Watts 0858541|WW0858541 - 1 1/4 AS-B-T

This 1 1/4 IN bronze air separator is used in commercial and residential, hydronic heating applications to separate air from water in the piping system. It consists of a bronze body construction with threaded connection, tapings for a boiler-fill expansion tank, a 1/2 IN FV4-M1 float vent, and a 1/2 IN brass pipe plug. It provides continuous purging and venting of air in the system when installed with Watts Series FV4-M1 float vent. Horizontal mount only. It is ideal for use in radiant heat systems. Maximum pressure is 125 psi (8.6 bar).