How to Replace S-Trap with a P-Trap | How Drain Plumbing Traps Work | Air Actuated Valve Install

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I replace an illegal plumbing S-trap with a P-trap under the kitchen sink and install an air actuated valve in the system to act as the drain vent. I give a detailed description and illustration of how each of these plumbing traps function.
Brettley Built features projects involving welding, electrical, plumbing, carpentry and much more. My channel is dedicated to teaching you how to do tackle projects yourself and save money. My wife, daughter, and I live in western Pennsylvania on six acres. We enjoy being outdoors, making improvements to our property, and making things. We adore our four dogs and three cats. We hope you enjoy our videos and spend time with us as we build and create!
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31 июл 2022

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Комментарии : 90

@mrscheekymonkey24 Год назад

Thank you! Purchasing a house and the inspector noted s-traps. Feel confident now I can update them myself. ☺️

@JeffSG71 Год назад

I’m currently installing a new vanity in a home we just bought and am dealing with an S-trap. Thank you for the instruction.

@jamesphilips4290 Год назад

Fixed up my S-trap kitchen sink thanks to your instructions, Thanks

@rescueponies4325 7 месяцев назад

Love how clearly you explain all of this. I’ve been afraid of plumbing. But this makes me more confident. I want to put a new smaller vanity in a small bathroom which may require replumbing the sink p-trap. Thanks for this!!!

@W0lffb0y 6 месяцев назад

The detail in this video with all the tidbits. Thank you so much.

@lauriewilliams4557 9 месяцев назад

Thank you Brett. This worked for me to change S-trap to P-trap.

@duniel2832 8 месяцев назад

Awesome video! You saved my day! I really appreciate it! Thank you for taking the time and explaining so well!

@robertlundgoot4736 7 месяцев назад

The best! No nonsense, very clear and concise.

@hubbadubchub 7 месяцев назад

Incredibly informative and helpful. Thank you so much

@johngoold1218 8 месяцев назад

The video still helps out a year later - thanks for doing this. I need to change out several "S" traps in the house we are buying.

@garyr193 7 месяцев назад

Thank you, sir, for a great help in doing my utility sink in the basement.

@bouvyc Год назад

Excellent video! Thank you.

@davidlutz4423 6 месяцев назад

Thank you. This is the best and most instructive presentation that I have seen.

@TruthSeeeker777 Год назад

Great video! To the point, great camera angles, and explanations were cear and and easily understood. Thank you sir!

@oddysee3030 Год назад

Thanks so much! This was VERY helpful. I appreciate you :)

@odeemom 7 месяцев назад

This is such a helpful easy to understand video. Thanks

@SwolShark Год назад

Great video!

@JK-hd2zb Год назад

Nice job

@Yes_I_c4n 9 месяцев назад

Great video, mate.

@dlloytl 10 месяцев назад

Btw this is a great video and you Re great instructor

@user-dv9dv5yy4p 7 месяцев назад

Uncle Eddie from National Lampoon was the reference. Thanks for the video!

@tomfowlbal1185 5 месяцев назад

Cousin

@richiestarks6163 9 месяцев назад

That Cousin Eddie. 😂😂😂😂😂

@saramynarcik8179 Год назад

Great video. Have you have any experience with diverting greywater from sinks? I'm currently building and would like to be able to switch the drain of the sink from going out to the yard (during dry season) back to septic tank when necessary (during wet season). I've looked at gate valves and/or ball valves to place under the sink for easy access in changing the flow. Any thoughts? THX!!

@brettleybuilt Год назад

I think the issue you would have with valves and gray water is clogging at the valve that will be shut off for months at a time. The thought that comes to mind is to put a clean out before each valve, that way when you go to divert the water you can open the valve that has been closed for months and flush out any debris that has accumulated. I think gate valves would work the best for this application.

@saramynarcik8179 Год назад

@@brettleybuilt Thank you for your response. Great suggestion for the clean out before the valve. Keep on making the very informative videos!

@sharibland4808 Год назад

👍👏

@hippo-potamus Год назад

Thanks for the video and explanation, I think I might as well replace mine as well. Did you just buy all the parts at the hardware store or do you have any amazon links for the items?

@brettleybuilt Год назад

I bought everything at Lowe's.

@huck4809 9 дней назад

Great video! What about 1.5" S Trap piping that goes directly into a 4" floor drain ?

@brettleybuilt 5 дней назад

You wouldn't need an s trap or a p trap if the piping is going directly into a drain if the drain is open to the air. If the drain is sealed with a cap or something and the 1.5" piping is sealed into the cap so the drain isn't open to the air, then you would need a p trap.

@joanguerrero3157 Год назад

Awesome video, I have a similar problem but my drain pipe is 2-1/2 would your solution in the video still work?

@brettleybuilt Год назад

It would if you used reducing bushings to get to 1 1/2 inch pipe and then follow the setup like in the video. Find an old guy at Lowe's who works in the plumbing department and hopefully he can find the pieces you will need.

@anthonyrobinson973 10 месяцев назад

What if I have an AAV beneath the sink but still have a smell when I unscrew the pipes near the S trap-- is that normal? Great Video. THANKS!

@brettleybuilt 10 месяцев назад

Yes. If you disconnect the plumbing you will most likely have sewer smells. When everything is installed correctly, there shouldn't be any odors.

@cdcVintage Год назад

This video was great. Can I do this without the air actuated valve? My concern is that the valve would fail someday and gases get into my house.

@brettleybuilt Год назад

If you don't use an air actuated valve, the the p trap has to go into a pipe vent.

@spl4shyboy269 Год назад

great vid ... was there no existing vent connected to the sink drain system already? Do I have to put the air valve on when replacing S to P ?

@brettleybuilt Год назад

There was, but the vent is after the s trap so you either need to add an air actuated vent or connect the new p trap the vent through the wall.

@tubingit10 Год назад

Nice job! If the drain is inside the wall, what fittings do you use to raise the drain? I ask this bc on a new vanity, I don’t want to cut the floor of the vanity to accommodate the p-trap when I can cut into the wall and raise the drain inlet

@brettleybuilt Год назад

I would use a Fernco. They are a rubber connection with a clamp on either end that fits over the pvc. If you send me an email I can send you a drawing as it is kind of hard to describe. brettleybuilt@gmail.com

@tubingit10 Год назад

@@brettleybuilt yep, I’ve used those before. I think now they are using the ones with a metal shield over them

@miked1307 11 месяцев назад

Thank you for the great video. Question, do you always have to install the air actuated valve or is it situation dependent?

@brettleybuilt 11 месяцев назад

If you can tie into a vent pipe it is better to do that. An air admittance valve or a vent pipe are your two options.

@miked1307 11 месяцев назад

@@brettleybuilt ok thank you

@HomeownerDIY Год назад

I have never put pipe compound on ABS threads before, but I have heard it can disolve the ABS, have you ever experienced this?

@brettleybuilt Год назад

No, I have never had a problem with that and have never heard of it being a problem.

@b-tay2427 Год назад

@@brettleybuilt what if you have to change the valve

@ToolTalkCanada Год назад

Great video, but this type of installation would not be permitted in some places, including Ontario, Canada where I live. Here, the code says AAVs must be intalled above the flood level rim of the highest fixture being vented. So I don't think an AAV beneath the sink like yours would pass code here. I have an s-trap under the kitchen sink in our 1950s home and I'm trying to figure out how to fix it without a major remodel.

@brettleybuilt Год назад

I have never heard of these ever being an issue when installed to our local codes. I hope you find a reasonably easy fix. I am going to the Calgary Stampede in the next year or two with some of my friends from Edmonton. I can't wait.

@thisisyourcaptainspeaking2259 10 месяцев назад

An s-trap with large volume is better than a small volume. Personally, I'd use the valve in this conversion.

@m.b.1974 9 месяцев назад

Dual-seal air admittance valve is best. Thanks for the install video.

@don2deliver 5 месяцев назад

AAV above sink flood level most places is code. For an addition or extensive remodel only a true 'tto the roof vent' or vent tie in is required

@themostexpertest Год назад

So I have a reoccurring slow/blocked drain and an s trap. I think it may be due to improper venting. Do you think that's possible? And would this solve my problem if the venting is the problem.

@brettleybuilt Год назад

If venting is the problem, this will absolutely fix the problem.

@Skashoon 8 месяцев назад

Is it necessary to extend vent pipes through the roof? Can they be run up the exterior wall of the house?

@brettleybuilt 8 месяцев назад

For toilets and showers, yes, the pipe has to go through the roof. I would only use and air admittance valve for sinks. If you are considering having the pipe go into an attic or some interior space where the pipe is open and can get air, the answer is absolutely do not do this. The sewer gases will build up in the attic or open space and create a dangerous situation.

@EMo-rx7pm Год назад

Great video. When I empty my bathroom sink, the water in the trap in my shower goes down and gas is getting back thru. You can hear the shower gurgling and then gas smell in shower but only happens when I use the sink. Any ideas?

@brettleybuilt Год назад

There is probably an incorrect pipe connection below the floor shortly after the sink drain or the plumbing in the bathroom is not properly vented.

@nandisaand5287 5 месяцев назад

Is it not correct the lenght of the straight coming off the P-trap (going into the ABS in your example) has to be at least 2x the diameter of the pipe? I saw that somewhere.

@brettleybuilt 5 месяцев назад

I have never heard that.

@wwfera00 Год назад

How would you install a p trap system in a mobile home sink that has the main pipe not on the wall, but going down on the floor? Would a p trap/s trap work with an air admittance valve for venting work?

@brettleybuilt Год назад

Can you email me and I will make you a drawing. brettleybuilt@gmail.com

@dlloytl 10 месяцев назад

Can you make a list of the fittings so i can go to home depot to shop for thiss exact set up?

@brettleybuilt 10 месяцев назад

Not to be lazy, but take a screenshot of the picture and take a picture of the plumbing under the sink and they will be able to help you out. Just make sure you ask an older guy who works in the plumbing department.

@gebwv84 Год назад

I have an old farm house. S trap under kitchen sink with drain going strait downward. No vent pipe there to convert into a P. Only option is demolition of wall to install vent pipe. I may have to just keep the S. No gas smell ever so far. Home inspector missed this and no shut off valves on toilets, or sinks when I bought it. I have installed water shut off valves since. But, probably will have to live with the S under kitchen sink. Also, I am old school septic. No leach bed. Septic run off and gray water all run into old clay tile going off my property and into farm field tiles. How they did it back then

@brettleybuilt Год назад

People have used s traps for years without any real issues. If you don't notice any bad odors you should be fine.

@Oceanbird971 2 месяца назад

Hi Brett new subscriber here I got an s trap in my laundry room inside where the discharge hose goes inside the standpipe are there any helpful tips to replace the pipe immediately I don't want gases coming inside my house I got niece's and nephews

@brettleybuilt 2 месяца назад

Can you email me a picture of the current setup and I will email you a drawing of what I would suggest doing. brettleybuilt@gmail.com

@marklundeberg7006 25 дней назад

1:37 I'm confused... you say the roof vent is for helping the water go down but I had understood that the drains would flush quite well without a vent. The problem is not that too little water goes down, rather it's the opposite, that too much gets sucked down. Also an air actuated valve is something from pneumatic control systems, what you mean to say is air admittance valve.

@brettleybuilt 20 дней назад

Yeah, I messed up the terminology. Too many things on my mind when filming.

@biancarose5180 Год назад

Where can you purchase that valve section?

@brettleybuilt Год назад

Lowe's or home depot. That is where I get pretty much all of my materials for everything.

@GaryYoung-eq1ph Год назад

Can p trap be 2 long or big!? And what can happen.

@brettleybuilt Год назад

Yes. If the water in the trap is too deep, the water going down from the sink might not have enough pressure to push the water in the trap quickly enough and may cause debris to settle and clog in the trap.

@fathead2705 Год назад

Why didn't you just use 2 abs 45's and offset the abs further back into the corner? Then just use the P-trap with no unnecessary fittings? I feel like that would be much cleaner.

@Justme-pe8bt Год назад

Is there a way to install a p-trap in a limited space, a kitchen cabinet 12 inches wide? A plumber replaced the old metal s-trap with a PVC s-trap, and that's it. Now am researching

@brettleybuilt Год назад

Absolutely. You may just have to get creative with the fittings.

@brettleybuilt Год назад

If you email me a picture I could give you some suggestions.

@deepocean3603 4 месяца назад

@@brettleybuilt I have a funky plumbing situation in an old 1970's Maine homestead cabin and would appreciate some DIY advice... I will email you some pictures... Thank you so much for taking the time to make this video.

@Ezunit1991 3 месяца назад

If I have vents in the wall, do I still need to replace my s trap?

@brettleybuilt 3 месяца назад

If it has properly worked for years, you can decide if it needs to be changed. If you occasionally get sewer smells aroud the sink, then it needs to be changed. How the trap is vented doesn't matter as much if the water draining is causing enough suction to draw water out of the s trap.

@Wilburn2020 3 месяца назад

Is it possible to get a list of pipes used?

@brettleybuilt 3 месяца назад

Your situation is probably going to be a bit different. I would take a picture of your set up now and ask an old guy at Lowe's or Home Depot what you need.

@anthonyboyes7225 6 месяцев назад

What Air Actuated Valve did you use for this project?

@brettleybuilt 6 месяцев назад

I misspoke in the video, it is called an air admittance valve. I bought it at Lowe's. It is an Oatey brand valve.

@hippo-potamus 6 месяцев назад

Well finally getting around to replacing these and Im totally lost as to what the parts I need to buy are called. You have both pvc glue pipes and other pipes that have plastic nuts. What those are called nobody fukn knows. I really wish you had a parts list.

@brettleybuilt 6 месяцев назад

Email me and I will help you out. brettleybuilt@gmail.com

@shyofthemoon1175 Год назад

I'm having a real dilemma. My husband and I just bought our first house. They had the master bathroom sink plumbing going into the floor with what looks like a redneck s trap. But the pipe going from the sink into the s is smaller in diameter than the pipe coming from the floor. So the pipe coming from the sink just sits in the s trap and if the s trap fills with water it spills over into the cabinet below the sink. How would we go about fixing this? My husband is fairly handy and I'm pretty good at solving puzzles, we just don't have the money for a plumber right now and we really need to be able to use our sink....

@brettleybuilt Год назад

Can you email me a picture of the plumbing and I will send you a suggested diagram of what you could do. brettleybuilt@gmail.com