This orifice is compatible with several Reznor F-series and UDX models requiring a 1

the internal disc has likely failed and requires replacement

If your application requires navigating bends or averaging temperatures across a wide cross-section

the motor will hum and trip the internal overload

Watts 0124180 Valve This orifice is compatible withThe Watts 0124180 Valve is a 3 4" temperature and pressure relief valve designed for critical protection in water heater and hot water storage tank applications. This 100XL 3 75 model is engineered to handle systems up to 100,000 BTU hr (CSA rated) and features a standard 75 PSI pressure relief setting with a 210F maximum temperature threshold. For technicians cross referencing legacy hardware, the 0124180 is identical to 0066080, the 100XL 3 75, and