Type VMP-Compact Threaded Socket Ends
Introducing a new generation of direct air operated
pinch valves to meet the growing demand for a compact,
simple and reliable valve for flow control and metering
of all kinds of liquids, slurries, powders and granules.
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| VMP
- compact, black |
VMP
- compact, white |
The valve consists of a seamless elastomer sleeve enclosed
in the valve body and held in place by two threaded,
bolted-on 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
and Socket ends: |
- Polyoxymethylene (POM) black
- Polyoxymethylene (POM) natural white -
for food grade applications;
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| 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 Operating Conditions:
Max. product temperature: 176°F
Max. line pressure: up to 1” - 87 psi; 1-1/4”
to 2” - 65 psi
Max. control pressure: 65 psi
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:
- Filling and weighing systems
- Food and beverage industries
- Syrups, sugar and wine making
- Automated animal feeding plants
- Sewage and waste water treatment
- Ceramics, glass and plastic industries
- Printing and photographic equipment
- Chemical and pharmaceutical industries
- General liquid feed lines and metering
- Water treatment plants with suspended solids in
stream
- Air vent or liquid drain lines and many more, too
numerous to list here
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