20 DFU Air Admittance Valve with 1-1/2 in. PVC Adapter

Part #PFAAV6  |  Item #4146461  |  Manufacturer Part #3900519

$ 25.20 EACH


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Product Details

  • An air admittance valve shall be acceptable as a vent termination for any individual vent, common vent, circuit vent, loop vent, island fixture vent, vent stack or stack vent to prevent siphonage of a fixture trap
  • The purpose of an air admittance valve is to provide a method of allowing air to enter the plumbing drainage system without the use of a vent extended to open air and to prevent sewer gases from escaping into the building
  • An air admittance valve is a one-way valve designed to allow air to enter the plumbing drainage system when negative pressures develop in the piping system
  • The device shall close by gravity and seal the vent terminal at zero differential pressure (no flow conditions) and under positive internal pressures
  • Unique technology opens at -0.01 Psi and seals at 0 psi and above
  • Screening on air inlets to guard the seal
  • Protective rubber sleeve provides grip for installation and keeps valve free from debris
  • 100% Functionally tested at 1/4 in H20 and 30 in H20 ensuring trouble-free performance
  • Lifetime limited warranty
  • Made in USA


ASSE Standards: ASSE 1050, ASSE 1051, ASSE 1051-2009

ASTM Specifications: ASTM D-2661, ASTM D-2665

Adaptor Material: PVC

Color Finish: White

Color Finish Category: Whites

DFU: 20

Fits Pipe Size: 1-1/2 in

Fitting Size 1: 1-1/2 in

Fitting Sizes: 1-1/2 in

IAPMO Listed: Yes

Material: Plastic

Material Type: PVC

NSF Certified: Yes

NSF Specifications: NSF 14

WaterSense Labeled: No