How to control the pneumatic pinch valve with 3 way solenoid valve

Connection guidence for air operated pinch valve with 2/3 way solenoid valve

Solenoid valve P is the inlet, A is the outlet, and R is exhuast.

Quick exhaust valve, P is the inlet, A is the outlet, R is the  exhuast

This connection is to keep the pneumatic pinch valve normally closed

The valve opening speed is related to the elasticity of the hose and the exhaust speed in the valve cavity.

 A quick exhaust valve can be selected to increase the valve opening speed.