Description
The Watts F274751 3/4″ Temperature & Pressure Relief Valve 174A 125 FS is used to protect water heaters from excessive pressure and temperature buildup. It is applied in boilers and hot water space heating equipment where controlled pressure release is required to prevent system damage. It operates by using a pressure-sensing mechanism that automatically opens the valve when preset limits are exceeded, discharging water to relieve unsafe conditions, and then reseats itself when normal levels are restored. Operating within HVAC and hydronic heating systems, it connects to tank or boiler outlets to maintain safe operating conditions and protect system components.
