Manual Air Control Valve, Valve Ways and Positions 3-Way/2-Position, Valve Port Size 1/4 in, Connection NPT, Valve Actuator / Return Treadle / Manual, Max. CFM - Valves 26 cfm, Valve Max. Pressure Rating 150 psi, Valve Temp. Range -10 Degrees to 180 Degrees F, Center Position Not Applicable, Normally Open / Normally Closed Normally Closed, Coefficient of Volume 0.7, Body Material Aluminum, Overall Length 8 3/8 in, Overall Height 4 5/8 in, Overall Width 2 3/4 in, Series E