Presented by Vortex Valves

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. 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. 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. 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. 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. 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. 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. 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. 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. Section 3: Standard Modifications
Determine if the manufacturer offers standard modifications
to suit application/material specific requirements

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. 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. 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. The
Application
Data Sheet
One of the most
useful tools, when
specifying any Valve.

15. Section 4: Valve Location & Orientation
Determine where the valve is to be installed
and the valve/conveying line orientation

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. Section 5:Accessory Selection
There are four distinct
areas to address when
specifying accessories
for Valves.
• Motion Controls
• Feedback
• Safety Devices
• Fabricated Accessories

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. 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. 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. 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. 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. 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. w w w. v o r t e x v a l v e s . c o m
Questions?