Victor® L 700 Series Extra Heavy-Duty Air/Oxygen/Inert Gas/CO2/N20 Line Regulator offers 4 - 80 psig delivery range. Regulator with 1/2" NPT F inlet and outlet ports has stem type seat mechanism for magnificent durability. 2 1/2" Forged brass body regulator has housing cap with Delrin cap bushing to provide smooth adjustments. It is ideally designed for use with gas distribution system that comes with either 1/2" NPT F or 3/4" NPT F inlet ports. It has 3 1/4" neoprene diaphragm with maximum 350 psig inlet pressure that is not suitable for use on cylinders.