Description
The new MEGR-253HP Excela-Flo Propane Regulator by Marshall Excelsior Company is a high-capacity two-stage automatic changeover regulator engineered for RV and mobile LP gas systems requiring superior flow performance.
Product Details
- Designed for dual-cylinder RV setups, this regulator automatically switches propane supply from the empty service cylinder to the full reserve cylinder—ensuring uninterrupted gas flow to appliances. A clear green-to-red indicator provides an easy visual cue when the primary cylinder requires refilling.
- With a first-stage capacity of 350,000 BTU and second-stage capacity of 200,000 BTU, this regulator delivers stable, consistent 11" WC outlet pressure under fluctuating demand conditions.
- Built from die-cast zinc with a zinc powder-coated finish, and featuring an internal spring-loaded relief diaphragm, this vertical-mount regulator is constructed for durability, corrosion resistance, and long-term reliability in outdoor RV environments.
- Also referenced under updated part number MERG-253HP.
Key Specifications
- Manufacturer: Marshall Excelsior
- Manufacturer Part Number (MPN): MEGR-253HP
- Alternate Number: MERG-253HP
- Series: Excela-Flo
- Condition: New
- Pressure Type: Low Pressure
- RV Approved: Yes
- Installation Type: Vertical mount
- Number of Stages: Two-stage automatic changeover
- First Stage Capacity: 350,000 BTU
- Second Stage Capacity: 200,000 BTU
- Outlet Pressure: 11" Water Column (WC)
- Inlet Connection: 1/4" Female Inverted Flare
- Outlet Connection: 3/8" Female NPT
- Material: Die-cast zinc
- Finish: Zinc powder-coated
- Relief Type: Internal spring-loaded diaphragm
- With Shut-Off Valve: No
- With Hose: No
- Packaging: Plastic clamshell retail packaging
- Compliance: UL, RVIA, NFPA
- Warranty: Limited 5-Year Manufacturer Warranty
Features & Benefits
- Automatic changeover maintains uninterrupted propane supply
- High-capacity performance for larger RV systems
- Two-stage regulation ensures stable and consistent gas pressure
- Easy-to-read green/red indicator for cylinder status
- Internal relief mechanism for added safety
- Durable zinc die-cast body with corrosion-resistant finish
- Meets UL, RVIA, and NFPA standards
- Made in the USA
Applications
Ideal For
- Travel trailers
- Fifth wheels
- Motorhomes
- Toy haulers
- RVs with multiple propane appliances
- High-demand LP systems
Installation Notes
- Designed for vertical mounting only
- Ensure vent orientation faces downward
- Verify fitting compatibility before installation
- Perform a leak test after installation
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