Specification Sheet

FERGUSON.COM/PROFLO
Specifications
Product Features
· 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" H20 and 30" H20 ensuring
trouble-free performance
Model Numbers
SKU Description DFU Rating Adapter
PFAAV20A
160 BR/24 STK AAV
1.5-2 ABS ADPT
160 Branch,
24 Stack
1-1/2"–2"
PFAAV20
160 BR/72 STK AAV
1.5-2 PVC ADPT
160 Branch,
72 Stack
1-1/2"–2"
General Specifications
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.
Product Location Specifications
· Should be located a minimum of 4" above the weir of fixture trap for
single fixture and branch venting and 6" above flood level of highest
fixture for stack venting
· Each valve should be installed in an accessible location
Warranty
This PROFLO product carries a standard 1-year limited warranty
©2021 Ferguson Enterprises, LLC 1121 3429203
PFAAV20
Air Admittance Valves
PFAAV20