Federal safety filings with the National Highway Traffic Safety Administration (NHTSA) dating from 2021 document coordinated safety recalls covering more than 409,000 dual-stage RV propane regulators, linking defective equipment to unvented propane leaks and vehicle fire hazards. According to NHTSA Part 573 Defect Information Report filings led by component maker Deking Corporation Co. Ltd. under Campaign 21E-081, defective Winntec and WIC Model 6020 regulators can allow high-pressure propane to bypass safety limits and enter camper living spaces.
Major RV manufacturers issued coordinated recalls under NHTSA oversight to replace the equipment, including Grand Design RV (Campaign 21V-393), Jayco, Inc. (21V-425 and 21V-685), Keystone RV Company (21V-427 and 21V-708), Heartland Recreational Vehicles (21V-428), KZ RV (21V-426 and 21V-670), Highland Ridge RV (21V-430 and 21V-686), Starcraft RV (21V-431 and 21V-687), and Airstream (21V-671). Related aftermarket distributor campaigns were also filed by Universal Forest Products Inc. (21E-086) and Enerco Group Inc. (21E-071).
Affected Brands and Travel Trailers
The defect does not apply to every regulator on the market; it centers on Winntec and WIC Model 6020 dual-stage regulators produced between January 1, 2017, and December 31, 2019.
Associated vehicle recalls span model years 2017 through 2022 across several of North America's most common towable brands:
- Grand Design RV: Imagine, Transcend, and Momentum trailers
- Jayco, Inc.: Jay Flight and Eagle models
- Keystone RV Company: Cougar and Montana trailers
- KZ RV: Sportsmen and Durango models
- Airstream: Flying Cloud and Bambi models
- Heartland, Highland Ridge, and Starcraft: Select travel trailer and fifth-wheel models identified in corresponding manufacturer filings
To check equipment on hand, owners can inspect the regulator mounted between the LP cylinders beneath the propane tank cover. Recalled units feature 'Winntec' or 'WIC' branding, 'Model 6020' stamped on the regulator casting, and a date code from 2017 through 2019.
Why the Winntec Model 6020 Fails
Dual-stage regulators drop the high pressure of bottled liquid petroleum (LP) gas down to a low, safe pressure before sending fuel to appliances. Recall filings from Deking Corporation and Jayco reveal a two-part failure mechanism inside affected Winntec units:
- Valve Seat Displacement: The mechanical lock securing the second-stage valve seal is inadequate, allowing the seal to shift out of place.
- Chemical Breakdown from Hoses: Oily plasticizers leached from connected rubber supply hoses migrate into the regulator body, softening and degrading the rubber-like fluoropolymer seals.
When the second-stage seal gives out, high-pressure gas rushes directly to interior appliances, including kitchen stoves, ovens, water heaters, absorption refrigerators, and furnaces. The sudden pressure spike can cause massive burner flames that ignite nearby cabinets and walls. In other cases, the regulator's exterior safety relief valve vents gas continuously into the propane bottle compartment.
Warning Signs and Immediate Owner Precautions
NHTSA documents and manufacturer alerts list four critical warning signs of an active regulator failure:
- A strong sulfur or rotten-egg odor around the trailer tongue or propane bottle enclosure
- Distinct hissing sounds near appliance valves or the regulator's exterior vent
- Cooktop burners producing roaring, unusually tall yellow or orange flames
- Heavy black soot gathering around exterior appliance exhaust vents
If any of these signs appear, owners should immediately turn off the hand valves on all propane tanks, keep interior burners and appliances off, and avoid operating electrical switches until the system is serviced.
Free Dealer Repair and System Testing
Under the National Traffic and Motor Vehicle Safety Act, safety recall repairs are provided at no cost to owners. Authorized dealer technicians must remove the recalled Winntec Model 6020 unit, install an approved replacement regulator, swap supply hoses where specified by the manufacturer, and conduct a manometer pressure test—using a specialized gauge to verify system operating pressure is set correctly to 11 inches of water column.
Owners can verify whether their camper has uncompleted recall work by entering its 17-digit Vehicle Identification Number (VIN) into the NHTSA recall lookup tool at nhtsa.gov or contacting their brand's customer service division.