The manufacturer went bankrupt. The industry took notice.
Components are tested for durability against environmental exposure and the corrosive nature of petroleum vapors.
Today, UL 242 is baked into the U.S. National Electrical Code (NEC) and the International Residential Code (IRC). Every electric water heater you see—from the tiny 2.5-gallon unit under a sink to the 80-gallon tank in a hotel—contains a UL 242-listed thermostat. You can’t buy a non-compliant one from any reputable supplier. ul 242
Without proper venting, the expansion of gases inside a tank (especially during a fire) could lead to an explosive failure.
The standard provides guidelines for:
Vents must be shown to open and close consistently without sticking, even after long periods of inactivity or exposure to debris. Importance in Industrial Safety
To earn a UL 242 certification, venting equipment must undergo rigorous testing to ensure it can withstand the harsh environments of petroleum storage. The manufacturer went bankrupt
Many local fire codes and insurance providers require that all tank components be UL-listed to ensure they meet recognized safety benchmarks. Finding UL 242 Compliant Products