Watts 0556001 Relief Valve and 310 series units

and 310 series units

This extension is rated for use in applications generally requiring up to 6 Nm of torque

000 BTU individual appliance loads and 150

Common Questions What happens if I use the wrong orifice size

Identical Utility: Replaces 4074EGR/U with 100% mechanical consistency for rapid field replacement

Watts 0556001 Relief Valve and 310 series unitsThe 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