Watts 0590713 Valve 320788-704 Humming or failure to close

Humming or failure to close often indicates a worn diaphragm or debris in the valve seat

Direct Drop-In Replacement: Specifically replaces the legacy Watts 0274479 model without piping modifications

it maintains full backward compatibility while benefiting from the updated TE-6300 Series design

a thermocouple produces approximately 30mV

avoiding the common vibration issues associated with generic alternatives

Watts 0590713 Valve 320788-704 Humming or failure to closeFor high efficiency hydronic management, the Watts 0590713 Valve (Series HAV) delivers precision air removal across residential and commercial heating circuits. This 1 4" HAV automatic vent valve is engineered to eliminate air pockets in baseboards, convectors, and radiators, preventing the common service calls associated with noisy pipes and poor heat distribution. Featuring a two piece chromed brass body, the unit integrates a moisture retaining