The components used for the elimination of air like float, sliding guide zones, spring and mechanism stem are made of stainless steel.

Extra high capacity air vent is ideal for use in large piping systems and can also be installed in horizontal piping. The valve body and cover are made of forged brass while the filter, valve stem, float and spring are all made of stainless steel to prevent the formation of rust.


501 maxcal

Automatic air vent for heating and air conditioning. Brass body and cover, stainless steel internal components. Extra high discharge capacity.

Max. working pressure: 230 psi.

Max. discharge pressure: 90 psi.

Max. discharge rate: 9 SCFM.

Working temperature range: -4 – 250°F.

Inlet 3/4" NPT female; Discharge Top Thread: 3/8" female.


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