[Lifetime Warranty] 2-Stage Auto Changeover Dual Propane Regulator
2-stage auto changeover dual propane regulator kit with hoses, mounting bracket, and installation hardware.
Technical diagram of a 2-stage auto changeover dual propane regulator with dimensions and inlet/outlet specifications.
Propane regulator hose with QCC1 connector for 5-40lb tanks and 1/4-inch inverted male flare fitting.
Diagram showing the switchable pointer positions and status indicator colors for a 2-stage auto changeover propane regulator.
18-inch stainless steel braided propane regulator hose with pressure gauge and connector.
Installation guide for 2-stage auto changeover dual propane regulator with hoses and tanks.
3-color glow-in-the-dark dial gauge for 2-stage auto changeover dual propane regulator.
Comparison chart showing quality differences of a 2-stage auto changeover dual propane regulator.
2-stage auto changeover dual propane regulator kit with hoses, mounting bracket, and installation hardware.
Technical diagram of a 2-stage auto changeover dual propane regulator with dimensions and inlet/outlet specifications.
Propane regulator hose with QCC1 connector for 5-40lb tanks and 1/4-inch inverted male flare fitting.
Diagram showing the switchable pointer positions and status indicator colors for a 2-stage auto changeover propane regulator.
18-inch stainless steel braided propane regulator hose with pressure gauge and connector.
Installation guide for 2-stage auto changeover dual propane regulator with hoses and tanks.
3-color glow-in-the-dark dial gauge for 2-stage auto changeover dual propane regulator.
Comparison chart showing quality differences of a 2-stage auto changeover dual propane regulator.
Lifetime Warranty

[Lifetime Warranty] 2-Stage Auto Changeover Dual Propane Regulator

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2-Stage Auto Changeover Dual Propane Regulator

Key Features

  • Automatically switches from the primary cylinder to the reserve cylinder, ensuring an uninterrupted gas supply.
  • Two-stage regulation system provides a consistent and stable gas pressure to appliances.
  • Integrated indicator displays the service status of the primary cylinder.
  • Allows for removal of the empty cylinder for refilling without shutting down the system.
  • Rated for a capacity of up to 190,000 BTU per hour.

Replaces / Cross-Reference Part Numbers

  • Marshall Excelsior: MEGR-253
  • Camco: 59005
  • Cavagna: 924N
  • Fairview: GR-9984
  • AP Products: 024-1002

Compatibility & Fitment

  • Application: Designed for RVs, trailers, and campers equipped with dual propane cylinder systems.
  • Inlet Connections: 1/4 inch SAE inverted female flare.
  • Outlet Connection: 3/8 inch NPT female.
  • Compatible with standard RV propane pigtail hoses.

When to Replace

  • Inconsistent flame, popping sounds, or low pressure at appliances.
  • Appliance burners produce a yellow or sooty flame instead of a steady blue flame.
  • Gas odor or audible hissing is detected at or near the regulator.
  • Regulator fails to automatically switch over from an empty cylinder.
  • Visible cracks, corrosion, or physical damage to the regulator body.

Installation Tips

  • Shut off the gas supply at both propane cylinders before installation.
  • Mount the regulator with the vent facing downward to prevent water and debris accumulation.
  • Use a pipe thread sealant rated for propane gas on NPT threads only; do not use sealant on flare fittings.
  • After installation is complete, perform a leak test on all connections using a soapy water solution.
  • Point the selector handle towards the cylinder designated as the primary supply.
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  • IDEAL REPLACEMENT

    IDEAL REPLACEMENT

    Used to connect two 5-40lb Propane Tanks to the RV/Trailer/Camper's 1/4" inverted male flare
  • PREMIUM MATERIAL

    PREMIUM MATERIAL

    BlueStars Propane Hose is made of strong & durable material, ensuring long-lasting and effective operation
  • Saving Solution

    Saving Solution

    Enjoy worthy savings by using superior yet affordable parts - BlueStars brings DIY solutions to help you deal with any trouble
  • SIMPLE INSTALLATION

    SIMPLE INSTALLATION

    Please make sure the connectors are firmly tightened to ensure safety (Our package already includes a Sealing Tape for you)
VERSATILE USE

VERSATILE USE

Connects easily to 20–100 lb tanks via a POL Fitting and outputs at a steady 11in WC pressure with a 3/8in Female NPT connection. Ideal for many propane appliances, including gas grills, heaters, gas stoves, RVs, portable fire pits, generators, propane fireplaces, hot water heaters, etc. With a high capacity up to 180,000 BTU/hour, it can be applied to high-demand applications.

FAQ

This regulator is designed to maintain a continuous supply of propane to your appliances by automatically switching the draw from an empty service cylinder to a reserve cylinder. The first stage reduces the high tank pressure to an intermediate pressure, and the second stage reduces it to the standard 11 inches of water column required for safe appliance operation.
The indicator on the top of the regulator will change color—typically from green to red—when the primary cylinder is empty and the system has begun drawing from the reserve cylinder. This allows you to safely disconnect the empty tank for refilling without interrupting the gas flow to your equipment.
You likely need a replacement if you experience inconsistent flame height on your appliances, a complete loss of gas pressure despite having full tanks, or if you smell propane near the regulator. Additionally, if the indicator fails to change color or if you notice oil-like residue leaking from the vent, the internal diaphragm has likely failed.
Installation typically requires an adjustable wrench or a pipe wrench and leak-detection solution. The process generally takes 20 to 30 minutes. Ensure the gas supply is turned off at the tanks before beginning, and always test all connections with a leak-detection solution after installation to ensure a proper seal.
The most common cause of failure is the degradation of the internal rubber diaphragm due to exposure to the elements or contaminants in the propane supply. Over time, the diaphragm can become brittle or develop pinhole leaks, which prevents the regulator from maintaining a consistent output pressure.
While the regulator is maintenance-free, you should inspect the vent periodically to ensure it is clear of debris, spider webs, or ice, which can block the diaphragm's movement. Additionally, ensure the regulator is mounted with the vent facing downward to prevent water accumulation.