Western Enterprises Non-Corrosive Gas Flow Valves, 200 PSIG, Brass, Inert Gas, 5/8 - 18 RH(F), 1/4" $29.16
Western Enterprises Non-Corrosive Gas Flow Valves, 200 PSIG, Brass, Oxygen, 9/16 in - 18 RH(M) $23.67