Check Valve, In Line, Inlet (In.) 3/4 in (F)NPT, Outlet (In.) 3/4 in (F)NPT, Brass, Hold Back Pressure (PSI) 450 psi, Max. Pressure (PSI) 450 psi, Cracking Pressure (PSI) 0.1 psi, Hex Size (In.) 1 3/16 in, Flow Range Free Air (CFM) 0 to 30 cfm, Max....