A pinch valve offers a cost-effective and practical solution for controlling the flow of media through a pipeline or any other system. The operating principle of pinch valves is simple. In the open position, the valve is a full bore with no flow restrictions. During the closing, two pinch bars squeeze the valve sleeve shut on the centerline. The sleeve is naturally wear-resistant and when particles hit the sleeve’s rubber surface, the energy is absorbed and released when the rubber bounces back.
Pinch valves are controlled through linear motion via a manual screw mechanism, or linear pneumatic or electric actuator.
Heavy-duty pinch valves provide bubble-tight shut-off even if solids have built upon the sleeve wall. When compressed, any crystallized particles flake-off the sleeve surface. The full bore structure ensures the free flow of the medium. The construction and materials of the three main components (sleeve, body, and actuator) can be tailored to suit your process conditions.
Pinch valves have gained increased popularity in a wide variety of industries such as wastewater treatment, cement, mining, food and beverage, medical, pharmaceuticals, others, primarily because they offer tight shut-off, full bore flow, and pressurized self-cleaning from the movement of the flowing media.
Benefits of pinch valves:
- Long service intervals.
- Only one wearing part.
- Excellent for slurries, dry powders, and abrasive materials.
- Low maintenance cost