Manual Air Control Valve, Valve Ways and Positions 3-Way/2-Position, Valve Port Size 10-32 UNF, Connection NPT, Valve Actuator / Return Button / Spring, Max. CFM - Valves 20 cfm, Valve Max. Pressure Rating 125 psi, Valve Temp. Range -20 Degrees to 160 Degrees F, Center Position Closed, Normally Open / Normally Closed Normally Closed, Coefficient of Volume 0.2, Body Material 303 Stainless Steel, Overall Length 1 3/4 in, Overall Height 5/8 in, Overall Width 1/2 in, Series 300