Series VR1210/1200 shuttle valve is a 3 ported valve with one output and 2 pneumatic signal and input ports. Output is always supplied by high pressure inlet. The VR12**F series are interrupters for control of air pressure signal system lines. Piping is possible in any position and the one-touch fittings make piping connections simple. Time delay valve series VR2110 with its combination of adjustable orifice and fixed flow allows transmission of a pneumatic signal after a fixed time period. 3 port check valve Max. operating pressure: 145 psi Ambient and fluid temp: 23 to 140 F Effective area (Cv): 0.38 to 0.81