Product Info Catalog HVAC Heaters Propane Propane 2-Stage Regulator Propane 2-Stage Regulator Request a Quote UPC: 89301738638 Manufacturer: Mr Heater Corp SKU: 142877 Model Number: F273863 Propane 2 Stage Regulator, Excess Flow Soft Nose Fitting Inlet x 3/8" Female Pipe Thread Outlet, Use With Propane Fueled Indoor/Outdoor Appliances, 160,000 BTU Maximum Flow.