Lock-Out Valve, Air Inlet Size 1 in, Air Inlet Type NPT, Air Outlet Size 1 in, Air Outlet Type NPTF, Maximum Operating Pressure 150 psig, Maximum Operating Temperature 120 Degrees F, Series 40, Body Material Aluminum, Coefficient of Volume Exhaust 14.9, Coefficient of Volume Forward 18.2, Exhaust Port Size 1 in, Exhaust Port Type NPTF, For Use With FRL Assembly, Overall Depth 2 1/2 in, Overall Height 10 9/16 in, Overall Width 4 3/4 in, Standards OSHA