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Model #20346

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Redi-Vent 20346 Air Admittance Valve with PVC Adapter, 1-1/2- or 2 in. Connection

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  • Structured for ventilation to prevent loss of water seals
  • High-grade PVC frame is resilient, lightweight, and non-toxic
  • Uniquely designed to protect against vermin
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Product Overview

With its compact design, the Studor Redi-Vent Air Admittance Valve with PVC Adapter offers a simple drain and waste venting solution. Great for venting a single fixture or a group of bathroom fixtures, the Redi-Vent air admittance valve is designed to fit 1-1/2- and 2-inch pipes and excels in tight applications. This one-way valve automatically opens and takes in fresh air when negative pressure (suction) occurs from a fixture discharging into the plumbing system. When the water flow stops, the Redi-Vent closes naturally due to gravity, preventing the circulation of any bad bathroom or drain odors. With a capacity of 20 DFUs (drain fixture units) on a branch, this economical negative pressure valve creates essential ventilation that prevents the loss of water seals in traps, eliminating the need to install expensive and unsightly roof penetrations and vent piping. Designed for residential and commercial use, the Studor Redi-Vent Air Admittance Valve (AAV) can be used in conjunction with other Studor AAVs to complement larger high-rise building drainage systems. The active air valve is designed with an exclusive vermin protection system to keep out insects and foreign objects.
  • Compact air admittance valve with PVC adapter; ideal for a single fixture or group of fixtures up to 20 DFUs (drain fixture units) on a branch
  • Creates ventilation that prevents the loss of water seal in trap
  • Uses gravity to automatically close seal and prevent circulation of unpleasant bathroom or drain odors; exclusive vermin protection system keeps out bugs and foreign objects
  • Fits 1-1/2 in. and 2 in. piping; temperature rating of -40°F to 150°F (-40°C to 65.6°C); complies to ANSI/ASSE 1050 and 1051; this style air admittance valve is not recognized as a mechanical vent in the International Building Code
  • WARNING - This product contains chemicals known to the state of California to cause cancer and reproduction harm.
  • Limited warranty for replacement of defective valves

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Inlet Diameter (In.)
Outlet Diameter (In.)
Product Depth (in.)
Product Height (in.)
Product Length (in.)
Product Width (in.)


Rough-In valve
Compatible Pipe Material
Screw on
Maximum Pressure (psi)
Maximum Working Temperature (F)
Pack Size
Product Weight (lb.)
Valve Type
Air Admittance

Warranty / Certifications

Manufacturer Warranty
1-Year limited warranty

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Customer Reviews

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I just finished up remodeling a client's casita (Guest House) in which we included a sink in thei...
I just finished up remodeling a client's casita (Guest House) in which we included a sink in their new kitchenette. Since adding a new vent to the roof would have been a nightmare, we opted to use the Redi-Vent instead. It worked like a charm, even when draining a full sink. The client mentioned that in their kitchen, the dishwasher, which is in the island with their sink, smelled foul when it ran. Upon inspection, I noticed there was no Redi-Vent type product installed (since it was an island, no vent stack either). So I installed another one under the sink, and presto, foul smells gone. Gotta love it when something as easy as this is to install, makes such a huge difference in a manner of minutes.
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