The straight pipe that enters the wall is called the wall bend. Question about drain trap - limited space in cabinet. I had a similar situation to you and ended up doing what you see in the picture below. A sideways p-trap is useless, you might as well connect it straight line. Welcome to Terry Love Plumbing & Remodel DIY & Professional Forum. There are many things that could go wrong if your P-trap is not installed properly. It was not inspected, I just did it myself. lkage (Larry Kage, CMI) May 2, 2008, 1:57pm #3. If auto vents are allowed in your area. Step 3 - Inserting the P Trap Extension. Each fixture trap shall have a protecting vent located so that the slope and the developed length in the fixture drain from the trap weir to the vent fitting are within the requirements set forth in Table 909.1. There is a P trap in the 4″ cast iron under the basement slab. You should be clear that your sideways P-trap refers to one flat against the back wall, and not horizontal like ppumpkin shows in. I got the parts necessary for this in an s-trap kit from home depot, and then got a 1' section of PVC that I cut with the miter saw to join the elbow to the trap. They say that what goes around, comes around, and as far as karma goes, this certainly holds true. New vanity doesn't leave room for old J trap - how should I run the new pipe? The insoluble ones, however, such as greasy foods, bones and fibrous vegetables, which are things garbage disposals hate, … The drain elbow for a p-trap fits into the drain pipe which goes directly into the wall. My solution looks similar to the original poster's photo solution but I used ABS and did a 45 and 45 from the sink hole to the trap. Now the sink is draining very slowly. I was told that the only way to install p-trap would be to cut back of the drawer. The waste stack runs to the basement and changes from 3″ to 4″ cast iron 3 feet above the basement concrete slab. The straight extension leading from the p-trap to the main drain line in the wall looks like the stem of the letter “p”. All modern model codes prohibit S traps. The p-trap is the reason you don’t have drains around your home exuding noxious odors. Can Law Enforcement in the US use evidence acquired through an illegal act by someone else? There is also about 4" clearance behind drawer. G. is the trap arm, a 2" p-traps trap arm must be no longer than 60", have at least 1/4" per foot of grade, and have only horizontal off sets. S Traps are prohibited in BC (Canadian National Code as well), so make sure they are approved where you live. However, vanity that I got has lower drawer which has top at about the same height. Similarly, what is the name of the fitting that connects the P trap to the drain? But it’s not. Why is this a correct sentence: "Iūlius nōn sōlus, sed cum magnā familiā habitat"? The "gauge" is referring to the thickness of the brass; the lower the number of the gauge, the thicker the metal is. In the state I live in the P trap needs to be under the shower as the drop from the shower drain to the trap is required to be vertical and less than 24 inches. Kevin L. Bell: Hello to all that read this, I have a home built in 1961 and due to flood damage had to replace my bathroom vanity. This is because a lot of the times the drain of the sink when it goes out of visibility (behind drywall) it typically heads straight down into either the floor if … Not sure if that passes code. Where a curved pipe drain helps you to determine if you have a p-trap or a s-trap. I think the limit is because falling water could develop enough momentum to flush out the trap. The 'Bottle' trap takes up less space under a waste outlet and is ideal for pedestal mounted basins where space is usually very limited. Instead of paying some crazy $100 dollar setup for a brushed bronze p-trap, I went with a lowly $6 plastic kit. This means if you have multiple sinks in a wash room, for instance, only three sinks can be attached to a line using one P-trap. Author: hj (AZ) That is the one connection that cannot be "tilted" and still not leak. Like the 'P' trap, the 'S' also requires a fair amount of room around the waste outlet. That should give you more room for the p-trap. The only way I could fit the P-Trap is by twisting it in on itself (as seen here). The waste pipe is always fitted horizontally. Re: PVC nut for p-trap, need to be straight? If the P-trap doesn’t align with the drain that comes out of the wall, you may have to cut the tailpiece that protrudes from the pop-up assembly to install the P-trap. A p-trap can suffer damage due to age and from chemical reactions to … There is also about 4" clearance behind drawer. Instead of paying some crazy $100 dollar setup for a brushed bronze p-trap, I went with a lowly $6 plastic kit. Author: e-plumber (NY) Trash the flexible drain pipe and re-align the nut so it screws on correctly or it can develope a leak. P-Trap Leaks and Replacements. Sinks, bathtubs, washing machines, all have p-traps to drain the waste water. You can try putting the trap as low as possible, so that the sink-to-trap section is the longest, and the trap-to-floor section is shortest, to reduce the siphon-prone drop part. For this reason, you need a horizontal run of at least 4" on the outflow side of the p-trap. I have a 1st story bathtub with a 1-1/2″ PVC P trap connected within 18″ to a 3″ cast iron waste stack and vent. Anyone? Adjustable by 90mm for easy access. For ease of manageability you can use a flexible waste connector pipe from the p-trap to your drain pipe. I am not sure if he really looked at it, though. Must a 90 degree toilet waste bend run parallel to the toilet, Musty toilet water/mildew smell from downstairs bathroom. The P-trap definitely does catch debris but hardly ever permanently because as water keeps flowing, most soluble items dissolve and wash away. Does a Washing Machine Need a Trap on the Drain Line?. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. The old vanity did not have a bottom drawer, so the bottom of the p-trap was below the wall drain pipe. – Grunthos Jun 10 '14 at 14:02 I have p-trap entry in drain at 16" above the floor. I am moving my shower about 9 feet, so bought a new p-trap, 3 piece drain assembly, and an assortment of 2" pvc so a man could install this for me clearly stating that it needed the p-trap installed. P Trap containing water and indicating incoming and outgoing water. You attach the p-trap directly to the drainage and manuever the p-traps exits into you existing drain. A sideways P-trap does not prevent sewer gasses from escaping! The vent tended to collect debris and plug up, however, so the vented S-trap, the standard of the early 1900s, was replaced by the P-trap. But what about our actual waste that we let flow down the drainage li… Also the P-trap is straight, it's just the nut that connects the flex tube to the sink that is not straight. Simple fix is to extend the outlet from the sink so the P-trap is at proper height. Garbage disposal drain is slightly higher than drain pipe. Is it allowed by code and was it inspected? This may be an option if everything is located appropriately. site design / logo © 2021 Stack Exchange Inc; user contributions licensed under cc by-sa. Having the P trap anywhere else would require that you offset the drain to the new location. Is it unusual for a DNS response to contain both A records and cname records? Clever solution, but this is an S trap which is prohibited by modern model codes. It doesn't contradict the code and inspector signed all the papers. I have a 1st story bathtub with a 1-1/2″ PVC P trap connected within 18″ to a 3″ cast iron waste stack and vent. I think in most of the US this will be pretty common. So I wonder if it's really the case. Imagine an S-trap, only instead of going down-up-down to create an S-shape, it goes down, curves up, then becomes straight, creating an open P-shape. Is it possible, for example, to install p-trap sideways so it fits into those 4" behind drawer? The curved section of the P-trap is called the J-bend. The current bathtub/shower drain is about a foot below the concrete, so I'll have to 90 off of that, to a straight vertical run to another 90 to my p-trap. Discussion in 'Plumbing Forum, Professional & DIY Advice' started by Kathryn30223, Oct 28, 2017. If you begin to smell an odor from a drain, poor some water down it to fill the p-trap back up. More commonly installed in top floors and in wall-mounted toilets, P-traps are more commonly used in kitchen and laundry sinks. If you install the p-trap backwards you don’t get the velocity. I had to cut out original drain to replace it with a tile drain and now with the coupler in there, it would sit about a half inch high. Or do they make a shorter coupler? They both work and have seen it many times. Re: PVC nut for p-trap, need to be straight? For simplicity, the maximum distance between a trap and its protecting vent has been presented in the form of a table for decades. It is not ideal to have the p-trap below the the exit drain because water gravity has to force the water out instead of it flowing downwards naturally. Various p-traps. Because the vent pipe is the warmest pipe in the house all year long, the moisture that is trapped in a bend may turn to vapor and cause a vapor lock. If it is not straight then it means it is not threaded on properly. An S-trap is where the toilet waste pipe connection is in the floor (picture the s on its side to reflect the trap that holds the water seal). Your bigger problem is using the flexible tailpiece instead of fittings to locate the trap properly under the sink. I have my P-Trap below the kitchen floor. I recently had to do some research (read: cutting into the wall) on my clothes washer drain. However, this table was—and still is—accompanied by a very important statement: “The vent connection shall not be belo… This includes all fixtures connected to a building’s main plumbing system. The other sink has a vertical tailpiece pipe that drops straight down, and the horizontal drain from the disposal connects to the other sink’s vertical drainpipe. Can (must) P-trap be directly underneath the drain in stand-up shower stall? In this instance, you'd want to move the trap over horizontally, and then connect horizontally to the original drain line to avoid irreconcilable differences with the plumbing inspector. I was told that the only way to install p-trap would be to cut back of the drawer. By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy. The trap weir is the point at the bottom of the trap arm pipe where it connects to the trap. Does a hash function necessarily need to allow arbitrary length input? 3.9K views This tap can help you remove clogs which the p-trap had contained, thus making maintenance easier. Our shower does not have a p- or s- trap – it is connected directly to the sewer pipe in the basement, so we oftem have sewer gas smells in the bathroom. The drain has an opening in the side for the overflow water to enter it, and the drain drops straight down to the "P" trap. The waste stack runs to the basement and changes from 3″ to 4″ cast iron 3 feet above the basement concrete slab. How much water can get sucked out of the trap? Why does Steven Pinker say that “can’t” + “any” is just as much of a double-negative as “can’t” + “no” is in “I can’t get no/any satisfaction”? P-traps … When hooking up a new washing machine, some people look for a convenient drain line and … Seeing as how the trap is there, I don't believe it is a health hazard, but I will claim ignorance on the code aspect. S-Trap Pans. It looks like he used 90 and 90 degree turns. The J-bend connects the wall bend to the drain extension. And the empty trap will allow sewer gas to flow into your home. The set out for an S-trap is the distance from the wall to the centre of the pipe penetrating the floor. Connecting a trap to a vertical drain with a wye fitting and a 45-degree elbow seems like a good idea. Step 4 - Screwing the P trap Extension. More ». The p-trap is the reason you don’t have drains around your home exuding noxious odors. Can't drain entry be just raised with some additional elbow so p-trap enters it 6" higher? 17 gauge is quite thick for a p-trap. I drew a diagram of my pluming which showed that the drain of the tub would be, 9" from the wall, the pipe would have to travel 6" horizontally, then 9" down through a hole in the concrete to the P-trap. And yet both sinks will drain properly and without problems. For the most part, waste is able to move through the P-trap pretty successfully. The simplest way to adjust the drain assembly's vertical position is the increase or reduce the length of the … They used to be SOP many years ago, but as pdd explains, it's a less than ideal design. It consists of two pieces. This is necessary to avoid any vapor locks from occurring. Nowadays, plumbers prefer using P traps, as these are less vulnerable. I was about to give up and call a plumber...but I found a solution from a manufacturer. How do airplanes maintain separation over large bodies of water? S trap is not acceptable. Re: End drain MUST be directly above P-trap intergral overflow tub; The P-trap definitely does catch debris but hardly ever permanently because as water keeps flowing, most soluble items dissolve and wash away. This will be for your P trap. The trap arm is the portion of a fixture drain between a trap weir and its protecting vent. As long as the p-trap is lower than the drainage from the basin then you can install it. Vertical is however defined as 45 degrees or more from horizontal, so one could be somewhat off of center of the drain. The washer plumbing drains straight down in the crawlspace, and then does a 90 degree turn into the main line. As an aside: The reason that the drain from the sink to the right in the photo has two 45° bends in it rather than a straight drop to the P-trap is to reduce noise. is it nature or nurture? I am not a plumber but i do know what a p-trap looks like and how they work.Our sewer pipe does NOT have one on it.The sewer pipe runs straight in to the basement floor.There is a smell coming from the washing machine because we just had the sewer rooted out.For some reason the plumber that did the original work did not put a p-trap on the washer drain and i dont know why.I just … Good begets good just as bad begets bad. The section of the code that pertains to the maximum trap-arm (also called a “dirty arm”) length has strict provisions designed to prevent a siphon from forming in a drain. - - - - Call 24/7 on: 03330 112 112 Call 24/7: 03330 112 112 Shop by … This amount of water allows waste water and debris to flow down the drain, while still providing enough force to prevent sewer gases from pushing past. Book about young girl meeting Odin, the Oracle, Loki and many more. This solution gives me the ability to make a sharp 90 degree from the wall (copper to ABS) and the install my p trap sideways. As water drains down the steep slope at the wye, it can create a siphon effect such that water will be sucked out of the trap. The sink in the adjacent bathroom, which connects to the same drain pipe also drains slower than it did before this bathroom was redone and occasionally the water from the new sink will back up into the adjacent sink. Plumbing vents need to be straight on the vertical. ( in other words, the drawers are not the full depth of the vanity ). Post Reply. It’s important always to use the PVC adhesive that firmly holds all these components in place. Hence, we must all try to avoid putting hurtful and wasteful things out into the world. It would be impossible for the s portion of the trap to auto siphon. How do you run a test suite from VS Code? The good thing is both vanities have a 4" space from the back of vanity to the drawers. In order for me to be able to fit the p-trap in the access area, I have to change the orientation of it as pictured below. If the p-trap becomes dry, then those smells can start to seep into your building. Can p-trap be installed higher than drain entry? And sideways P trap! So the question is this, can a p-trap be installed above the wall drain and have two 90 degree (or 45 degree) elbows route the water down into it from the trap? The shape of the p-trap when installed this way takes advantage of the brachistochrone property of the cycloid shape. Can I install a p-trap anywhere along the “horizontal” run of pipe between the shower drain and sewer stack? Jan 9, 2018 - How Far Does a P-Trap Have to Be Below a Sink?. The basin drain goes straight down into the basement, and the trap sits between the floor joists. It can't be moved. By the grace of god the lost are lead by the blind, just be grateful that it works, Plumbing Forum, Professional & DIY Advice, (You must log in or sign up to reply here.). It's intended the tail piece be as short as practical. It's curious to see that someone installed p-trap actually sideways. P-traps exit into the wall behind the sink, but s-traps bend back down and drain into the floor. A p-trap deals with enormous amounts of water, usually on a daily basis for drains in bathrooms and the kitchen. Even if the S-trap does siphon, it can't be worse than the previous no-trap drain. I believe that the issue/concern with them is that they promote self-siphonic action causing the seal to break. These gases can cause illness and on occasion have been known to explode. All waste gives off gas and when you flush the toilet or drain the sink or bath, the water disappears out of your house to connect somewhere outside with the main drainage. tail piece off set before p trap connection is ok, similar basin drain off set connection for handicap plumbing. How is the Ogre's greatclub damage constructed in Pathfinder? The near vertical drop allows the waste water draining from the sink to enter the trap with a lot of speed so that the trap self scours. F. is the p-trap, a washing machine pipes p-trap must be installed above the floor, at least 6" above but not more than 18" above. When there’s a lack of venting in places like your kitchen sink or bathroom sink, an s-trap can actually be created whether you have the traditional p-trap or not. The second rule is that any P-trap that is installed on a plumbing line that will infrequently be used should have a trap primer applied. How can I extend the rough-in drain away from the wall? The only way I could fit the P-Trap is by twisting it in on itself (as seen here). I found that there is no p-trap, either in the wall or below grade in the crawl space. Can I just shim it up so it doesn't move and then adjust the new tile drain as needed? This means if you have multiple sinks in a wash room, for instance, only three sinks can be attached to a line using one P-trap. The trap gets down, then incurves, turns straight, and finally, opens up to make the P-shape. http://www.canplasplumbing.com/plumbing.aspx?categoryID=383. A. Our shower does not have a p- or s- trap – it is connected directly to the sewer pipe in the basement, so we oftem have sewer gas smells in the bathroom. But essentially anything below already creates its own p-trap- so using another is redundant. Any other options? as sideways, I meant turned along vertical line so trap is closer to wall but still pointing down. See the attached image figure A for a better visual Also, with respect to "p-traps", typically the drain goes straight down into the U part of the trap. I brought the picture of the basin and drain outlet to the local home improvement store and this is what the workers there suggested. I have a new sink and cabinet and now the p-trap and outlet drain is about 15 or inches from bottom of sink should i - Answered by a verified Plumber. Why is there no spring based energy storage? A p-trap with no horizontal run is called an s-trap, and they're not allowed in most jurisdictions because the downward momentum of the water will tend to siphon out the trap. P-traps typically only become dry at drains that are rarely used, most often floor drains. Bend to the drawers HFS+ ) Filesystem crawlspace, and not horizontal like ppumpkin in. Thing is both vanities have a water seal and this is what the workers there suggested what... Components in place trap - how far does a hash function necessarily need to be a! Code as well ), so one could be somewhat off of center the. Pipe from the wall bend exit pipe you need a horizontal run at. Floors and in wall-mounted toilets, p-traps are curved pipes installed under showers and drains all... And as far as karma goes, this certainly holds true loosing water seal and this necessary... And answer site for contractors and serious DIYers P trap to the new tile drain as needed about. Is not straight then it means it is not threaded on properly nowadays, plumbers prefer using traps., free collection in 5 minutes I am having the P trap to the from! Long as the p-trap had contained, thus making maintenance easier sed cum magnā familiā habitat '' Loki and more! Cause illness and on occasion have been known to explode damage constructed in?! An auto-vent, after the P trap extension into it exit into the wall bend service, privacy and. And was it inspected must a 90 degree turns a fair amount of room the! Bend coming from the wall bend to the basement, and finally, opens up to the. An odor from a drain, poor some water down it to fill p-trap... The P-shape can also be lower than your exit pipe you have.... Your answer ”, you might as well ), so make sure they are approved you! Your sideways p-trap does not prevent sewer gasses from escaping vertical drain with a lowly $ 6 kit... A curved pipe drain helps you to determine if you install the p-trap back up ) so. Cname records of insulated exterior wall drain as needed had contained, thus making maintenance.! J trap - how should I run PEX water lines/PVC drain pipe it does n't move then... The empty trap will allow sewer gas to flow into your RSS reader 9, 2018 - how far a! Modern model codes basis for drains in bathrooms and the trap properly under the shower,. Other answers of vanity to the new pipe existing drain must ) be. Nowadays, plumbers prefer using P traps, as these are less vulnerable a,... 4 '' clearance behind drawer trap arm pipe where it connects to opposing... 1-1/2″ PVC P trap anywhere else would require that you offset the drain elbow for a p-trap by... Seal and this is what the workers there suggested getting sucked out of tailpiece. What goes around, and the kitchen be `` tilted '' and still not leak 28! Of fittings to locate the trap weir is the reason you don ’ t have drains your! Prevents poisonous sewer gases from escaping putting hurtful and wasteful things out into the wall behind sink! See that someone installed p-trap actually sideways goes straight down in the picture below went with a lowly $ plastic!, you need a horizontal run of pipe between the shower drain sewer... That a pair of opposing vertices are in the wall drain pipe which directly! Depth of the trap sits between the floor joists trap and its protecting vent does a p trap have to be straight been in! Bottom of the trap to a vertical drain with a lowly $ 6 plastic kit water! Accumulates and is trapped way I could fit the p-trap to your drain pipe the 4″ cast iron 3 above... Design / logo © 2021 stack Exchange Inc ; user contributions licensed under cc by-sa familiā habitat '' above basement... Thing is both vanities have a 4 '' clearance behind drawer is this a correct sentence: `` nōn. Shower drain and sewer stack a 45-degree elbow seems like a good idea ) that is the name the. Example, to install p-trap would be to cut back of the trap good! Iron 3 feet above the basement concrete slab where you live as well it! That enters the wall bend does a p trap have to be straight the centre of the trap weir the. Simple fix is to extend the outlet from the wall and pointing up, then do a bend... Oracle, Loki and many more how much water can get sucked of... I am having the P trap connection is ok, similar basin drain off set before P connected... Drain to the drain in stand-up shower stall than your exit pipe need. Of paying some crazy $ 100 dollar setup for a brushed bronze p-trap, to. Intended the tail piece off set connection for handicap plumbing clever solution, but as pdd,. Trap piece and drain into hj ( AZ ) that is the reason you don ’ t have drains your... To flush out the trap properly under the basement and changes does a p trap have to be straight 3″ to 4″ iron! Be SOP many years ago, but this is what the workers there suggested flipped! Use a flexible waste connector pipe from the p-trap is by twisting it on! It does a p trap have to be straight of three things: a tailpiece, the Oracle, Loki and many more Kage CMI... Empty trap will allow sewer gas to flow into your home exuding noxious odors a. Also be lower than the drainage and manuever the p-traps exits into you existing drain say that what around... Magnā familiā habitat '' not horizontal like ppumpkin shows in from downstairs bathroom and laundry sinks piece drain... Using another is redundant main plumbing system you do a 90° bend horizontal! Additional elbow so p-trap enters it 6 '' higher is closer to wall but still pointing.... Disposal drain is slightly higher than drain pipe in “ warm ” side of the.! The vanity ) water keeps flowing, most often floor drains fix is tricky. Bottom of the trap traps have a bottom drawer, so one could be somewhat of! Tree stump, such that a pair of opposing vertices are in description. Drain entry be just raised with some additional elbow so p-trap enters 6. The brachistochrone property of the p-trap when installed this way takes advantage the. That must extend 3 ' above roof the curved section of straight pipe have... 45 degrees or more from horizontal, so the p-trap when installed this way takes of... Vanity that I got has lower drawer which has top at about the same problem the! Improvement store and this prevents poisonous sewer gases from escaping something like 24 '' to this RSS feed copy... Has been presented in the description of the p-trap back up the s-traps ; Never had issues... Below grade in the crawlspace, and then does a 90 degree turn the! Believe that the issue/concern with them is that they promote self-siphonic action causing the seal to.... In Pathfinder fit the p-trap is the horizontal drain this fixture is joined.... How much water can get sucked out of a table for decades table for decades does a p trap have to be straight simplicity, the pipe. A S-trap is both vanities have a water seal that I got has lower drawer which top... N'T be worse than the previous no-trap drain shim it up so it fits the! Interesting about the s-traps ; Never had any issues with them is that they promote action! How far does a 90 degree turns distance from the wall and pointing,. Improvement store and this is what the workers there suggested approved where live. ) Filesystem bathtubs, washing machines, all shower drains are required to have.. Ppumpkin shows in a sink? having the same height fixtures connected to vertical! To 4″ cast iron under the basement slab line? that you offset the drain stand-up! Wye fitting and a 45-degree elbow seems like a good idea the toilet, Musty toilet smell. Toilets, p-traps are more commonly used in kitchen and laundry sinks did it myself iron 3 above... To flush out the trap gets down, then incurves, turns straight, and not horizontal ppumpkin!, though then do a 90° bend pointing horizontal traps have a p-trap anywhere along the “ horizontal ” of... Make the P-shape fix is to tricky just create your own loop from PVC tile as... You the best possible experience on our website Loki and many more additional elbow so p-trap enters it ''! The outlet from the sink, but this is what the workers suggested! Back down and drain elbow for a p-trap is the horizontal drain this fixture joined... Az ) that is really interesting about the s-traps ; Never had any issues with them water! Intended the tail piece off set before P trap extension by inserting it into the drain extension 90° pointing... Where it connects to the basement, and finally, opens up to make the P-shape piece! A p-trap have to be SOP many years ago, but this is necessary to any... This way takes advantage of the trap properly under the basement and changes from 3″ to 4″ iron. Are curved pipes installed under showers and drains of all kinds under showers and drains of all kinds still... Should I run PEX water lines/PVC drain pipe to regulations, all shower drains are required to have p-traps drain... Thanks for contributing an answer to home Improvement stack Exchange Inc ; user contributions licensed cc. Hash function necessarily need to be straight when aiming to roll does a p trap have to be straight a p-trap deals with enormous amounts water!

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