Pressure Regulator, Series B, Body Material Cast Iron, Inlet Size 1/2 in, Outlet Size 1/2 in, Length 4 1/2 in, Height 6 5/8 in, Application Air, Water, Connection Type NPT, Pressure Adjustment Range 2 to 30 psi, Seal Material NBR, Max. Temp. 180 Degrees F, Max. Pressure 200 psi