Maid O Mist 50 psi Auto Float Automatic Air Valve

The No. 67 Auto-Vent is a hot water float vent for use on convector radiators, baseboard radiation, and radiant panels. 1/8″ auto float vent, up to 50 lb. pressure. 1/8″ I.P. Male connection, 3-3/4″ x 9/16″. These are designed to be used in space that is limited and can be installed in trouble spots previously neglected or improperly vented. Vertical mounting. Bright brass finish.