Watts 0556001 Relief Valve preventing the combustion cycle from

preventing the combustion cycle from initiating if venting or induction fails

and PA series heaters

Pneumatic Cover and Faceplate

providing the throughput necessary for mid-sized commercial and residential appliances

Watts 0556001 Relief Valve preventing the combustion cycle fromThe Watts 0556001 (model 100XL 8 150) is a heavy duty 3 4 inch T&P relief valve engineered for critical temperature and pressure protection in water heater and storage tank applications. This unit is the direct lead free successor to the legacy 0066110 model, ensuring compliance with modern potable water standards while maintaining a high discharge capacity of 105,000 BTU hr. It features a durable lead free copper alloy body and a thermo bonded coated