A D I V I S I O N O F S A L I N A V O R T E X C O R P O R A T I O N
Valves for Dry Bulk Processing
Many people think that selecting a Slide
Gate or diverter for handling dry material
should be a relatively simple process....
With a bit more information…
Purchasing a very expensive valve for a simple
application can be avoided.
Begin with the pre...
Section 1: Valve Selection
Is a Slide Gate, a Diverter Valve, Iris Valve or even a Butterfly
Valve needed to best fulfill ...
Valve /Application Parameters
• What is the Opening or Orifice size? Is it Square or Round?
• Will the Valve be used in a ...
Valve /Application Parameters (continued)
• Will the valve be subject to wash down?
Is the wash down hot water or caustic?...
Material Specific Considerations…
• What is the material to be conveyed?
• Is the material in powder, granular, or pellet ...
Section 2:Actuator Selection
• What is the cycle frequency?
• Will the valve close on material? Standing or Moving Column?...
Types ofActuators
• Air Cylinder
• Air Cylinder with Magnetic Piston
• Electric Actuator
• Explosion Proof Electric Actuat...
Section 3: Standard Modifications
Determine if the manufacturer offers standard modifications
to suit application/material...
Application Specific Factors
• Duty Cycle
• Abrasive Duty
• Corrosion
• Chemical Compatibility
• Particle Size
• Friabilit...
Application / Material Specific Modifications
(-S) 316L STAINLESS STEEL MATERIAL CONTACT
(-MG) MAGNETIC PISTON AIR CYLINDE...
Application / Material Specific Modifications (cont.)
(-SB) SEALED BODY
(-SF1) NICKEL PLATED ALUMINUM AIR CYLINDER
(-SFS) ...
The
Application
Data Sheet
One of the most
useful tools, when
specifying any Valve.
Section 4: Valve Location & Orientation
Determine where the valve is to be installed
and the valve/conveying line orientat...
Above or Below
The position of a Slide Gate or
Diverter Valve in a system helps
determine which accessories may
be require...
Section 5:Accessory Selection
There are four distinct
areas to address when
specifying accessories
for Valves.
• Motion Co...
Positioning Controls
Intermediate positioning is
available via a variety of
methods depending on
specific installation cri...
COMPONENTS & ACCESSORIES
H A N D L I N G T H E W O R L D ’ S D R Y B U L K S O L I D S
COMPONENTS & ACCESSORIES
H A N D L I N G T H E W O R L D ’ S D R Y B U L K S O L I D S
COMPONENTS & ACCESSORIES
H A N D L I N G T H E W O R L D ’ S D R Y B U L K S O L I D S
Control Panels
…and if you need to take Valve control one step further, Vortex can provide
customers with push button cont...
SafetyAccessories
A Vented Ball Valve should always be
installed in front of the air control valve
in order to bring the S...
w w w. v o r t e x v a l v e s . c o m
Questions?
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How to Select the Right Valve for your Application

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How to Select the Right Valve for your Application

  1. 1. A D I V I S I O N O F S A L I N A V O R T E X C O R P O R A T I O N Valves for Dry Bulk Processing
  2. 2. Many people think that selecting a Slide Gate or diverter for handling dry material should be a relatively simple process. They think all that is needed is: • Size of the Opening • Shape of the Opening • Available stack-up height • Matching connections or hole patterns Actually, quite a bit more information is needed, if the right valve, at the right price, is to be selected for an application.
  3. 3. With a bit more information… Purchasing a very expensive valve for a simple application can be avoided. Begin with the premise that each application for a Slide Gate or Diverter has its own unique requirements. What are the factors that determine which Slide Gate or Diverter, and what modifications are needed, to meet the application requirements. Or, buying an inexpensive valve that cannot handle a demanding application can be avoided.
  4. 4. Section 1: Valve Selection Is a Slide Gate, a Diverter Valve, Iris Valve or even a Butterfly Valve needed to best fulfill the application? Installation criteria determines which Valve line is appropriate.
  5. 5. Valve /Application Parameters • What is the Opening or Orifice size? Is it Square or Round? • Will the Valve be used in a Pressure or Gravity Application? • Will the valve be installed indoors or outside? • What is temperature of the air and material conveyed? • Does the system use dilute phase, dense phase, vacuum, or gravity to convey material? • If pressure or vacuum, how much? • What is the size of the conveying line? • Are the lines tube or pipe? • If the lines are pipe, is it schedule 10 or 40? • Carbon steel, stainless steel, or aluminum?
  6. 6. Valve /Application Parameters (continued) • Will the valve be subject to wash down? Is the wash down hot water or caustic? • Will there be flow aids such as aeration or vibration if the valve is mounted below a bin/silo? • what is the sequence of operations for the system. E.g. When are the flow aids activated in relation to the cycle of the gate valve? • If the slide gate is designed for gravity and is mounted below a bin/silo then how is the material conveyed into the bin/silo?
  7. 7. Material Specific Considerations… • What is the material to be conveyed? • Is the material in powder, granular, or pellet form? • What is the particle size of the material? • What is the weight of the material per cubic foot? • Is the material sticky, abrasive, or corrosive? • Is there spoilage or sanitary issues with the material? • Will different types of material be conveyed through the same line? If so, are there cross contamination concerns?
  8. 8. Section 2:Actuator Selection • What is the cycle frequency? • Will the valve close on material? Standing or Moving Column? • Is compressed air available? • Does actuation speed matter? • What are the cost variables for replacement and repair? • Can I use manual actuation when the valve is only for maintenance purposes?
  9. 9. Types ofActuators • Air Cylinder • Air Cylinder with Magnetic Piston • Electric Actuator • Explosion Proof Electric Actuator • Hydraulic Actuator • Manual, Hand Wheel, Hand Crank, & Chain Wheel Actuators
  10. 10. Section 3: Standard Modifications Determine if the manufacturer offers standard modifications to suit application/material specific requirements
  11. 11. Application Specific Factors • Duty Cycle • Abrasive Duty • Corrosion • Chemical Compatibility • Particle Size • Friability • Temperature • Serviceability • Food Specific Application • Indoor/Outdoor Service Standard Modifications: MG, S, HT3, HT4, WS1, SB, P10/40, HS, RS, AD, SR, SF1, CIP, AR, HT6, POT, CC, LL, SL ,MD, GP, OF, …
  12. 12. Application / Material Specific Modifications (-S) 316L STAINLESS STEEL MATERIAL CONTACT (-MG) MAGNETIC PISTON AIR CYLINDER (-WS) WATER WASHDOWN FOR STICKY MATERIALS (-HT3) HIGH TEMPERATURE SERVICE (-HT4) HIGH TEMPERATURE SERVICE (-P) MODIFIED PIPE FLANGE MOUNTING (-AP) ANSI 125 – 150# MOUNTING (-SAN) US DAIRY STANDARD ACCEPTED (-NP) NICKLE PLATED AIR CYLINDER (-GP) GROUND AND POLISHED GATE INTERNALS (-FS) 304 FLEXIBLE STAINLESS FLEX HOSE (-P10) SCHEDULE 10/20 PIPE SIZE (-P40) SCHEDULE 40 PIPE SIZE (-CC) CLEAR BONNET COVERS (-SL) STRAIGHT LINE LEG (-UR) URETHANE SLEEVE (-BN) BUNA “N” SLEEVE (-TF) TEFLON SLEEVE (-FP) OPTIONAL BOLT HOLE PATTERN
  13. 13. Application / Material Specific Modifications (cont.) (-SB) SEALED BODY (-SF1) NICKEL PLATED ALUMINUM AIR CYLINDER (-SFS) 316LSS FRAME AND CONTACT (-SR) STAINLESS STEEL ROLLERS (-OF) TUBE SIZE OFFSET FLANGE 30 OR 45 DEGREES (-RS) SEAL ACCESS/ REMOVABLE SEALS (-AR) ABRASION RESISTANT PLATE BLADE (-CIP) CLEAN IN PLACE (-RT) ROUND TRANSITIONS (-RTP) ROUND TRANSITIONS WITH ANSI PATTERN (-30) 30 DEGREE OFFLEG on outlet of Diverter Valve (-DP) DEAD POCKET DEFLECTOR (-PL) POLYMER LINER ON LEGS (-HL) HONEYCOMB LINER ON LEGS (-HB) HONEYCOMB LINER ON BUCKET Salina Vortex offers a wide range of modifications outside the standard offerings.
  14. 14. The Application Data Sheet One of the most useful tools, when specifying any Valve.
  15. 15. Section 4: Valve Location & Orientation Determine where the valve is to be installed and the valve/conveying line orientation
  16. 16. Above or Below The position of a Slide Gate or Diverter Valve in a system helps determine which accessories may be required for your application Example: If a Slide Gate is to be mounted below a surge hopper, positioning controls may be required to meter material into the weigh hopper
  17. 17. Section 5:Accessory Selection There are four distinct areas to address when specifying accessories for Valves. • Motion Controls • Feedback • Safety Devices • Fabricated Accessories
  18. 18. Positioning Controls Intermediate positioning is available via a variety of methods depending on specific installation criteria • VPO/VPC – Relay control with manual adjustability • AVP – PLC control with manual adjustability • IVP – Infinitely Variable Position Control via 4- 20mA signal
  19. 19. COMPONENTS & ACCESSORIES H A N D L I N G T H E W O R L D ’ S D R Y B U L K S O L I D S
  20. 20. COMPONENTS & ACCESSORIES H A N D L I N G T H E W O R L D ’ S D R Y B U L K S O L I D S
  21. 21. COMPONENTS & ACCESSORIES H A N D L I N G T H E W O R L D ’ S D R Y B U L K S O L I D S
  22. 22. Control Panels …and if you need to take Valve control one step further, Vortex can provide customers with push button control panels to suit your valve control needs. Vortex can also utilize “state of the art” valve/sensor manifold technology with a variety of PLC interfaces on Multi-Port Diverter Assemblies.
  23. 23. SafetyAccessories A Vented Ball Valve should always be installed in front of the air control valve in order to bring the Slide Gate or Diverter Valve to Zero Mechanical State (ZMS) before servicing. Why use a Vented Ball Valve? This style of Ball Valve “bleeds off” any residual downstream pressure contained in the air lines supplying the air cylinder. The Ball Valve should always be installed within 6 feet of the air control. Residual Pressure Vent
  24. 24. w w w. v o r t e x v a l v e s . c o m Questions?

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