Braxton Harris Company Automatic Plumbing Air Admittance Vent (1-1/2″ MPT)
UPC:
Automatic plumbing vent permits air to enter drain line to prevent siphonage. Seal closes as drainage stops to prevent sewer gas from entering home. For use with sinks, tubs showers, washing machines, etc. Needs to be installed with a minimum height of 6″ above the P-trap. Meets NSF-24 specification.