Richway’s Airpinch valves use compressed air, or fluid, to compress the rubber sleeve inside of the valve body to shut off media flow.
Operating pressures for controlled material vary depending on sleeve elastomer and valve size. They can range from a moderate vacuum (up to 26" Hg) to a maximum of 90 psi when controlling with air.
Regulator is used to set the actuation air pressure
Three-way solenoid controls the regulated air signal going to the valve.
Required actuation pressure is generally 20 to 40 psi greater than media pressure.
A quick exhaust valve not required for operation.
See more here.