Automatic Plumbing Air Admittance Vent (1-1/2" MPT) Automatic plumbing vent permits air to enter drain line to prevent siphonage. Seal closes as drainage stops to prevent sewer gas from entering...
1 1/2″ Gas Regulator Vent Square Vent Design Features: Non-Corrosive Aluminum Construction 16” x 16”, .0018 Gauge ScreenScreen Designed to Blow-Out in Reliefif the Screen becomes Blocked Circular...