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
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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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