Marshall Excelsior Low Pressure Single Stage Regulator Megr-230 Series. - The MEGR-230 single-stage regulators are approved for use in small portable applications and outdoor cooking appliances ulitizing low pressure. Note: Single-stage regulators are not approved for RV use. Megr-230 Series Specifications: - Type: Single Stage - Orifice Diameter: .059 Dia - BTU Capacity: 140,000 BTU (based on 25 PSI inlet @ 9in W.C. delivery pressure) - Max. Inlet Pressure: 250 PSI - Inlet Connection: 1/4in FNPT - Outlet Connection: 3/8in FNPT - Exterior Finish: Green Wet Coat - Diaphragm: Molded with O-Ring Bonnet / Body Seal - Diaphragm Type: Internal Relief - Spring Loaded - Bonnet / Body Material: Die Cast Aluminum - Listings: UL LISTED / UL 144 - Mounting Holes: 3-1/2in On Center. Single Stage Excela-Flo Low Pressure Regulator. - 51093, 140,000 BTU Excela-Flo 1/4in FNPT Inlet x 3/8in FNPT, Outlet, Packaged.