Never cut the capillary

Which legacy models does the 21-933-1 cover replace

Compatible with a wide range of Fenwal series gas ignition controls and commercial combustion systems

Rugged Industrial Design: Optimized for use in mixing tube housings within high-velocity airstreams

it remains fully compatible with standard immersion wells for temperature limit control and Thermal Targeting energy-saving logic

Watts 0382456 Relief Valve Els PW 17895 Never cut the capillaryThe Watts 0382456, also identified as the Series 740 high capacity water relief valve, is a dedicated safety component for large hot water heating boilers and heat storage tanks. This specific 740 3 4 75 model features a 3 4 inch NPT threaded inlet and outlet, factory set to discharge at 75 PSI. With a discharge capacity of 1,886,000 BTU hr, this valve provides critical overpressure protection by utilizing a large orifice and a high lift disc design.