Saturday, March 16, 2019

Industrial Pinch Valve Operation and Performance


A pinch valve offers a cost-effective and practical solution for controlling the flow of media through a pipe line or any other system. The operating principle of  pinch valves is simple. In the open position, the valve is full bore with no flow restrictions. During 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 up on the sleeve wall. When compressed, any crystallized particles flake-off the sleeve surface. The full bore structure ensures 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 waste water treatment, cements, 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.
Contact Automatic Controls of Virginia for any challenging valve application.
www.acva.com
(804) 752-1000