Manual Air Control Valve, Valve Ways and Positions 3-Way/2-Position, Valve Port Size 1/8 in, Connection NPT, Valve Actuator / Return Button / Spring, Max. CFM - Valves 22.1 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 0.3, Body Material Aluminum, Overall Length 2 1/8 in, Overall Height 1 1/8 in, Overall Width 5/8 in, Series 11, Manual Air Control Valve