Marshall Excelsior Co. MEGR-253P Two-Stage LP Gas Automatic Changeover Regulator

The Marshall Excelsior MEGR-253P Excela-Flo Automatic Changeover Regulator is designed for RV and outdoor LP gas applications, providing uninterrupted propane service by automatically switching from an empty cylinder to a reserve cylinder. This two-stage regulator features a visual indicator that displays green during normal operation and changes to red when the service cylinder needs refilling, eliminating guesswork and preventing unexpected gas outages.

Key Features:

• Two-stage regulation for consistent gas pressure and flow
• Automatic changeover function switches seamlessly between cylinders
• Color-coded indicator (green = service cylinder active, red = service cylinder empty)
• Maximum inlet pressure: 250 PSI
• Capacity: 225,000 BTU first stage / 150,000 BTU second stage
• Set point: 100 PSIG inlet @ 11" W.C. outlet flowing @ 30 SCFH
• Dual 1/4" female inverted flare inlet connections
• 3/8" FNPT outlet connection
• Die cast zinc body construction with powder coat finish
• Fabric-reinforced molded diaphragm with O-ring bonnet/body seal
• Internal relief, spring-loaded diaphragm design
• Mounting holes: 3-1/2" on center
• Pressure taps: 1/8" FNPT plugged

This regulator meets UL 144, RVIA, and NFPA requirements for safe LP gas system operation. The die cast zinc construction ensures durability in outdoor environments, while the pre-installed mounting screws provide installation convenience. Ideal for recreational vehicles, small cabins, cottages, and other applications requiring dual-cylinder propane systems with automatic failover capability.