Manual Air Control Valve, Valve Ways and Positions 4-Way/3-Position, Valve Port Size 3/8 in, Connection NPT, Valve Actuator / Return Foot Treadle / Manual, Max. CFM - Valves 83 cfm, Valve Max. Pressure Rating 150 psi, Valve Temp. Range -10 Degrees to 180 Degrees F, Center Position Closed, Coefficient of Volume 2.3, Body Material Aluminum, Overall Length 9 13/16 in, Overall Height 3 1/2 in, Overall Width 4 in, Series K, Manual Air Control Valve