• Pinch Valves

    Pinch valves are the ideal shut-off valves for open-close and control applications for all liquid goods, in particular, all highly viscous, solids containing, powdery, heavily contaminated as well as abrasive or aggressive materials.Compared to other open-close or control type valves, the characteristic properties of the rubber sleeve ensure that any accumulated material flows through again after opening the valve with as few parts as possible come into contact with the medium. The rubber sleeve absorbs the shock of abrasive material where other valves types are often damaged or jammed. The pinch valve is amazingly simple, safe, and durable. They close completely liquid- and gas-tight and in the open position, a completely round, straight flow is achieved.

What is a pinch valve?

The pinch valves are the ideal shut-off valves for open-close and control applications for all liquid goods, in particular all highly viscous, solids containing, powdery, heavily contaminated as well as abrasive or aggressive materials in pipe and equipment construction, filter installations, tank wagon, silo installation and are also very suitable in areas with a potentially explosive atmosphere. The pinch valve is amazingly simple, safe, and durable. They close completely liquid-tight and gas-tight and in the open position a completely round, straight flow is achieved. 

Pinch valves provide the following benefits:

  • Easy maintenance
  • Self-cleaning
  • No dead volume
  • Round straight flow in open position
  • No scaling
  • Minimal turbulence and friction
  • Fast opening & closing time
  • Low energy consumption
  • Low maintenance costs

The pinch valves use compressed air or fluid to open or close the valve. In the open position, the valve has no restrictions and allows a wide range of media to pass through the bore. The flexible internal rubber hose in the valve keeps the media isolated and prevents the risk of contamination. Compared to metallic valves, the characteristic properties of the rubber hose ensure that any accumulated material flows through again after opening the valve with as few parts as possible come into contact with the medium. The rubber hose absorbs the shock of abrasive material where metal valves are often damaged or jammed. 

These valves are cost-effective, reliable and easy to use, making them desirable in a very wide range of industrial applications from A (such as acetate fiber production) to Z (such as in zinc oxide handling). Many applications  within the food and pharmaceutical industry, bulk material and pneumatic transport, both wet and dry. 

What are the possibilities?

Pinch valves are suitable as fittings for ATEX areas because rubber hoses with a conductive inner surface can be used. Typical applications can therefore be found in the entire food industry, from viticulture to bakeries, in animal feed production, in the chemical and pharmaceutical industry, in cement plants, in drinking water, waste water and process water areas, in washing plants, cleaning systems, filter systems.

There are more than 5000 pinch valve variations regarding:

  • Nominal size (DN 6 – DN 800)
  • Connection type (flanged connection, threaded connections according to EN 10226-1 and EN ISO 228-1 (DIN 2999), DIN 11851 and DIN 11864-1 / DIN 11853-1
  • Clamp connections according to DIN 32676 and DIN 11864 -3 / DIN 11853-3, nozzle / weld ends)
  • Housing material (stainless steel, aluminum alloy, aluminum alloy with stainless steel cladding, polypropylene (PP), polyoxymethylene (POM)
  • Rubber hose material in more than 20 material compositions (friction resistant, alkali and acid resistant, according to FDA, with and without fiber reinforcement)

In addition to all standard products, it is possible to produce completely customer-specific. Do you have special wishes? Please, contact us!

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