Manual Air Control Valve, Valve Ways and Positions 3-Way/2-Position, Valve Port Size 1/8 in, Connection NPT, Valve Actuator / Return Button / Manual, Max. CFM - Valves 16 cfm, Valve Max. Pressure Rating 150 psi, Valve Temp. Range -10 Degrees to 180 Degrees F, Normally Open / Normally Closed Normally Closed, Coefficient of Volume 0.4, Overall Length 3 11/32 in, Overall Height 1 3/4 in, Overall Width 1 3/4 in, Series 50, Manual Air Control Valve