Watts 0556006 Valve 321042-401 always check the manufacturer’s technical

always check the manufacturer’s technical data for multi-frequency applications

Key Benefits: Precise Thermal Calibration: Engineered with a fixed 26open 38close setting for accurate high-limit protection

ensuring you have the right leverage for a safe swap without additional tool requirements

Key Benefits Precision Engineering: Specifically calibrated for Lochinvar Knight XL 800

With an 11 3/4" outside diameter

Watts 0556006 Valve 321042-401 always check the manufacturer’s technicalFor high capacity commercial water heating systems, the Watts 0556006 Temperature and Pressure Relief Valve (Series 40XL) is the industry standard for fail safe protection. Designed for 1 inch NPT connections, this ASME rated T&P valve features a 1,481,000 BTU hr discharge capacity and is factory set for 100 psi relief pressure. The 4 inch extension thermostat is engineered with a specialized thermo bonded coating that effectively retards mineral