valves are shown in Table 1. Metric
units (bar) are shown in Table B1 in Annex B.
The ratings specified are for valves with metal-to-
metal seating surfaces. Pressure-temperature
ratings for valves with non-metallic seat ma-terials
must be limited to reflect the physical
characteristics of these materials at each tem-perature,
and may be lower, but in no case
higher than values shown in Tables 1 and B1.
i
TABLE 1. PRESSURE-TEMPERATURE
RATINGS, NON-SHOCK - psi
Class Class
Temperature
Degrees F 125 250
-20 to 150
200 500
200 190 460
225 180 4n0
I75 250 415
275 170 395
300 165 375
325
155 355
335 I50 350
375 145 315
400 140 290
425 130 270
450 125 250
3.2 The temperature shown for the correspond-ing
rating shall be the metal temperature of the
pressure retaining parts. It shablel assumed that
the metal temperature will be the temperature
of the contained fluid. Use of a pressure rating
at a metal temperature other than that of the
contained fluid shall be the responsibility of the
user.
1
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5. MSS SP-85 94 5770640 0500324 I174
t.
d
MSSP RACTICE STANDARD
4. MATERIALS
4.1 General. This Standard Practice is intended
to cover minimum physical and chemical re-quirements.
Materials of superior properties
may be substituted. Users are cautioned against
applications with fluids which may react chemi-cally
with any materials used in these valves.
Consultation with the manufacturer is advised
to determine suitability in cases of doubt.
4.2 Cast Iron. Gray Iron shall be in accord-ance
with ASTM A126, Class B.
4.3 Seating Material. Metal-to-metal surfaces
shall be brass or bronze for bronze mounted
valves; cast iron or other ferrousm aterial for all
iron valves. Composition or resilient facing
material shall be rubber (Synthetic or Natural),
or suitable polymer. Other seating materials,
either metal of composition, suitable for the
intended service may be furnished when agreed
between purchaser and manufacturer.
4.4 Stems. Stem material shall be brass or
bronze, either cast or wrought, for bronze
mounted and composition disc valves, wrought
steel for all iron valves.
4.5 Handwheels. Handwheels may be gray
iron, ductile iron, malleable iron or steel at the
manufacturer’s option.
4.6 Castings. All castings shall be clean and
sound, without defects which will impair their
service. No plugging, impregnation, welding or
repairing of such defects will be allowed.
4.7 Bolting. Bolts and studs connecting pres-sure
containing parts shall develop physical
strengths not less than requirements of ASTM
I A307. I
4.8 Glands. Glands shall be made from brass,
bronze, cast iron or other ferrous materials.
5. DESIGN
5.1 General. When under the test pressure
specified in Paragraph 7, the design of all valves
shall be sucahs top rovide againsta ny permanent
distortion of the body, bonnet or seats. Valve
stems shall be designed to prevent permanent
distortion when valve is operated at full rating
working pressure.
5.2 End Flanges
5.2.1 End flanges shall be integral with the
valve body. Dimensions, tolerances and drilling
shall be ina ccordance with ASME BI1. for each
respective pressure class. The flanges shall be
fully machined on the gasket face in accordance
with MSS SP-6.
5.2.2 Face-to-face dimensions of flanged end
valves shall’ be in accordance with ASME
B16.10.
5.3 Threaded Ends. Threaded end bodies may
have hexagon, octagon or round ends with
ribs. Pipe ends shall be threaded with tapered
pipe threads in accordance with ANSI/ ASME
B1.20.1.
5.4 Body-Bonnet Bolting
5.4.1 Dimensions of bolts and cap screws shall
be in accordance with ANSI B18.2.1.; nut di-mensions
in accordance with ASME/ ANSI
B18.2.2
5.4.2 Nuts shall be threaded in accordance with
ASME B1.1, Coarse thread series, Class 2B.
5.4.3 Bolts, studs or cap screws shall be threaded
in accordance with ASME B 1.1, Coarse thread
series, Class 2A.
5.5 Disc Guides. Discs and disc holders for
valves size 4 and larger shall be guidedt o ensure
that the seating surfaces of the disc and body
seat are properly aligned at the point of closure.
2
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6. MSS SP-85 94 5770b40 0500325 O00
MSS STANDARD PRACTICE SP-85
5.6 Seating Surfaces
5.6.1 Disc seating surfaces may be integral or
may be separate rings securely fastened to the
disc.
5.6.2 Body seats shall be separate rings,
threaded into the body either shoulder or bot-tom
seated, except that all iron valve seats may
be integral with the body casting at the manu-facturer’s
option.
5.7 Glands
5.7.1 Glands may be threaded or bolted type.
5.7.2 Bolted glands may be solid, solid-bushed,
or two piece self-aligning design. Use of open
bolt slots in glands shall not be permitted unless
hinge bolts are used.
5.7.3 Stem seals not requiring a gland but
suitable for the service conditions, may be
furnished.
5.8 Gland Bolting. Studs, stud bolts, hinge
bolts or headed bolts through drilled or slotted
holes in the stuffing box flange may be used. In
all cases gland bolting shall be securely held in
place and shall provide adequate adjustment
for progressive compression of packing material.
5.9 Backseat. Valves shall be designed to have
a backseat. Repacking undepr ressure is hazard-ous
and is not recommended.
5.10 Discs and Disc Holder. Disc or disc
holders shall be securely attached to the end of
the stems in a manner that permits the disc to
swivel relative to the stem.
5. I 1 Stems. The upper ends of stems shall be
threaded with single or multiple Acme type or
60 degree thread approximating the stub form.
5.12 Handwheels. Handwheels shall be of the
spoke type only. Webbed or disc type are not
permitted. Handwheels shall be marked with
the direction of movement for opening of the
valve. On large size valves to be used at or near
maximum rated pressures, the manufacturer
should be consulted regarding the use of aux-iliary
operating means.
5.13 Bypass and Drain Connections. When
specified, bypass and drain connections shall be
in accordance with MSS SP45.
WORKMANSHIP
Valve parts shall be designed and manufacturing
tolerances set so as to provide interchangeability
in the product of any one manufacturebr etween
units of the same size, class, type and design,
except the individual fit of the disc to seat ring
seating surfaces of Type I and II valves.
TESTS
7.1 General. Pressure tests shall be made on I all completed valves prior to shipment by the I
manufacturer.
7.2 Shell Test. Valves in the partially open
position with both ends closed shall be subjected
to hydrostatic or gas test pressure specified in
Table 2. No visible leakage is permitted through
the pressure boundary walls or body-bonnet
joint. Leakage through the stem packing or
stem seals shall not be cause for rejection. Test
pressure shall be held for periods specified in
Table 3.
I I
Caution: Safety precautions must be taken
when gas is used.
3
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7. MSS SP-85 74 5770640 0500326 T47
MSS STANDARD PRACTICE SP-85
TABLE 2. HYDROSTATIC SHELL TEST PRESSURE
English Units
Metric Units
Max. Service Max. Service Shell Test
Class Shell Test
Rating Pressure Rating Pressure
psi psi bar bar
125 200 350 13.8 24.1
500 250 875 34.5 60.3
7.3 Hydrostatic Seat Test. Valves shall be
subjected to a hydrostatic seat test pressure at
not less than the maximum service pressure for
which the valve is rated. The test pressure shall
be applied under the closed disc and the oppo-site
side checked for leakage. The maximum
permissible leakage rate shall be 10 millilitres
per hour, per inch of nominal valve size. Test
pressure shall be held for periods specified in
Table 3.
7.4 Gas Seat Test. At the manufacturer’s op-tion
a gas seat test of not less than 80 psi (5.5
bar) may be used in lieu of Hydrostatic Seat
Test (7.3). This gas pressure is to be applied as
specified for hydrostatic seat test. The maximum
permissible leakage rate shall be I / 10th of a
standard cubic foot (3 litres) of gas per hour,
per inch of diameter of nominal valve size. Test
pressure shall be held for periods specified in
Table 3.
4
I TABLE 3. DURATION OF TESTS I
Shell Test, Seat Test,
Seconds Seconds
10-12
Caution: Safety precautions must be taken
when gas is used.
8. MARKING
Marking shall conform to MSS SP-25.
9. PAINTING
The painting of finished valves shall be optional
with the manufacturer unless otherwise specified.
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8. MSS
PISS SP-85 94 5770640 0500327 783
STANDARD PRACTICE SP-85
ANNEX A
c
Type I - Globe, Metal-to-Metal Seats
FIGURE 1
1 - Body
2 - Bonnet Gasket
3 - Bonnet Stud
4 - Bonnet Stud Nut
5 - Disc
8 - Disc Nut
9 - Handwheel
10 - Handwheel Nut
Type 11 - Angle, Metal-to-Metal Seats
TYPE I AND II FIGURE 2
Part Names
11 - Packing or Stem Seals
12 - Gland
13 - Gland Flange
16 - Backseat Bushing (Manufacturers Option)
17 - Seat Ring
18 - Stem
19 - Bonnet
20 - Stem Nut
5
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9. MSS
MSS SP-85 94 H 5770640 0500328 8LT H
STANDARD PRACTICE SP-85
ANNEX A
Type III - Globe, Composition-to-Metal Seats
L
FIGURE 3
1 - Body
2 - Bonnet Gasket
3 - Bonnet Stud
4 - Bonnet Stud Nut
5 - Disc
6 - Disc Holder
7 - Disc Holder Nut
8 - Disc Nut
9 - Handwheel
10 - Handwheel Nut
Type IV - Angle, Composition-to-Metal Seats
I
TYPE III AND IV FIGURE 4
Part Names
11 - Packing or Stem Seals
12 - Gland
13 - Gland Flange
16 - Backseat Bushing (Manufacturers Option)
17 - Seat Ring
18 - Stem
19 - Bonnet
20 - Stem Nut
6
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10. MSS
MSS SP-B5 94 m 5770640 0500327 756
STANDARD PRACTICE SP-95
TABLE BI. PRESSURE-TEMPERATURE RATINGS
NON-SHOCK - bar
Temperature
Degrees C
-29 to 65
100
125
150
175
200
225
232
Class 125
13.8
12.8
11.9
11.2
10.4
9.6
8.8
8.6
Class 250
34.5
30.9
28.3
25.7
23.1
20.5
17.9
17.2
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11. MSS
MSS SP-85 94 5770640 0500330 478
STANDARD PRACTICE SP-85
e
I,
I ANNEX C I
REFERENCED DOCUMENTS
This annexis an integral parto f this Standard Practicweh ich is placed after the
main text for convenience.
List of standards and specifications referenced in this Standard Practice show
the year of approval.
ANSI B18.2.1-1992 Square and Hex Bolts and Screws, Including Askew Head Bolts, Hex Cap
Screws, and Lag Screws
ANSI/ ASME B1.20.1-1992 Pipe Threads, General Purpose (Inch)
ASME Bl.l-1989 Unified Inch Screw Threads
(UN and UNR Thread Form)
ASME B16.10-1992 Face-to-Face and End-to-End Dimensions of Valves
ASME/ ANSI B16.1-1989 Cast Iron Pipe Flanges and Flanged Fittings (Class 25, 125,250, and 800)
ASME/ ANSI B18.2.2-1993 Square and Hex Nuts
ASTM A 126-93 Specification for Gray Iron Castings for Valves, Flanges, and Pipe Fittings
ASTM A307-93A Specification for Carbon Steel Bolts and Studs, 60,OOO psi Tensile Strength
MSS SP-6-1990 Standard Finishes for Contact Faces of Pipe Flanges and Connecting-End
Flanges of Valves and Fittings
MSS SP-25-1993 Standard Marking System for Valves, Fittings, Flanges, and Unions
MSS SP-45-1992 Bypass and Drain Connections
Publications of the following organizations appear on the above list.
ASME The American Society of Mechanical Engineers
345 East 47th Street, New York, New York 10017
ASTM American Society for Testing and Material
1916 Race Street, Philadelphia, Pennsylvania 19103
MSS Manufacturers Standardization Society of the Valve and Fittings Industry, Inc.
127 Park Street, N.E., Vienna, Virginia 22180
Publications appearingabovew hich have beeanp proved asA merican National Standardsm ay be obtained from:
ANSI American National Standards Institute
11 West 42nd Street, New York, New York 10036
8
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12. MSS SP-85 94 5770bYO 0500331 304
LIST OF MSS STANDARD PRACTICES
NUMBER
SP- 6-1990
SP- 9-1992
SP-25-1993
SP-42-1990
SP-43-1991
SP-44-1991
SP-45-1992
SP-51-1991
SP-53-1985 (R 1990)
SP-54-1985 (R 1990)
SP-55-1985 (R 1990)
SP-58-1993
SP-60-1991
SP-61-1992
SP-65-1990
SP-67-1990
SP-68-1988
SP-69-1991
SP-70-1990
SP-71-1990
SP-72-1992
SP-73-1991
SP-75-1993
SP-77-1984 (R 1990)
SP-78-1987 (R 1992)
SP-79-1992
SP-80-1987
SP-81-1981 (R 1986,91)
SP-82-1992
SP-83-1987
SP-84-1990
SP-85-1994
SP-86-1987 (R 1992)
SP-87-1991
SP-88-1993
SP-89-1991
SP-90-1986 (R 1991)
SP-91-1992
SP-92-1987 (R 1992)
SP-93-1987 (R 1992)
SP-94-1992
SP-95-1986 (R 1991)
SP-96-1991
SP-97-1987
SP-98-1992
SP-99-1989
SP-100-1988
SP-1 O1 -1 989
SP-102-1989
SP-103-1990
SP-104-1990
SP-105-1990
SP-106-1990
SP-107-1991
SP-108-1991
SP-109-1991
SP-110-1992
SP-111-1992
SP-112-1993
Standard Finishes for Contact Faces of Pipe Flanges and Connecting-End Flanges of Valves and Fittings
Spot Facing for Bronze, Iron and Steel Flanges
Standard Marking System for Valves, Fittings, Flanges and Unions
Class 150 Corrosion Resistant Gate, Globe, Angle and Check Valves with Flanged and Butt Weld Ends
Wrought Stainless Steel Butt-welding Fittings
Steel Pipe Line Flanges
Bypass and Drain Connections
Class 150 LW Corrosion Resistant Cast Flanges and Flanged Fittings
Quality Standard for Steel Castings and Forgings for Valves, Flanges, and Fittings and Other Piping
Components - Magnetic Particle Examination Method
Quality Standard for Steel Castings for Valves, Flanges, and Fittings and Other Piping Components-
3
Quality Standard for Steel Castings for Valves, Flanges and Fittings and Other Piping Components -
Visual Method 1
Pipe Hangers and Supports - Materials, Design and Manufacture
Connecting Flange Joint Between Tapping Sleeves and Tapping Valves
Pressure Testing of Steel Valves
High Pressure Chemical Industry Flanges and Threaded Stubs for Use with Lens Gaskets
Butterfly Valves
High Pressure-Offset Seat Butterfly Valves
Pipe Hangers and Supports - Selection and Application
Cast Iron Gate Valves, Flanged and Threaded Ends
Cast Iron Swing Check Valves, Flanged and Threaded Ends
Ball Valves with Flanged or Butt-welding Ends for General Service
Brazing Joints for Wrought and Cast Copper Alloy Solder Joint Pressure Fittings
Specifications for High Test Wrought Butt Welding Fittings
Guidelines for Pipe Support Contractual Relationships
Cast Iron Plug Valves, Flanged and Threaded Ends
Socket-Welding Reducer Inserts
Bronze Gate, Globe, Angle and Check Valves
Stainless Steel, Bonnetless, Flanged Knife Gate Valves
Valve Pressure Testing Methods
Steel Pipe Unions, Socket-Welding and Threaded
Valves - Socket-Welding and Threaded Ends
Cast Iron Globe 84 Angle Valves, Flanged and Threaded Ends
Guidelines for Metric Data in Standards for Valves, Flanges, Fittings and Actuators
Factory-Made Butt-welding Fittings for Class I Nuclear Piping Applications
Diaphragm Type Valves
Pipe Hangers and Supports - Fabrication and Installation Practices
Guidelines on Terminology forP ipe Hangers and Supports
Guidelines for Manual Operationo f Valves
MSS Valve User Guide
Quality Standard for Steel Castings and Forgings for Valves, Flanges, and Fittings and Other Piping
Components - Liquid Penetrant Examination Method
Quality Standard for Ferritic and Martensitic Steel Castings for Valves, Flanges, and Fittings and Other
Piping Components - Ultrasonic Examination Method
Swage(d) Nipples and Bull Plugs
Guidelines on Terminology for Valves and Fittings
Forged Carbon Steel Branch Outlet Fittings - Socket Welding, Threaded and Buttwelding Ends
Protective Epoxy Coatings for the Interior of Valves and Hydrants
Instrument Valves
Qualification Requirements for Elastomer Diaphragms for Nuclear Service Diaphragm Type Valves
Part-Turn Valve Actuator Attachment - Flange and Driving Component Dimensions and Performance
Characteristics
Multi-Turn Valve Actuator Attachment - Flange and Driving Component Dimensions and Performance
Characteristics
Wrought Copper and Copper Alloy Insert Fittings for Polybutylene Systems
Wrought Copper LW Solder Joint Pressure Fittings
Instrument Valves for Code Applications
Cast Copper Alloy Flanges and Flanged Fittings, Class 125, 150 and 300
Transition Union Fittings for Joining Metal and Plastic Products
Resilient Seated-Eccentric Cast Iron Plug Valves
Welded Fabricated Copper Solder Joint Pressure Fittings
Ball Valves Threaded, Socket-Welding, Solder Joint, Grooved and Flared Ends
Gray-Iron and Ductile-Iron Tapping Sleeves
Quality Standard for Evaluation of Cast Surface Finishes - Visual and Tactile Method. ThiSs P must be
sold with a 10-surfac, three-dimensional Cast Surface Comparator, which is a necessary part of the
SP-113-1994
Standard. Additional comparators may be sold separately.
Connecting Joint between Joint Tapping Machines and Tapping Valves
R-Year - Indicates year standard reaffirmed without substantive change. Prices available upon request.
A large number 01 former MSS Practices have been approved by the ANSI or ANSI Standards, published by others. In order to maintain a single source of authoritative
information, the MSS withdraws its Standard Practices in such cases.
O
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127 PARK 22180
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