Watts 0590721 Air Vent 319852-301 this control kit is the

this control kit is the technician's standard for restoring full logic control to commercial boilers and large-scale pool heaters

This permanent split capacitor (PSC) motor identifies as a versatile replacement option

a 22-way disconnect terminal block

Common Questions What causes a solenoid valve to fail to open or close

may be required depending on local codes

Watts 0590721 Air Vent 319852-301 this control kit is theThe Watts 0590721 FV 4M1 1 Air Vent is a high performance 1 inch automatic air vent valve designed for veteran contractors managing commercial and residential hydronic heating systems. Engineered with a rugged brass body construction, this vertical pattern vent facilitates the continuous removal of trapped air from both hot and cold water distribution lines, preventing air lock and system noise. It features a 150 PSI maximum pressure rating and a