Maytag dryer gas valve safety — natural gas and LP conversion — Maytag gas dryers, including the MGD, MGDB, MGDX, and MGDC series, ship from the factory configured for natural gas operation. Homes that use liquid propane (LP) instead of natural gas require a conversion kit to adjust the gas valve orifice size, regulator pressure, and burner air shutter. An improperly installed LP conversion kit — or operating a natural-gas-configured dryer on LP supply without conversion — can result in dangerously high flame temperatures, incomplete combustion, carbon monoxide production, and gas leaks.
Why This Matters
Natural gas and liquid propane operate at different pressures and have different combustion characteristics. Natural gas is delivered at approximately 7 inches of water column (WC) pressure, while LP is delivered at approximately 11 inches WC. LP also contains roughly 2.5 times more energy per cubic foot than natural gas. If a dryer configured for natural gas is connected to an LP supply without converting the orifice, the burner receives too much fuel at too high a pressure, producing an oversized yellow flame that generates excessive carbon monoxide and can overheat the burner housing and surrounding components. Conversely, an improperly sized LP orifice can cause a lean flame that produces erratic ignition, flame rollout, and gas odor from unburned fuel.
Warning Signs
- A yellow or orange flame instead of the normal steady blue flame visible through the lower front access panel — yellow flames indicate incomplete combustion
- A strong gas odor near the dryer during or after operation, even after the burner has cycled off
- Sooting or black residue on the inside of the dryer drum, on clothing, or around the burner assembly area
- The dryer runs excessively hot, scorching or discoloring fabrics, or the exterior of the dryer feels unusually hot to the touch during operation
Recommended Actions
- Verify your gas supply type — natural gas or LP — by checking with your gas utility or looking at the regulator on your gas meter. Never assume the dryer is configured correctly for your supply.
- If LP conversion is needed, use only the Maytag-approved LP conversion kit for your specific model. The kit includes a new orifice, regulator spring, and installation instructions specific to your dryer’s gas valve assembly.
- Have the LP conversion performed by a licensed gas appliance technician or plumber — improper orifice sizing is the most common cause of post-conversion gas leaks and flame problems.
- Never operate a gas dryer with a damaged, kinked, or corroded flexible gas connector. Replace the connector with a new CSA-certified stainless steel flex connector rated for dryer use whenever the dryer is moved or reinstalled.
When to Call a Technician
Contact a licensed gas appliance technician immediately if you smell gas near the dryer, if the burner flame is yellow or unstable, if you see soot on clothing or inside the drum, or if you need to convert your dryer between natural gas and LP operation. Gas valve and orifice work should never be attempted by an unlicensed person — improper gas connections can cause explosions, fires, and carbon monoxide poisoning.