不是说不让用了吗，怎么还有这个标准？

就是呀,规范已明确规定不能用,郁闷中

不错的产品，只要规程能实施，就能用！

除非能够改善原来吸气阀的性能，否则我认为是不能够采用的

国外关于AAVs的讨论，我英文不太好，仅供参考~
klempner
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In Minnesota we are thinking about allowing the limited use of AAV’s, under current code we do not allow a vent to terminate inside the building. Have there been any problems with their use? I see that the "I" code allows the use and the "U" code does not.
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DaveW
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The "U" code leaves it up to local juridictions. Our BO currently allows them for island sink. However in the past working with them, they will gum up (over years) preventing the venting process for the sink. Mobile home builders use them alot.
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Gary M
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These valves are mechanical devices that have moving parts and as such have a potential to fail under unusual circumstances. Plunger or jetting action while unstopping a stubborn sink are unusual actions that may result in contamination or excessive stress of the assembly or separation of an unglued valve from the riser (not installed properly).
The most effective control of these devices I have found comes from the code itself where it is required to install a relief vent in the branch before the stack. If you have to install this relief vent you may as well vent most installations by the standard method. This code section stops most convenience installations of these valves.
Gary Mullinix
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moscow
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here in Idaho we don’t allow them because its a mech. devis in the wall not only utah has used them and thay have been having problems with dry traps do to the valves on one thought that are plumkbing board is looking at if this is so and you are getting dry traps the cdc has proven that sras started from a dry trap in china so if this is so I wuoidn’t want to put people at risk
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jbh
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IRC P3114 allows listed Air Admittance Valves (two different types) but NOT the old "auto-vent" type. Proper installation is required. I am not a fan of these and we are looking into banning them by local amendment.
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IH
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Indiana allows them, providing they meet ASSE 1050 0r 1051 standards. I have’t had any problems with them, but they’ve only been allowed for five years. They must be accessible and be in a ventilated space.
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darren
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The air admittance valve was invented by Sture Ericson in Sweden in the early seventies. Since then, millions have been sold worldwide. Mr. Ericson introduced the valve in the United States in 1988 as the Studor Air Admittance System. Modifications to this original concept enabled this innovative valve to be adapted to plumbing systems in the U.S. Today, Studor valves meet or exceed all applicable performance requirements of ANSI/ASSE standards. The Studor Air Admittance System is acceptable for installation in virtually all building code jurisdictions in the U.S., including the SBCCI, BOCA, CABO, IRC and IPC plumbing codes. go to www.studor.com for more info.
The I codes specifically allow them, so if that’s your adopted code let it be or propose a code change...remember...minimum standards...
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tinhead
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Would you install them in your own house? I have asked many plumbers in classes and they always say they put them in but not in their own house.
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Snickers
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Most of the problems that arise from AAV’s come from improper installation or improper storage. The box says to store in an upright position. THis is because the rubber diaghram inside can warp. If stored on its side in a warm environment for too long, the diaghram warps into a nonsealing shape. When the AAV is installed in its upright position, it won’t seal properly, allowing sewer gas into the building.
The AAV must be installed a minimum of 4" above the horizontal drain. I always encourage the plumbers installing them in island sink situations to install them as high under the cabinet as possible. This way, if the sink clogs, the AAV will be out of the backed up water. This keeps contaminants from lodging in the AAV and "gumming it up" as mentioned in a previous post.

When stored and installed properly, AAV’s have a great track record. The problems arise from human error. Both can be remedied by educating plumbers and supply houses in your area about these problems and their solutions. As inspectors, we aren’t just here to do inspections; but to also educate ourselves on solutions to code problems and pass that knowledge down the line.

And yes, I would install them in my own home in certain situations.
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klempner
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I know there is the use of a product manufactures name for these products,and the reputation of that company if things do not go the way they feel they should. But, I was looking for both good and bad outcomes with the systems, have they had problems holding a 1’WC test, have they had problems with leaking gasses when the building goes to a negitave pressure, have there been long term problems, I have read the sales information, and know the biases,and I can see it in some of the replys, I would like facts,not a sales pitch.
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jbh
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Simple fact... it is a mechanical device that you are relying on to prevent sewer gas from entering the building. They only work to allow air to enter the vent pipe and do not vent positive pressure. They may be convenient for island sinks but there are other ways to plumb these that do not rely on a mechanical device.
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dpat
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Iwould like everyone that uses the "mechanical device" argument to consider a rpz and how we rely on this "mechanical device" to protect the potable water supply.
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klempner
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RPZ’s are tested anualy and rebuilt at 5years. The ASTM for AAV’s does not---but if the AAV group would like to include this in there ASTM, they would have a better chance of adoption.
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moscow
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ONE OTHER THING RPBA OR RPZ’S FAIL THAY FAIL SO THAT THE SAFTEY OF THE PUBLIC IS NOT AT RISK AS FOR THE AAV’S WHEN THAY FAIL BEFOR ANYBODY MIGHT FIND OUT ABOUT IT YOU HAVE PUT THE PUBLIC AT RISK
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Frank Castelvecchi
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Failure of an AAV results in the same condition as failure of a trap or trap primer--a smell of sewer gas in the building, with some potential for harm to occupants from these gasses, but more of an aesthetic issue in the short term.
However the potential for harm is provided with a strong automatic warning oder.

The AAVs are required to be accessible for maintenance if needed.

只能在特殊 情况下使用

邦哥吸气阀在全国各大工程中使用效果很好啊，为什么国外用了几十年在国内不能用呢？问题就是国内有的买家不注重质量只要价格越便宜越好，不合格的产品导致臭气外逸，如果有了新规范按标准生产出质量符合要求的产品，还是应该推荐使用，不要一棍子全打死掉！有的地方设计时用了吸气阀，确实带来很多方便啊？

2003.9前在多层住宅中使用了吸气阀来代替通气管，现业主在造反。请问设计要负多大的责任。