Vacuum/Pressure Rlf 1 NPT 0 to 20 psi

Vacuum / Pressure Relief Valve Valve Inlet Port 1 in NPT Preset Setting (PSI) 0 to 14.7 Valve Vacuum Range 0 to 30 in Hg Max CFM - Valves 40 cfm Max Temp 250 Degrees F Operational Pressure Range 0 to 20 psi Brass Body Material Brass Piston with O-Ring Seal Poppet Nitrile Seal Material Stainless Steel Spring Material Hex (In.) 1 5/8 in Length (In.) 5 1/4 in Easily Convert from Vacuum to Pressure Relief by Reversing Poppet and Spring - Includes - Rated CFM @ Set Pressure -