The Marshall Excelsior by AP Products Excela-Flo 2 Stage Low Capacity Regulator automatically redirects gas flow from an empty cylinder to a reserve cylinder, without interruption of service. This makes it ideal for RVs with one or multiple low BTU appliances, while still allowing for a wide range of output pressure adjustment. The easy-to-read indicator lets you know when the service cylinder needs a refill.

• For RVs with one appliance or low BTU multiple appliance applications while still permitting the maximum range of output pressure adjustment
• Automatically redirects low-pressure gas vapor flow from an empty service cylinder to a reserve cylinder, without interruption of service
• Features easy to read green indicator which changes to red when the service cylinder needs to be refilled
• Max Inlet Pressure: 250 PSI
• Type: Two Stage
• Relief Type: Internal Relief – Spring Loaded
• Listings: LISTED / UL 144
• Primary cylinder BTU/Hr. at 20% drop: 175,000
• Reserve cylinder BTU/Hr. at 20% drop: 100,000
• Note: MEGR-253L set point: 100 PSIG Inlet @ 11” WC outlet Flowing @ 10 SCFH Air
• Dimensions:
  • Inlet Connection: 1/4” Female Inverted Flare
  • Outlet Connection: 3/8” FNPT
  • Mounting Holes: 3-1/2” On Center
  • Pressure Taps: 1/8” FNPT, Plugged