L710A-750 Series Extra heavy-duty Acetylene Line Regulator offers 2 - 15 PSIG delivery range. Regulator with 3/4" 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 3/4" NPT F inlet ports. It has neoprene diaphragm with maximum 350 PSIG inlet pressure that is not suitable for use on cylinders. Victor offers high performance products for non-cylinder applications such as automated cutting, bulk gas system delivery and other pipeline applications where high flow maintaining consistent pressure is critical. WARNING: Not for Use On Cylinders.