Air Separator, Air Vent Connection Size Not Applicable, Air Vent Connection Type Not Applicable, Air Vent Type Float, Allowable Pressure - Maximum 150 psi, Allowable Temperature - Minimum 25 Degrees F, Application Hydronic Heating and Cooling, Body Material Brass, Configuration In-line, Distance Between Inlet and Outlet Port 4 1/8 in, Expansion Tank Connection Gender Female, Expansion Tank Connection Size 1/2 in, Expansion Tank Connection Type NPT, For Media Water/Glycol