PROFLO PFAAV20A PFAAV2A 1-1/2 in. 20 dfu Plastic Air Vent, White

This air admittance valve is made of plastic and comes in white. It fits 1-1/2 inches pipe size and has rated 20 DFU for venting DWV of 2 inches and smaller. The valve has unique technology that opens at -0.01 PSI and seals at 0 PSI and above. It has screened-on air inlets to guard the seal with a protective rubber sleeve that provides a grip for installation and keeps the valve free of debris. The valve has 100 percent functionally tested at 1/4 inch H2O and 30 inches H2O ensuring trouble-free performance. It is ASSE 1050/ASSE 1051, ASTM D-2661/ASTM D-2665 and NSF 14 certified.