Marshall Excelsior MEGR-253 Propane Regulator; Excela-Flo; 1/4 Inch Inverted Flare X 3/8 Inch FPT; Two Stage; 225000 BTU I Stage/ 150000 BTU II Stage; Without Hose; Zinc Powder Coated; Die Cast Zinc; Internal Relief Spring Loaded Diaphragm Type; Vertical Mount Attributes Pressure: Low Pressure RV Approved: Yes Inlet Connection: 1/4 Inch Female Inverted Flare Outlet Connection: 3/8 Inch Female Threads Installation Type: Vertical Outlet Pressure: 11 Inch WC Number Of Stages: 2 BTU Level: 225,000 BTU Material: Die-Cast Zinc With Shut Off Valve: No With Hose: No   Product Description For over 30 years Marshall Excelsior Company has been a progressive manufacturer of top quality and competitively priced LPG and NH3 equipment that is leading the industry in innovation and low emission products. Features & Benefits Automatic Changeover Regulator Automatically Redirects LP Gas Vapor Flow From An Empty Service Cylinder To A Reserve Cylinder, Without Interruption Of Service Meet UL, RVIA And NFPA Requirements Made In The USA Features An Easy To Read Green Indicator Which Changes To Red When The Service Cylinder Needs To Be Refilled Limited 5 Year Warranty