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Sure-Vent 1-1/2 in. PVC Air Admittance Valve with 20 DFU Branch and 8 DFU Stack

$2193
  • Air admittance valve design can hold up to pressure changes
  • Heavy-duty PVC frame is resilient, lightweight, and non-toxic
  • AAV vent prevents sewer gases from escaping into a building
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Product Overview

Oatey Fast Set Open Closet Flange Product

Oatey Sure-Vent Air Admittance Valves

By eliminating the need for a branch vent, Oatey Sure-Vent Air Admittance Valves (AAVs) provide the ideal venting solution for island sinks, remote bathroom groups and remodel jobs. Sensitivity to pressure changes, combined with its ability to consistently open and close, is what distinguishes the Oatey Sure-Vent AAV from all others.

Why Use a Sure-Vent Air Admittance Valve?

Ensures Proper Drainage

Every fixture needs a trap and every trap needs a vent. To prevent sewer gases from being released in a home, a trap is required. A vent keeps the sewer and atmospheric pressures equalized allowing water to drain freely.

Eliminates Secondary Vent Pipes

Sure-Vent AAV's provide the ideal venting solution for island sinks, remote bathroom groups and remodeling jobs by eliminating the need to be connected directly into the stack vent.

More Economical

Sure-Vent AAV's are more economical than installing vent pipes in new construction because they reduce the added need for materials and labor.

Unmatched Performance

Zero Pressure

At zero pressure the Sure-Vent AAV is sealed, ready to react to pressure changes. The Sure-Vent AAV will not allow sewer gas to enter the structure.

Negative Pressure

When water is turned on, a pressure change of -0.01 psi (-0.25" H2O) will cause the Sure-Vent AAV to open, allowing airflow from the room through the protective screening, past the seal and into the DWV system as the arrows indicate. When the water is turned off and pressure equalized, the Sure-Vent AAV returns to the closed zero pressure position.

Positive Pressure

The Sure-Vent AAV seals at 0 psi and above indefinitely. The figure shows the Sure-Vent AAV in a sealed position blocking sewer gasses. When pressure subsides, the Sure-Vent AAV returns to the zero pressure position.
Oatey Brand Logo

Oatey products have earned the trust of plumbing professionals for over 100 years.

Since 1916, Oatey has provided reliable, high-quality products for the residential and commercial plumbing industries, with a commitment to delivering quality, building trust and improving lives. Today, Oatey operates a comprehensive manufacturing and distribution network to supply thousands of products for professional builders, contractors, engineers and do-it-yourself consumers around the world.
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 a building. An Air Admittance Valve is a 1-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.
  • For use as a secondary vent
  • Complies to ASSE standard 1050 and 1051
  • 1-size approved to handle up to 2 in. vent pipe
  • Offers unmatched breathing capability with a unique sealing system
  • Closes by gravity
  • Limited warranty

Additional Resources

From the Manufacturer

Compare Similar Air Admittance Valves

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Top RatedSure-Vent 1-1/2 in. PVC Air Admittance Valve with 20 DFU Branch and 8 DFU Stack
1-1/2 in. PVC Backwater Valve for Drainage SystemsSure-Vent 1-1/2 in. PVC Air Admittance Valve with 20 DFU Branch and 8 DFU Stack (2-Pack)2 in. PVC Backwater Valve for Drainage Systems
BrandOateyJONES STEPHENSOateyJONES STEPHENS
NameSure-Vent 1-1/2 in. PVC Air Admittance Valve with 20 DFU Branch and 8 DFU Stack1-1/2 in. PVC Backwater Valve for Drainage SystemsSure-Vent 1-1/2 in. PVC Air Admittance Valve with 20 DFU Branch and 8 DFU Stack (2-Pack)2 in. PVC Backwater Valve for Drainage Systems
Price
$2193
$3410
$4168
$4703
Ratings
(174)
(1)
(169)
(0)
ConnectionMale Pipe ThreadSolventMale Pipe ThreadSolvent
Compatible Pipe MaterialPVCPVCPVCPVC
MaterialPVCPVCPVCPVC
Valve TypeAir AdmittanceBackflow PreventionAir AdmittanceBackflow Prevention
ApplicationNon-Potable WaterNon-Potable WaterNon-Potable WaterNon-Potable Water
Outlet Diameter (In.)1-1/21-1/21-1/22
View ProductView ProductView ProductView Product

Specifications

Dimensions

Inlet Diameter (In.)1-1/2Outlet Diameter (In.)1-1/2
Product Depth (in.)2.5Product Height (in.)3.5
Product Length (in.)2.5Product Width (in.)2.5

Details

ApplicationNon-Potable WaterCompatible Pipe MaterialPVC
ConnectionMale Pipe ThreadFeaturesSelf-Sealing
Indoor/OutdoorIndoorMaterialPVC
Maximum Pressure (psi)15Maximum Working Temperature (F)150
Pack Size1Product Weight (lb.).5
Returnable90-DayValve TypeAir Admittance

Warranty / Certifications

Manufacturer Warranty1 year

Questions & Answers

38Questions
caret
Q:My toilet dies not have a air vent to flush fully/properly. I disconnected the sink drain after the trap and then it flushed perfect. Can I install this in that sink drain line and my toilet will flush correctly?
by|Jul 5, 2022
1 Answer
Answer This Question

A:  Depending on how the system is piped will determine if an AAV would work or not. It can be used for that application though.

by|Jul 6, 2022
    caret
    Q:Does this meet the NSF 14-2009 standard (required by Oregon Statewide Alternate Method No. 07-01)?
    by|Jun 18, 2022
    1 Answer
    Answer This Question

    A:  Our AAV's meet NSF standard 14. whether our AAV's are approved in your area or not would be determined by the local municipality. Please contact technical@oatey.com for a copy of the product submittal.

    by|Jun 20, 2022
      caret
      Q:I replaced a garbage disposal in a single drain sink, and the dishwster has its own drain. Sink drains slow now. Will a Sure-Vent fix it?
      by|Apr 14, 2022
      1 Answer
      Answer This Question

      A:  Possibly, though I'd first do a bit of pipe cleaning. I found that having used a disposal over years allowed slimy sediment to build on the pupe walls. The disposal pushed the water through, but wwithout it, the buildup slowed the drain. HD carries good drain gunk dissolvers. I'd try them first for a week or so.

      by|Jun 24, 2022
        1 found this answer helpful
        caret
        Q:Will an AVV work with a RV or similar where the black water will sit until it has been dumped? I am concerned that pressure might build up over time and cause a rupture or leak. thanks
        by|Mar 28, 2022
        4 Answers
        Answer This Question

        A:  If there is no main vent on the system at all an AAV will not work properly. Also positive pressure build up will cause the AAV to remain shut.

        by|Mar 29, 2022

          A:  This device only allows air to be drawn into a tank or plumbing system. It doesn’t relieve pressure. Best bet is to talk to your RV retailer for the best solution 

          by|Mar 30, 2022

            A:  I'm not sure if this is the proper device for your application, but it should function fine as a vent over your tank without building up pressure as it sits normally in a passive position. Even though it functions very well in the presence of liquid, it takes a fair amount of inch/pounds of air pressure to make it close. If you try to breath through one, you'll see what I mean. Truth be told, this actually doesn't close very well for sewer gas only, but as you move the RV around (especially on a warm day) the gases may become more pronounced. If installing it doesn't require any modification to your plumbing, I'd try it out. If modification is necessary, I might suggest checking with an RV specialist in your area to see if they offer something specific to your application.

            by|Mar 30, 2022

              A:  My AAVs are under the sinks in my 5th wheel. I see this one is the replacement they call for.. I would think this should work. The white part is the AAV the manufacture suggests for replacement

              by|Aug 16, 2022

                Customer Reviews

                • 4.6
                  out of 174 reviews
                • 93%recommend this product
                Filter by:
                Showing 1-10 of 174 reviews
                Great product
                [This review was collected as part of a promotion.] I was looking for something that would help eliminate the foul smell coming from the drain. The drain previously had drained slowly and a lot of backup was created. This was easy to install and works awesome. No more foul smell and the drain now works effectively.
                by
                  • Recommended
                  Works great
                  [This review was collected as part of a promotion.] Been dealing with an old vent and all the slow drains and smells and back ups Decided to try this and to my relief it is just what we needed. No more flow drain, no more back ups, and no smells. Thank you
                  by
                    • Recommended
                    Excellent solution for an unvented sink
                    My kitchen sink was unvented when I bought this house so was making a gurgle sound that was really irritating me. It looked like somebody capped off the vent under the sink years ago and now it looks like you would almost need a blow torch to get it off. Rather than spending hundreds on a plumber to come out I decided to put this AAV in myself. I looked up YouTube on these devices and seemed like a lot of people had confidence in Oatey. This worked perfect for my needs and my sink now no longer has that annoying gurgle sound. I liked that it even provided the adapter which I did not realize until I was in the store. I thought I would have to buy an adapter separately. I know that these devices are not up to code for Illinois (and a lot of other states), but in reality these are a very easy solution to get your sink vented without needing to pay a big plumber bill. And this is coming from a guy that works on a computer all day and has limited to DIY skills.
                    by
                      • Recommended
                      2 found this review helpful
                      EASY TO INSTALL AND WORKS GREAT
                      EASY TO INSTALL AND WORKS GREAT
                      by
                      • Verified Purchase
                      • Recommended
                      It seems a lot of people have had good luck with this product, but I didn't . I bought it because...
                      It seems a lot of people have had good luck with this product, but I didn't . I bought it because we bought a deeper sink in our 18 year old house so I had to lower the plumbing which meant cutting the existing pvc and bypassing it so I also bypassed the vent so the sink would gurgle when the upstairs washing machine went through the rinse cycle. I bought the vent and installed it per instructions but that didn't help. I was going to buy another vent and install it in the horizontal pvc pipe in the basement, but instead, just put a t back into the old pipe that I originally cut so I could utilize the existing vent. Hindsight is 20/20, but I should have done that first.
                      by
                      • DIY
                      • Verified Purchase
                      4 found this review helpful
                      Need a quick secondary vent for your waste line, Oatey has what you are looking for in a Air Admi...
                      Need a quick secondary vent for your waste line, Oatey has what you are looking for in a Air Admittance Valve Model # 39230 Internet #205395535 Store SKU #1000127574 Oatey 1-1/2 in. PVC 6 DFU Air Admittance Valve I moved the sink in our kitchen to another wall and needed to have a vent pipe but didn't want to cut a hole through the roof and wall. The best way was to vent the line by using an Air Admittance Valve. All I had to do was, cut the drain pipe between the P-trap and the wall, install a TEE and run the Air Admittance Valve out the top. Now what should you look for in a good Air Admittance Valve: (1) It needs to allow air to enter the plumbing drainage system when water flows down the pipe and must close and seal the vent when there is no flow conditions. (2) The top should screw off for easy replacement or to allow easy access when cleaning out a clogged pipe. See photo IMPORTANT FACTS For use as a secondary vent Complies to ASSE standard 1050 and 1051 1-size approved to handle up to 2 in. vent pipe
                      by
                      • Recommended
                      3 found this review helpful
                      This Oatey Sure-Vent PVC Air Admittance valve is handy for when you don’t want to spend the time ...
                      This Oatey Sure-Vent PVC Air Admittance valve is handy for when you don’t want to spend the time and money running a vent all the way through the roof. What this valve is designed to do is to allow fresh air as the fixture drains. After draining, the valve seals up to prevent foul air from exiting the drain pipes. Great for situations where your adding a drain and need venting for it. This valve is designed to be used as a secondary vent. You still should have a traditional primary vent. Great for bathroom additions, wet bars, island sinks, tubs, toilet, just be sure to follow the instructions to get an idea where to install this valve. This product is something I really like, and if your rehabbing a home, using these is a nice way of taking out the clutter of rooftop vents sticking out of your home, and is one less vantage point on the roof where leakage can occur by using this product. This valve comes with an adapter to use solvent welding or traditional pipe threading.
                      by
                      • Recommended
                      2 found this review helpful
                      Great little AAV. Trouble for me is I thought this would fix my issue but I had other problems wi...
                      Great little AAV. Trouble for me is I thought this would fix my issue but I had other problems with my plumbing. That's not the fault of this valve though. As others have noted, you should mount this in a very upright position. A degree or two off is OK, but just eyeball it as good as you can. For installation I purchased a special T to go along with. What I didn't realize is the T, while it obviously had 3 openings didn't have three seals and three nuts. So I had to make a special trip back to Home Depot just to get the last seal. So while you are there, spend the extra dollar (or whatever it is) and buy the extra seal and plastic nut... You can see it in the picture below. There's nothing tricky about the install. I have 1 and 1/2 inch pipes which are obviously not regular PVC pipe size. But they are the normal ones for under the sink. The AAV slips over that and just locked on with the nut. I plugged one end of the T, put the AAV on it and tried to blow/suck are through the T from the remaining opening and it worked great. I bought that T because it had the one long side. You are supposed to have the AAV at least 4" above the drain line. So that T made it possible without having to buy and assemble other parts. Good luck!
                      by
                      • Recommended
                      6 found this review helpful
                      No more gurgle-gurgle..
                      Bathroom sink had to vent and would gurgle-gurgle-gurgle every time water was run down the drain. Installed this item and it works perfectly!
                      by
                      • DIY
                      • Verified Purchase
                      • Recommended
                      2 found this review helpful
                      by
                      • Verified Purchase
                      Showing 1-10 of 174 reviews