- One size approved to handle up to 3 inch vent pipe
- Opens/closes as needed by building s plumbing system
- 1-way valve that permits air to enter when negative pressures develop in the piping system
- Closes by gravity to seal the vent terminal at zero differential pressure
Air Admittance Valve, Constructions: PVC, 1 1/2 inch dia. Valve Inlet, 2 inch dia. Valve Outlet Size, Standards: ASSE 1050 and 1051, ICC ESR-1664, NSF Standard 14, IAPMO - Classified Mark, ASTM D 2665/D 2661, For Use With: PEX Pipes
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Material Of Constructions: PVC
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Size: 1 1/2 inch dia. Valve Inlet, 2 inch dia. Valve Outlet
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For Use With: PEX Pipes
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Capacity: 20 DFU
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Standards: ASSE 1050 and 1051, ICC ESR-1664, NSF Standard 14, IAPMO - Classified Mark, ASTM D 2665/D 2661
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Applications: For Use as a Secondary Vent