Watts 0121325 Valve 320788-704 Verify the 24V supply to

Verify the 24V supply to the module and ensure the burner is properly grounded

Always verify your bearing bore and old shaft length with a micrometer before ordering to ensure it fits the existing blower housing

which is essential for maintaining suction pressure stability and system efficiency during low-load conditions

ensuring accurate thermal response

Check the engagement between the hopper nut and the motor gear

Watts 0121325 Valve 320788-704 Verify the 24V supply toThe Watts 0121325 (Model 1XL 4 150) is a professional grade 1 2 inch T&P relief valve engineered for critical temperature and pressure protection in water heater and storage tank applications. This ASME rated safety valve is designed to manage thermal expansion and prevent over pressurization in systems with a maximum heat input of 15,000 BTU hr. Featuring a 4 inch extension thermostat with a specialized thermo bonded coating, the 1XL 4 ensures