Watts AquaLock™ 1-1/4" Cast Iron Push to Connect Air Separator

This 1-1/4" cast iron air separator is used in commercial and residential, hydronic heating applications to separate air from water in the piping system. It consists of a heavy, cast iron body construction with a 1/2" female threaded connection for an expansion tank, and a 1/8" female-threaded connection for a float vent. It provides continuous purging and venting of air in the system when installed with Watts® Model ET expansion tank and Model FV4 float-vent. The maximum pressure is 125 PSI (8.6 bar).