Old plumber talks about an automatic air vent. Venting plumbing fixtures.
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- Опубликовано: 8 сен 2024
- This is a video on an automatic air vent for renovations in your home.All plumbing fixtures in your home must be vented whether they are wet vented,individually vented or dual vented etc....This little vent has been around for at least 30 years and has a great track record....Please subscribe and have a great day! Al
Thank you for explaining this clearly & simply. Cheers
Hello ml9633,
You're more than welcome!
Hopefully it helps with any future projects!
Thanks for commenting and enjoy your week! Al
i greatly appreciate your professional opinion.
i have heard also that the vent line and sewage lines both have to be same size\ diameter n no less than a 3 inch pipe .?.
but also i do understand every job n county code or building rules is slightly different.
Thank you for the response. I did install several from different manufacturers and always cringed when completing the project. Never herad complaints yet... but can't get it from the back of my mind lol.
I spec these for island sinks and other spots where it would be hard to run a vent. Once I specified these at an exterior wall that had a steel beam above that didn't allow a vent to go by it. To make things more interesting, the architect had called for a clear glass counter top. I specified that the AAV be placed in a vented wall box located on the exterior. That got the AAV out from under that glass counter. These units save a lot of labor and therefore save the client a lot of money.
Hello laokram;
My father was a plumber and i can recall him using one back when they first came out. I believe it was in the early 80's and had no troubles.
I can relate to how you think. I have the same mind set.
Thanks for the comments and enjoy your weekend worry free! LOL! Al
Thank you!! You just saved me a bunch of money and time
Hello Ted Strong,
You're welcome!
Hopefully everything works out for you!
Thanks for commenting and enjoy your weekend! Al
@educatedrock hello;
Everyone has there own way of doing things for sure, but in Canada the plumbing code states that you can use this in an island in a kitchen. As far as them working for any length of time; they work very well for many years with no trouble. I would say the plumbing code of Canada would not allow them if they didn't.
Thanks for your comments and have a great day!!! Al
You could also use a utilty vent under a sink or the air admitance valve but you also have to have atleast 1 3" vent to open air in the system and I never met a rock yet that knew anything :-)
@deezynar Hey deezy;
That sounds like quite a little project for sure! I am a fan of them as they are allowed in Canada under certain circumstances. The code here allows this just for certain applications. I have used them and they do work very well.
Thanks for commenting and enjoy 2012! Al
thanks Al.. appreciate your suggestions.
Hello RestoreITdontJunkIT;
It can be used to vent a toilet, but it would not be up to code standards. I once chatted with a guy who used it for a vent on a toilet, but he ended up using 2 of them because he said the toilet flushed slow with one.
If I were you I would do everything possible before using it for a toilet. A toilet requires a one and half inch vent and the automatic air vent would not come close to allowing the same amount of air in. Just my opinion.
Thanks for commenting! Al
Thank you for this video.
Hello Stewarts14;
You are more then welcome!
Thanks for commenting and best of luck with any future projects! Al
Hello frankie2234;
Any vent installed in a plumbing system is installed on the downward side of the trap. So I would install it with a T-Y or y and 45 and bring it above the flood level rim of the fixture.
Thanks for commenting and enjoy your day! Al
Thanks for the information, helped out!
Hello Sprucegrove123;
You are more then welcome!
Thanks for commenting and best of luck with the installation! Al
Excellent comment. Good information to know.
@kenputer56 Hey Ken;
Sounds like experience speaking there sir. These AAV have been around for many years and do work very well.
Yes, the code wants one 3" stack going from the basement and continuing from there all the way through the roof and it has to be 3" all the way. In Canada anyway.
I like the rock comment...tks for reading below. That was pretty good!
Thanks for commenting and enjoy your day!!! Al
Hello jako t;
Sorry about that confusion. I had thought that it was a dishwasher.
A washing machine tied into a kitchen sink drain would work, but the drain size would not be big enough to handle both fixtures draining at the same time. You would have to cut a TY below the sink drain in the wall and make the connection there. There is a very good chance that if both the sink and washer are draining at the same time that the drain would back up.
Thanks for commenting and best of luck! Al
Hello laokram;
This model air vent is probably the least expensive on the market.It has been around for close to 3 decades.They have come out with many different looking vents,but they all basically work the same way.
I cannot recall having a problem with sewer gas coming from this air vent. The diaphragm is very light as well as the spring that controls it.Every municipality has different laws,but the Canadian Plumbing Code does allow an AAV in certain installations.
Thanks for commenting! Al
@melavey Hello there;
This vent is called a V200 as you probably know and in this part of the country; the inspector approves this style.
It all depends on the jurisdiction as to approval or not. Many different companies make these valves such as Moen and Oatey and they have changed the valve cover basically as well, but they all do the same thing in the job.
Thanks for commenting and have a great day!!! Al
@e1casper hello;
Thanks very much for your help. Always looking for information.
Thanks for commenting and best of luck in 2012!!! Al
@chromlic Hello there;
This is a relatively inexpensive device. The cost of this one is about 5 to 6 dollars. There are some that cost 4 to 5 times that price ,but this has worked fine in the past for me on the applications where it is permitted. Good bang for your buck for sure.
Thanks for your comment and enjoy the day!!!
Al
Now over 11$ in Canada...
Only took 2 seconds for me to realize he was Canadian 😁 I've heard them called a few different things one bring an autovent
Stephen I’m Canadian too and had a hard time understanding a few words. West coast we sound different 🤷♂️
Hello Joe;
I haven't seen any videos on how to repair an AAV myself. Pretty easy way to check an AAV is to remove it; clean it off and try and draw air through it.
I would say that the problem is with the drain rather then the air vent. I have not seen a bad one yet to be honest with you. I may be mistaken, but it sounds like that to me.
Thanks for commenting and have a great day! Al
Hello RestoreITdontJunkIT;
In Canada the code changes every time it is updated;such as the distance a vent can be from a trap for example.There is always something a little different.For years I had never ran a 3 inch stack through the entire house and now it is a must.Major differences from country to country as well. Some of the local inspectors want certain things done as well which always makes it interesting.
Thanks for commenting and have a great day! Al
Hello jako t;
Best of luck with the project!
Thanks for commenting and enjoy your week! Al
Hey could you install this vent if it was coming off the the branch of the sanitary tee, with the tee in its back ?
@saclvc try lowes i have worked there for yrs. and we have always carried them there
In the U.K we use anti vac traps that do the same thing. :)
@saclvc hello there; BOW Plastics make this product. You can check on line as to where to find their distributors.
They make many different items and this is one of their products. Good luck and thanks for commenting!!! Al
@shojimon Hey there; No sewer smell will come back from the drain because of the spring that applies pressure on the diaghram to close it once it has allowed air to enter the system. Very popular now especially since the plumbing code allows them to be used in certain places. Thanks for commenting and have a great day!!! Al
They will corrode and they will fail, they also can’t handle any pressure.
@1809blossom Hello there; sorry for getting back so late to you. Had a short vacation. You can pick up an automatic air vent at most hardware stores. They do work very well. Thanks for your comment and have a great day!!! Al
Hello jako;
It is very possible to modify a drain line under a kitchen sink to allow you to hook up a dishwasher.
I made a video on installing the drain connection....Old plumber show how to Install a dishwasher drain under your sink.
This video is how they are installed in Canada in almost all houses. I have been doing them this way for years.
I hope this helps!
Thanks for commenting and best of luck with your project! Al
Thank you for your video. I understand the logic that a drain needs a vent so the vent can supply air to replace the exiting water. But...doesn't the air above the water we see in a sink, toilet, etc. replace the exiting water and allow the water to drain easily? What would happen if there was no vent? Oh, never mind, I just figured it out. The water seal in the p-trap would be siphoned down the drain if there was no vent! I hope I'm right.
Hello Nicholas;
Not sure if you ever heard a drain on a basin or tub/shower make a sound after the toilet is flushed; But that is a sign that the fixtures are not vented properly.
What can happen is the water be siphon out of the trap and sewer gas fill the room or house. Sewer gases may include hydrogen sulfide, ammonia, methane, carbon dioxide, sulfur dioxide, and nitrogen oxides.
Sewer gas is typically restricted from entering buildings through plumbing traps that create a water seal at potential points of entry. In addition, plumbing vents allow sewer gases to be exhausted outdoors. Infrequently used plumbing fixtures may allow sewer gas to enter a home due to evaporation of water in the trap, especially in dry weather.
Thanks for commenting and have a great week! Al
TheOldkid888 Thank you. Good information to know. I always wondered why they call it a p-trap....and I thought it had something to do with urine. So, it's short for plumbing trap.
Hello Nicholas;
LOL!
Just the shape of it. I am sure you saw s-traps as well. They were used for decades before the p-trap became code.
S-traps are no longer permitted.
Thanks for commenting and have a great week! Al
Hello Nicholas,
You're welcome!
If there is no vent in the system the water would slowly go down the pipe.
The water would be syphoned from the trap if it was not vented correctly and water entered the waste line from another fixture. The water flowing down the pipe creates a constant draw or vacuum and will syphon the water. Sometimes you may see it when a toilet is flushed and you hear a girgle or see water in another toilet move a lot. This is a sign that the vent should probably be bigger or it is not vented properly.
Thanks for commenting and enjoy your weekend! Al
Does the spring ever rust? Also, if the line gets blocked downstream would the AAV overflow? And, 20 years down the road, could a different make valve be used as a replacement?
Hello. Great product. Will it allow any smell from the drain into the air??
They were originally only for use in repair work, but now people use them in new work, and they have to be accessible because they are a mechanical valve and will fail.
thanks v.much for replaying.. i wanted to know about a washing machine. my kitchen already has a dishwasher but i want to hook up a washing machine beside a dishwasher. so is it the same process?
Thank you!
Hello Lynell,
You're welcome!
Hopefully it helps with any future projects!
Thanks for commenting and enjoy your day! Al
hi , i need an information , the pipe can stay in the wall ? or need more air for work ? need to go under the roof or outside ? thank's
How would you hook this up to a bath tub? Would you "y" it off the drain past the "P" trap heading for the sewer or T-it in to the overflow pipe?????? Thanks.
My kitchen has an auto vent drain and is now draining slowly. The gurgling sound tells me it's an issue with the vent.
Are there any videos of how to troubleshoot and repair an auto vent?
The aav has male threads and will screw out then you can screw another in.
Is there a vent that will let air in but will stop water from coming out of the vent if the drain going down to the floor is plugged? Thanks for the Video
+RC944jim
Automatic air vents (mechanical vents) do exactly that. The one in this video is an older model and they have changed them considerably the last few years, but they still act the same way. When the fixture is flushed a diaphragm is pulled down allowing air to enter the system. A spring pushes the diaphragm back in place once the system has been satisfied. This diaphragm prevents both water and air from escaping.
Thanks for commenting and enjoy your week! Al
+TheOldkid888 I want to thank you for the quick reply have a great weekend.👌👍
RC944jim
You more than welcome!
You as well! Al
is an In-Line Vent installed in a Kitchen Sink usually cemented in place? I ask cause I think mine is not getting enough air intake as my sink has clogged up really badly and I took the trap screw off to let the water out, and fished around in the pipes with a cable and can't see any blockages in the pipes. I was wondering if I could unscrew the inline vent cap as it seems to be unscrewable and I want to turn it with a wrench but dont want to break anything especially if its cemented in place.
is it possible to change the whole plumbing system in the kitchen to accommodate a washing machine?
please make a video.expaining how to use an automatic air vent for the washer machine drain pipes.can we install it inside the wall too or it's only for kitchen p traps?thanks
Hello Ruben,
It can be used on any fixture. Big thing is to try and keep it as high as possible. If you are installing it in the wall be sure to install an access panel for inspections.
Thanks for commenting and enjoy your week! Al
Thank you for posting this video, it was very informative. I have a plumbing if its ok to ask. I have a home that is up on pilings and the bottom floor (garage) which is level with the outside ground. The entire bottom of the home where the pilings are is enclosed and has a cement slab. I would like to add a utility sink on that level so when I come in from fishing or crabbing I can clean up. I have the 4" home drain pipes available that go directly into the basement slab then to the street. The problem is there are no vent pipes available to cut into. I was wondering if I could use one of those automatic air vents instead of connecting it into an actual vent? If not what can I do for venting? Thanks - mike
Hello Mike,
Not a problem to use it for your project.
I have started using a different one since I made this video. Little more costly, but works the exact same way.
Run your drain to what ever height is required for the sink waste (kitchen sink...18 inches to the center of the tee from the floor) generally and then extend it up as high as you can under the counter. If the garage walls are exposed you can take it above the counter top which is even better. If you are planning to close it in leave an access hatch to allow for maintenance checks. Very few problems ever with these vents if installed properly.
Any other questions feel free to ask.
Thanks for commenting and best of luck with the project! Al
Do these ever go bad? i have one in my kitchen, sink drains super slow and backs up when dishwasher is on, i snaked the lines they are clear. If i remove this vent, all works great. I even went on my roof to make sure that vent was clear since its winter. Been living here for 5 years, we heard some gurggling every once in awhile but now its constant and very slow
Hello Acreage Living,
It is possible for this to fail, but they usually fail open. A small stainless steel spring works to close the valve. Since this video they have made them with no spring in them.
I believe the problem could be in the drain line although you have cleared it with a snake. You could purchase another vent and try that, but I would make sure the drain line has been cleared well before you do that.
I have seen drains over the years that have had little to no vents on them and still drain with no back up. It's strange sometimes how things work with plumbing. been at it for 41 years and I still see something different once in a while and say to myself...how's that working?
Proper slope on pipe makes a huge difference when it comes to backups of the system.
Thanks for commenting and best of luck with the repair! Al
@@TheOldkid888Thank you! I think my snake just pushed the clog down the line or it was not a full clog. I actually made it worse after snakign it some more, so knew I was clogged forsure. Went under the house in the crawlspace and cleared the line at a clean out,, all is good now! It was very weird, because when I would remove the Air valves from the system, it would drain fine so i dont think the clog was that great at first. But after snaking it a few times, that stopped and i was clogged solid. Which was good, because the ni knew i was clogged! All good now!
@@acreageliving You're welcome!
I am glad everything worked out for you! congrats on the repair!
I have seen it several times where the same scenario played out . Run the snake down and think everything is good, but end up worse off than before. Quite often the snake just pushes the garbage down the drain further. I always fill the sink and let it go to make sure things are working fine afterwards. A good blast of hot water helps as well.
Thanks for commenting and enjoy your weekend! Al
I'm having some major issues with my kitchen plumbing -- first I noticed water in front of the dishwasher when it ran, then the double sink wouldn't drain (drained VERY slowly). After snaking ~25 ft in thru the trap I noticed the main drain pipe is leaking a bit at one of the joints (at least one gasket from another joint seems to be missing, too). Today, I went ahead & used baking soda & vinegar in the disposal side, which seemed to work just so-so; I went ahead & ran the dishwasher with BS/V, and noticed that each time it drains water spurts from the pipe vent under then sink. HELP!!! I don't know what to do, or which problem to tackle first. (Oh, and did I mention that my husband is on disability? Yeah, money woes, too. /sigh/)
Hello Christina,
Let's start with the sink drain. Does your sink now drain properly?
I know some of the questions I ask are going to be a bit tasking to answer. Do you know where the sink drains into to. Does it tie into the septic or are you on street sewer?
You mentioned the sink vent pipe. Is this pipe open?
Not sure of the configuration that you may have under the sink, but you may just have to snug up a nut to solve one of the small leaks. Is the gasket missing on the bottom of the kitchen strainer where is attaches to the piping or a brass or plastic tailpiece?
Thanks for commenting and get back to me when you get a chance....Al
will gasses or odor's escape through this unit and make your kitchen smell ?
Hello Fireguy,
No. unless the device gets faulty; you shouldn't have any issues.
Since I made this video; different manufacturers have improved the look and engineering of the vent. Studor and Oatey are a few that I have used myself. They are basically the same as the one in the video, but they have a sturdier appearance to them.
They work very well if installed properly. I always install them as high as possible inside the cabinet about 1" below the counter top.
Thanks for commenting and enjoy your weekend! Al
Hello there,
I'm looking all over for a chrome finish auto vent. Do you happen to have the make and model of yours?
Thanks
I have a large sink, and not a lot of room on the sides of the tub. Is it OK for the top of the valve to be below the bottom of the sink, yet still 6" above the P-trap?
+Condor1970
The air vent should be as high as it can be above the trap. That will work out fine for you. I usually try and get them up as high as possible in the corner of the cabinet.
Thanks for commenting and best of luck with the project! Al
since it is after the P trap... are there any negative effects as far as smell coming back up despite the spring operated diaphragm?
None for me.......Had it on 12 yrs.
Another alternative to using an air admittance valve for an island sink is to oversize the drain (3" for a kitchen sink) and have a clean out at the top of the vent inside the cabinet. No risk of the valve failing and an easy access for drain cleaning later...
still needs to be vented VIA exterior of building, or have a AA valve. The older ones aren't allowed a lot of places per new code but have hear the expensive ones are
Hello Kenneth,
It needs to be vented in this neck of the woods as well. Whether it is a loop vent or an AA; it needs to have a vent on it. Since I made this video they have come out with a much better model. I don't believe you can even buy this one any more. Studor and Oatey both make a good valve.
Over sizing the drain line will give improper self scouring of the pipe as well. that is the reason a kitchen sink line should eb 1 1/2" in size.
I personally prefer not to clean kitchen sink drains.LOL! I have no problem with bathrooms, but you can get into quite a mess at times with grease and end up wearing it for quite some time after. I have come across it hundreds of times unfortunately. Graese is the killer of any drain.
Thanks for commenting and enjoy your day! Al
LOl yes they still sell them and they are about $7 so people generally buy that one thinking it will pass code and now adays they want the actual roof vent (or tied to the main stack) or the AA type :).. thanks for the video as I have watched several and confirmed the newer ones indeed pass code in most areas
Hello Kenneth,
Thanks for that!
The other two I mentioned are of much better quality. They are only permitted on kitchen sinks in islands in this part of the worls unbless the inspector allows it to be used. He does have jurisdiction and can over ride the code.
Thansk for the info! Enjoy the rest of your day! Al
I have one under my sink in my RV bathroom. I get one shower’s worth of normal draining then in the middle of the 2nd shower, I have go unscrew the AAV and the shower drains normally again. Bad valve? Thanks
Hello Johnny,
There is a good chance...
It sounds that way. Since I made this video they have improved upon these valves. A bit more expensive, but well worth the money. I would seriously look at replacing your valve.
Hopefully it will correct the problem.
Thanks for commenting and enjoy your day! Al
TheOldkid888 thanks for your experience.
Can I use this for a shower? I need to know asap.thank you.
Hello mysongordon,
Yes. This can be used on a shower if you have no other choice.
I have started using a different air admittance valve since I made this video.
The newer model is a bit more costly, but does the same job. You are looking at around $20 dollars.
Run the vent line up above the basin height. You should leave an access hatch for future inspections of the valve.
If you are installing it in the basement, I generally bring them up into the ceiling.
Thanks for commenting and have good day! Al
When we bought this 70 year old house (13 years ago)the back bathroom they added over a porch did not have any gurgling sounds at all, but a few years ago it started in. Every time you flush, take a shower or use the sink it gurgles SO loud! I do not see a pipe coming out of the roof in back where it is but the front bathroom is vented that was built in the 50's. Is it possible they tied into the old vent ? We live way out in the county so they may not. Anyway no smells ever come up from sewer and I really want to fix this. Do I have to put one of these on every fixture? Sorry so long.
+1065Olivia
Air is more than likely your problem.
You will not have to install one on every fixture. Under your basin there is a p-trap that probably goes down through the floor with a 90 degree elbow. It is in the shape of an S. So it is actually an S-trap . Where the elbow is located that directs the pipe through the floor; you would install a TY and install a female adaptor on top of that. This is where you would install the air vent by threading it into the adaptor.
Will make a video for you on this subject within a week. Stay tuned.
Thanks for commenting and have a great day! Al
+TheOldkid888 Thanks for the quick reply! But it is not an S trap. It is a P trap and goes back into the wall. This bathroom was added much later, probably in the 90's. I replaced an S trap in the old bathroom myself a few years back.
1065Olivia
If it runs back into the wall then it should be tied back into the main stack if it is not venting through the roof.
It could be tied in somewhere and possibly plugged.
You don't have a hatch in the porch ceiling by chance. It would be good to see if it goes back to the main. Is it a two story home? Is the kitchen sink relatively close to the porch?
If you install a TY in the pipe going through the wall on its back and face it; you can install an automatic air vent on the top of that. You can face the TY on a 45 degree angle and then use a 45 degree elbow and place the female adaptor up into the corner of the vanity. Just leave it down enough to allow the automatic air vent to be screw in. This will definitely help your problem.
Thanks for commenting and have a great weekend! Al
+TheOldkid888 Thank you again! It is a 1.5 story. Funny about the kitchen sink it pipes to the yard. Will be fixing that soon as well. We are in the boon docks. I will have to go in the root cellar and see if I can investigate this further. I think I can see some plumbing from there maybe. There is attic access to the front porch... And access to attic above back bathroom. Strange house with two attics. The things people used to do when they added on... you have to take a panel off the wall upstairs, to find a window and then crawl through to a walkable attic. lol
1065Olivia
Get back to me when you get a chance and let me know what you find!
Thanks for commenting and have a great weekend! Al
Would this meet code even if it weren't for an island application? I have a situation where I'd like to avoid putting another hole in my roof and connecting to an existing vent stack will be a big hassle. I know code is different everywhere and I'll probably have to call the permit guys. Thanks.
Hello Radnally,
I am not sure as far as it meeting code in your area. An island sink is where it can be installed according to code, but codes are different in every country.
I have used them for other applications besides an island sink with no issues.
Where were you planning on installing it?
Thanks for commenting and have a good day! Al
I have a problem as we speak,both of my bathroom uses them ( everything) when there is a problem how do you find it?
Hello Joe,
Not exactly sure of the question, but if you are talking about the automatic vent; they are generally located inside the vanity or cabinet close to the underside of the counter top.
Do you have a main stack going through the roof? There should definitely be one located somewhere.
Thanks for commenting and get back to me when you get a chance....we will see if we can figure out what is taking place. Al
Is it possible for these vents to "get old" and "go bad"? Two sinks in the kitchen...when pouring a bunch of water down the drain of the main sink, bubbles and water will pop up in the island sink (island sink has the vent) It's gradually gotten worse over the past year so I went out and purchased a Rigid power snake which hooks up to your drill...1/2” X 25' long. Ran that Full length down both pipes and didn't get much gunk out. Filled main sink with water and let it drain but it still comes up the island sink, not nearly as bad but still. Does this sound like a clog or a vent issue? Is the power snake not big enough in diameter to do an effective job?
MadMaxx63 make sure that Studor vent has a tiny hole so it may breathe. Otherwise it'll create an S-trap.
These fittings are "air admittance" vents only. They do not allow for releasing of air. They don't because the air would be mixed sewer gas and you don't want that coming into your home. There would be some bacteria coming in to the house as well as that sulferous smell of sewage. Don't want that especially coming out a kitchen island.
A proper fix would involve a plumbing vent line going outside with the proper slope to allow for air movement without the chance of an air trap formed anywhere. After the sink traps that is.
Gary Wheeler that may be true however, without a hole to allow the system to breathe, a S trap will be created. Effectively draining the p trap and leaking sewer gas.
The trap can't be drained by suction from below because the air admittance valve breaks suction, allowing air in.
MadMaxx63 Yes get can get defective, i have seen a brand new one a Studor vent fail when i was doing a plumbing finished work that means before final plumbing inspection. but just replaced for a new one.
the plumbing illistrated manual clearly states No Mechanical Vents. venting an island sink is accomplished with a loop vent that has been approved by the inspector
Hello Ralph,
The plumbing code of Canada allows this mechanical vent to be used for kitchen sinks in islands. Installed a number of them with no issues.
The plumbing inspector has final say in all plumbing installed in any work.
A loop vent can also be used, but a mechanical vent is allowed.
Thanks for commenting and have a great week! Al
TheOldkid888 your excused
TheOldkid888 keeping it in mind that manfactures of this product wants to see that all new construction and remodles use these mechanical vents instead of through roof vents. this will never happen. sewage in the street main will stop flowing
Hello Ralph,
Thanks!
There is only a few applications where I would use one and they would always be accessible.
We will always need roof vents. I have seen a few homes with them attached to the stack on the roof to prevent the smell of sewer gas from floating around the yard. BAD idea!
I don't know if sewer in the streets would stop flowing, but there would be some serious plumbing problems in everyone's home!
Thanks for commenting and enjoy your week! Al
Question every vent I think has been cut but vent under sinks but having drain and toilet not going down what can I do?????
Hello Annette,
Is this a new house or one that has been sitting for a while. Need a little more information so I can try and help you out. Is your sink drining well? Sound slike it could be a plugged sewer line.
Get back to me when you get a chance.....Al
Kitchen sink drains very, very slowly. When i reach under the sink & unscrew the air vent the sink drains fine. Is the air vent not working.
Hello sgtjim,
It is possible that the air vent is not working. I really haven't come across any yet if installed properly. I have found a few that were installed incorrectly and did not work right and leaked both air and water.
If you open the cupboard and listen closely when all the water is almost gone you should hear a little flutter sound.
You didn't try a plunger on the sink by chance? If it is a double sink plug one side and plunge the other. I would try this before you replace the vent.
Thanks for commenting and have a good day! Al
I have PVC pipes in my bathroom.
Hello 2020Bookworm,
The piping in home varies from place to place throughout the world.
I have seen both ABS and PVC in homes. Big difference in the installation of the piping is that primer and glue is required for PVC where primer can be used on ABS pipe and fittings; it is not required. I have not used any primer on ABS in over thirty years with no issues.
Thanks for commenting and enjoy your week! Al
@@TheOldkid888 What are some of the pros and cons when comparing ABS to PVC? Are there local requirements to use one vs the other? Is it entirely an installer's choice based on what's available in the region? Are there environmental factors that give one a performance advantage?
Not allowed in UPC jurisdictions..Please check your local building code professional
can this item be used to vent a toilet...?...
Just turn with a 90° instead of a tee... 😆😆😂😂🤣🤣
Then how would it be vented? 😂😂😂😂😂🤣🤣🤣
A proper fix would be an island vent
just bought a water pressure back up sump pump that calls for a air gap don,t understand why i need this
Hello Michael;
The air gap would be required if you were tying it into the sewer in the event that the sewer was to back up; it would not go into the sump pit or it could go into the water supply.Chances are very unlikely that it would happen, but it could be a one in a million.
I have come across many of them tied directly into the sewer with no air gap or check valve.
If you are tying it directly into the sewer you should at least have a check valve on the drain line just before it ties into the sewer. Then you have no worries of anything backing up in the event that the sewer did back up.
To get around this problem completely i would install a backflow preventer on the waterline going into the unit and a check valve on the drain line leaving the pump if you are installing it into the sewer.
Thanks for commenting and best of luck with the installation! Al
Without reading every comment to see if it was asked or addressed, these might be a repeat questions. You mentioned you started using a more expensive model. No reason given for spending the extra money. No name given for this model either. Plus i would like to know if water were to be held up for some reason, and backed up in to this valve would it leak water, or is it designed to not leak. Thanks
Hello Dave,
They are built to allow air into the plumbing system.
Water should not come out of it if the system should back up, but I cannot guarantee it.
If installed properly you should have no issue.
Reason I am using the more expensive is simple; better quality.
Thanks for commenting and enjoy your day! Al
he is referring to the Studor and Oatly brand that are designed to meet or exceed code ruclips.net/video/QbYYJN4R36c/видео.html
are these the same as a Studor vent?
Hello Nick,
This was one of the first vents in this video.
The Studor does the exact same thing; only built much better.
I have started the using the Studor vent a while back. Excellent product!
Thanks for commenting and enjoy your day! Al
these are now considered the cheap ones.. The Studor is the King and are built to not fail. I don't work for them, but have used them on my house and saved me the expensive task of running vents to the 1900s plumbing. They work different and well I might add
what does it cost?
My air vent is overflowing with water. Can you tell me what the problem might be?
Well I just snaked the drain and it went away.
Hello dvdfrnzwbr;
The drain was definitely plugged. This is the only thing that would cause this to happen if it is installed properly..
I would consider installing a new AAV as water should not come out of the top of it. The spring maybe getting week!
Thanks for commenting and have a great weekend! Al
Thank you for your help and telling me about changing the AAV because that was also a question lingering in my mind.
TheOldkid888
I took the old AAV out and blew into it with my mouth from the bottom and air went thru easily without resistance. I also noticed that the visible rubber gasket in there looked like it went thru a war. So I purchased a new Oatey AAV for my kitchen sink drain which was quite expensive at $21 I then blew into the bottom of the new one and it resisted, when I sucked air with my mouth it opened. I noticed that if I blew air in hard enough it would let air slowly pass thru, so I assume these are only designed to keep still air from passing which makes them delicate.
When my old AAV was still installed I was using a toilet plunger alot to unclog the sink at the top of the drain. Is my thinking correct that you can easily damage the AAV with water pressure comming from a toilet plunger? I'm thinking that a plunger shouldn't be used when there is an AAV installed.
Hello dvdfrnzwbr;
You should be able to use a plunger to clear a sink drain that has an automatic air vent on it.
I know the rubber they use to make them is not of high quality, but serves the purpose well. The newer ones that are out now are much more expensive such as the Oatey that you purchased, so you should not have any issues with the rubber going bad for quite some time. I would check the grade of that drain as you should not have to plunge a sink or basin drain that often if it has the proper grade on it.
Thanks for commenting and enjoy your week! Al
Hi, Where can I buy this air vent? Thanks
Wait! You didn't point out that a mechanical vent is a measure of last resort. First off. Never install a mechanical vent in a location that is out of sight and/or inaccessible. I don't live in the Great White North, but I suppose they make them in sizes larger than 11/2", Eeech! One thing I know about standard venting. It's going to last as long as the building. A mechanical vent has a lifetime. From that of a Midge to one of a Horse. Tsk,tsk! I'm an old plumber.
Hello Richard,
True enough! Last resort.
Actually legal as far as an island sink as you know.
I appreciate the input!
I believe they do make them bigger than 11/2".
Thanks for commenting and enjoy your weekend! Al
this one is not code these days. the Studor ones however are
Hello Kenneth,
Thanks again foir the input! Al
These spring loaded type never complied to UPC or ICC code. There are a few other listed AAVs - all I have seen carry a UPC mark.
There better NOT be a spring inside. It must be GRAVITY closed by all codes. Mechanical valves with springs are verboten.
Very nice presenter....unfortunately he is totally wrong that this is allowed by code for a vast majority of local jurisdictions.
Hello Brian,
I should have clarified that it is allowed to be used on island kitchen sink drains. It is actually in our code book in our country.
Since making the this video they have made the vent much more industrial looking.
Thanks for commenting and have a great weekend! Al
You dont seem that "Old" sir...
Hello Tobolose;
Thank you! I am in my fifties now and I guess that isn't that old although there are days when I feel a tad bit older! LOL!
Thanks for commenting and have a great week! Al
Is this permitted in New York State!
Hello Round,
No...They have made changes since I made this video. They are built better then this style although this style had been used for a few decades.
The new air admittance valves are supposedly made better and cost a bit more. In the $20plus range. Not sure about the code in New York, but in Canada we use them on island kitchens where it is permitted by code.
I have seen them used in many different places.
I would ask someone in your area.
Thanks for commenting and enjoy your week! Al
under no circumstances would I ever put an automatic air vent in any kind of system. You mention island sinks, why not back vent and run a 2 inch line to the island sink with a glued (no union) p-trap like we do in Canada. if your spending 5 to 30,000 on a kitchen reno and your worried about breaking a few holes, blah blah blah, what about rusting the spring shut and or open. They work great for about a month. I can't tell you how many I have ripped out because of stupid installations
In civilized states the AAV is not allowed as venting should not rely on a piece of rubber for integrity .. For example if the rubber dries out then sewer fumes are going to enter the structure and these fumes are carcinogenic. Also cheater vents rely on moving parts not the greatest idea when venting a drain line connected to a soil pipe
Hello Sylvan;
Codes in North America allow them to be used.
They have been used for a number of decades now and have a very good track record.
Thanks for commenting and have a great day! Al
They work. I have been a plumber for 46 years so I know what works and what doesn't work. And yes you can use them by the code.
I work as an expert witness and many times the unknowing will have a vent below the "Flood level rim" of a fixture and when there is a blockage where do you think the waste will flow out?
and non mechanical devices work better BUT then again I have only been in the profession from 1968
It's 2018, and Kentucky Plumbing Code does NOT allow air admittance valves. Kentucky has its own code- neither IPC, nor UPC.
"Then" is an adverb used in time comparison. "Than" is a conjunction used in making comparisons. Poor grammar makes Billy a less reliable instructor.
who cares? we are talking about PLUMBING problems.......have a seat.
Obviously you don't care. Go back to third grade.