Type VM/VMF Threaded Union Ends
The direct air operated AKO pinch valve is your most
practical solution for ON/OFF flow control of abrasive,
corrosive and fibrous products including granules, powders
and slurries.
The valve consists of a seamless elastomer sleeve enclosed
in the valve body and held in place by two threaded
end sockets.
The enclosed body design eliminates valve stem packings
or seals of conventional valves which can wear out and
leak.
The sleeve consists of a special fabric reinforced
elastomer designed for high spring back elasticity to
assure quick cycling and bubble tight shutoff.
Principle of Operation:
When compressed air or a suitable fluid, at approx.
30 psi above line pressure, is applied to the valve
body the valve can be fully closed, or “pinched
off”, forming a tight seal even on fibrous and
or granular materials.
When the external pressure on the sleeve is released
the sleeve will again snap back to its original fully
open position.
Advantages:
- Free passage of solids in either direction and no
plugging
- Complete shut-off with liquids and suspended solids
- No packing, seals or bearings required
- Light weight, easily maintained
- Negligible pressure drop
- Only one wear part
- Self cleaning
Sizes available:
3/8”, 1/2”, 3/4”, 1”, 1-1/4”,
1-1/2” and 2” End sockets with NPT thread.
Materials of Construction:
| Body: |
- Light weight aluminum
- Stainless steel
- PVC
|
| Sockets: |
- Polyoxymethylene (POM)
- Zinc plated carbon steel
- Stainless steel
|
| Sleeves: |
Available in a variety of materials compatible
with the application, including:
- Natural gum rubber - abrasion resistant
- Natural gum rubber - food grade
- Natural gum rubber - high temperature
- EPDM - standard
- EPDM - food grade
- Viton®
- Silicone
- Nitrile - standard
- Nitrile - food grade, light or dark
- Neoprene®
- Hypalon®
- Butyl
|
Pinch Valve Accessories:
To operate and control the pinch valve a wide assortment
of accessories is available including
- Solenoid air valves
- Pilot air valves
- Quick exhaust valves
- Exhaust mufflers
- Pressure regulators
- Regulator/filter units
- Proportional pressure regulators
Pinch Valve Applications:
- Food
- Water
- Metering
- Chemical
- Agriculture
- PVC pellets
- Pharmaceuticals
- Pneumatic conveying
- Powder painting systems
- Ceramics, glass and plastics
- Power plants and coal slurries
- Cement, lime and aggregate plants
and for any material streams where flowables such
as liquids, pastes, slurries, powders, granules, pigments
and other materials are pumped, blown, pushed, metered
or flow by gravity through pipelines.
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