Pressure Reducing ValveChina Ar N2 He Cylinder Gas Regulator with Pressure Gauges Harris Type Model 801-10 0-200psi 0-16bar 0-4000psi 0-300bar W23-14 W22-14 M12*1.0 M16*1.5 All Brass, Find details about China Reducer, Pressure Reducer from Ar N2 He Cylinder Gas Regulator with Pressure Gauges Harris Type Model 801-10 0-200psi 0-16bar 0-4000psi 0-300bar W23-14 W22-14 M12*1.0 M16*1.5 All Brass