What does a pinch valve do?
A pinch valve is a 2/2-way valve designed to shut-off or control the flow of corrosive, abrasive or granular media. It utilizes pressurized air 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.
What is a pneumatic pinch valve?
Clippard’s NPP Series 2-Way pneumatic pinch valves are air-piloted devices designed to open or close tubes for controlling flow of liquids and gases. Pinch valves have no areas or dead volume where fluid can become trapped. Only the inside of the tubing has contact with the fluid.
What is pinch tube?
Precision pinch tube valves for the controlled dispensing of most fluids and adhesives. Fluid is fed under pressure to the polyethylene tube inside the valve. Pinch valves are ideal for dispensing most low to medium viscosity fluids. Using disposable pinch tubes eliminates the need for maintenance and cleaning.
Can you throttle a pinch valve?
Considered as one of the simplest designs, the pinch valve has a soft elastomer liner. It is pinched to close using fluid pressure. Throttling capabilities of the pinch valve is usually between 10% to 95% flow rate capacity.
How does a pinch valve stop flow?
Pinch valves are similar to diaphragm valves, in pinch valves, the body is provided with sleeves, which get squeezed to control or stop the flow. These valves shut off the flow by pinching and sealing off a synthetic or natural rubber tube.
What do pinch valves and diaphragm valves have in common?
Diaphragm valves are comparable with pinch valves in terms of their function and design. Both have a soft seal rubber element fitted in the valve housing that performs the main task of stopping the flow of media.
What does pinch valve mean?
A pinch valve is a full bore or fully ported type of control valve which uses a pinching effect to obstruct fluid flow.
What does a miniature pinch valve do?
Miniature Proportional Pinch Valve Design The MPPV series allows physical separation between the valve from corrosive or high purity process fluids, while providing the incremental flow control offered in a conventional proportional valve.
Pneumatic Pinch Valves. Designed for biopharmaceutical processing, food and beverage, and industrial applications where sterility and wash down procedures are needed, these robust units offer reliability and performance. Each model is designed for disposable tubing and contains an easy snap-in tube slot for quick loading and unloading procedures.