Pinch Valve Technology from RF Valve
January 02, 2012
RF Valve’s patented "non stretch" tube is molded like an expansion joint or rolling diaphragm, providing longer service life because it doesn’t stretch the rubber-like traditional straight sleeve designs. The primary reason for sleeve failure on a pinch valve is high-velocity impingement on the rubber while it is being stretched into the closed position.
The tube can be replaced without removing the body from the line and without having to recalibrate the actuator – a big maintenance benefit.
The wear sensor is built into the tube for predictive maintenance, providing early warning of sleeve failure. It fits very well into Plantweb Alerts messaging.
Valves are rated to 600 PSI. Currently, only one other valve is rated to that pressure.
Most conventional pinch valves are not manufactured to standard ASME/ANSI B16.10 face-to-face, DIN or ISO dimensions, therefore NOT interchangeable with standard ball, gate, diaphragm and plug valves of the same ID and standard. RF Valves are much lighter weight because of their shorter face-to-face. In addition, typical conventional designs include an exposed carbon steel shaft, nut, and pinch bar mechanism that can fail in a number of ways causing significant operational and maintenance expenses over time.
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