The ‘EN-Series’ Pinch Valve, available from Rhinoflex Pinch Valves , has a simple design, consisting of two pinch bars that open and close the elastomer sleeve. The field replaceable sleeve is the only wetted part, which is reinforced and fabricated using high quality elastomer materials. This sleeve facilitates smooth operation with no clogging and jamming, and can close tight on solids.
The Rhinoflex ‘P-Series’, pneumatic-hydraulic Pinch Valve, is designed especially for highly abrasive and aggressive applications. The valve comprises of a tailor made re-enforced elastomer sleeve, encased in a high-grade, cast ductile iron body. The elastomer sleeve is the only wetted part; the inside cavity, between the sleeve and the wall of the body, acts as a built-in actuator. Compressed air or hydraulic oil is used to operate the valve as a ‘Control’ valve or ‘On-Off’ service, and the central portion of the sleeve collapses, gas tight even on solid particles. Pressure is released to open the valve. The pneumatic-hydraulic pinch valve is simple, cost effective and versatile.
The ‘Series-22’ Quarter-Turn Pinch Valve is a high flow capacity pinch valve designed for hard-to handle fluids, especially slurries. The valve interior consists of a fabric reinforced elastomeric or PTFE- lined Diaphragm Spool, the only wetted component of the valve; two opposing gear-driven cams, contained in a flanged split vinyl ester-fibreglass body, act on the Diaphragm Spool, providing flow control over the entire 90° of valve stem travel. The valve exhibits negligible pressure drop in the open position and bubble-tight closure even around solids in the closed position. Solids in the slurry make operation of other types of valves such as ball, plug and butterfly valves problematic. The ‘Series-22’ valve is suitable for slurries since there are no ‘dead zones’ in the valve internals.