Marshall Excelsior MEGR-253P 2-Stage Automatic Changeover Regulator | 1/4" Inverted Flare x 3/8" FNPT

When you're running dual propane cylinders, this Marshall Excelsior regulator keeps gas flowing without interruption. Once the primary cylinder empties, it automatically switches over to the reserve tank, so your fridge, furnace, or water heater doesn't skip a beat.

A built-in indicator window turns from green to red when the just-emptied cylinder needs a refill, giving you a quick visual check instead of guessing which tank is low.

• Two-stage automatic changeover design
• 1/4-inch female inverted flare inlet connection
• 3/8-inch FNPT outlet connection
• Green/red indicator shows when a cylinder needs refilling
• Rated up to 250 PSI max inlet pressure
• Meets UL, RVIA, and NFPA requirements

A packaged, ready-to-install replacement for RVs and trailers running a two-cylinder LP setup.