MARSHALL EXCELSIOR 2 Stage End Vent Regulator 1/4in FPT x 3/8in FPT.
The first stage features a lever arm that improves both the efficiency and regulation. Combined with the second stage regulator, the overall performance assures even smoother and more continuous flow of gas to all appliances. Has an excess flow P.O.L. installed. When mounted horizontally, its vent is pointing down. When mounted under a protective cover it is approved for use on single vertical cylinders or horizontal tanks. Specifications; zinc die cast, molded rubber diaphragms, fabric reinforced first stage diaphragm, 2nd relief mechanism per UL. 144, mounting holes 3-1/2" on center, 90,000 BTU capacity, inlet: 1/4", outlet 3/8"FPT inlet x 3/8" FPT outlet. 5-3/4"L, 3-1/8"W, 2-5/8"H.