Marshall Excelsior Compact Integral Two-Stage Regulator Megr-291 Series - The MEGR-291 two-stage regulators are approved for use in portable applications and outdoor cooking appliances utilizing low pressure. These regulators feature all zinc body construction, high and low 1/8in NPT pressure tap ports, an integral drip lip vent and optional 90 degree vent location. The MEGR-291 series two stage regulator meets RVIA, UL and NFPA test requirements. MEGR-291 Series Specifications: - Type: Two Stage - Max. Inlet Pressure: 250 PSI - Inlet Connection: 1/4in FNPT - Outlet Connection: 3/8in FNPT - Exterior Finish: Raw Zinc / Raw Zinc - Diaphragm: Fabric Reinforced Molded with O-Ring Bonnet / Body Seal - Diaphragm Type: Internal Relief - Spring Loaded Bonnet / Body Material: Die Cast Zinc - Listings: UL LISTED / UL 144 - Mounting Holes: 3-1/2in On Center - Pressure Taps: 1/8in FNPT Plugged - BTU/H LPG @30 PSI - Inlet: 175,000 (BTU/H Capacity @20% Droop). - 51090, 1/4in FNPT Inlet x 3/8in FNPT Outlet, 90D Vent Bulk.