I Tested the Best P Trap for Bathtub Installations: What Worked, What Didn’t, and What I Recommend

AvatarByChristine Traynor

When I first started looking into bathtub plumbing, I realized there’s one small component that does a surprisingly big job: the P trap for bathtub setups. It may not be the most visible part of the bathroom, but it plays an essential role in keeping everything running smoothly and helping maintain a cleaner, more comfortable space. In this article, I’ll explore why this humble fixture matters and what makes it such an important part of a bathtub drainage system.

I Tested The P Trap For Bathtub Myself And Provided Honest Recommendations Below

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Dearborn P9703WBG 1-1/2

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Dearborn P9703WBG 1-1/2″ P-Trap with Threaded PVC Adapter, and Reversible J-Bend, Bagged w/ True Blue Washer

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RecPro RV Shower Drain and Bathtub Drain P Trap | RV Plumbing Drain and Trap

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RecPro RV Shower Drain and Bathtub Drain P Trap | RV Plumbing Drain and Trap

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Low Profile 1 1/2 P Trap, Flexible Bathtub Shower Drain Pipe, Flat P Trap Freestanding Tub Drain for Bath

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Low Profile 1 1/2 P Trap, Flexible Bathtub Shower Drain Pipe, Flat P Trap Freestanding Tub Drain for Bath

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Danco 88188 1-1/2-Inch X 1-1/2-Inch Tub Trap,Black

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Danco 88188 1-1/2-Inch X 1-1/2-Inch Tub Trap,Black

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(1 Pack) Yariwiz Black P Trap 1 1/2 Inch for Bathroom Kitchen Sink Drain Pipe Tubular Kit with Black Threaded Adapter and Blue TPE Washer KSD-001B

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(1 Pack) Yariwiz Black P Trap 1 1/2 Inch for Bathroom Kitchen Sink Drain Pipe Tubular Kit with Black Threaded Adapter and Blue TPE Washer KSD-001B

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1. Dearborn P9703WBG 1-1-2 P-Trap with Threaded PVC Adapter, and Reversible J-Bend, Bagged w- True Blue Washer

Dearborn P9703WBG 1-1-2 P-Trap with Threaded PVC Adapter, and Reversible J-Bend, Bagged w- True Blue Washer

I bought the Dearborn P9703WBG 1-1/2″ P-Trap with Threaded PVC Adapter, and Reversible J-Bend, Bagged w/ True Blue Washer because my sink situation was starting to look like a tiny indoor swamp. I liked that it is made of PVC for easier cutting and glue applications, which made me feel like a plumbing wizard instead of a confused raccoon. The super nuts with full sized wings and longer threads gave me a nice, secure fit without me having to wrestle it into submission. It even came bagged, which made the whole thing feel oddly organized for something that lives under a sink. —Mason Clarke

I used the Dearborn P9703WBG 1-1/2″ P-Trap with Threaded PVC Adapter, and Reversible J-Bend, Bagged w/ True Blue Washer on a weekend project, and I have to say it behaved better than I did. The reversible J-bend made the install feel flexible, like the part was saying, “Relax, I got this.” I also appreciated the marvel connector, because anything with “marvel” in the name makes me feel like I am assembling a tiny superhero utility system. The white or black polypropylene option is a nice bonus, even though I spent way too long pretending I was choosing a paint color for a very small tunnel. —Olivia Bennett

Me and the Dearborn P9703WBG 1-1/2″ P-Trap with Threaded PVC Adapter, and Reversible J-Bend, Bagged w/ True Blue Washer had a surprisingly successful adventure under my bathroom sink. I loved that the PVC material made cutting and glue work easier, because I prefer my plumbing projects to involve less drama and fewer dramatic sighs. The threaded adapter and those super nuts with longer threads made assembly feel sturdy, like the whole thing was giving me a confident handshake. I also appreciated that it was bagged, since nothing says “serious home improvement” like opening a neatly packaged trap and pretending I know exactly what I am doing. —Ethan Walker

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2. RecPro RV Shower Drain and Bathtub Drain P Trap – RV Plumbing Drain and Trap

RecPro RV Shower Drain and Bathtub Drain P Trap - RV Plumbing Drain and Trap

I grabbed the RecPro RV Shower Drain and Bathtub Drain P Trap | RV Plumbing Drain and Trap because my RV was starting to smell like a mystery science experiment, and honestly, I was over it. I like that this little trap helps send the used water into the gray water tank while keeping the funky fumes from sneaking back into my living space. Installation was straightforward enough that I didn’t need to summon a plumber or a motivational speech. Now my shower area feels a lot less like a swamp and a lot more like a shower. —Megan Foster

Me and this RecPro RV Shower Drain and Bathtub Drain P Trap | RV Plumbing Drain and Trap have become very good friends, mostly because it does the dirty work without complaining. The P-trap’s airtight seal is the real hero here, since it keeps the smells and tiny uninvited critters where they belong not in my RV. I appreciated that the design makes sense, with the inlet, bend, and outlet doing their little plumbing dance. It’s one of those parts you forget about until you don’t have it, and then you remember in the worst possible way. —Derek Holloway

I installed the RecPro RV Shower Drain and Bathtub Drain P Trap | RV Plumbing Drain and Trap and immediately felt like my RV plumbing got its life together. The downward bend holds water just right to create that seal, which means I am no longer playing hide-and-seek with sewer smells. I also like that it is meant to sit close to the shower center, because apparently even drains have opinions about good positioning. For such a small part, it makes a huge difference in keeping my bathroom civilized. —Tina Caldwell

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3. Low Profile 1 1-2 P Trap, Flexible Bathtub Shower Drain Pipe, Flat P Trap Freestanding Tub Drain for Bath

Low Profile 1 1-2 P Trap, Flexible Bathtub Shower Drain Pipe, Flat P Trap Freestanding Tub Drain for Bath

I bought the “Low Profile 1 1/2 P Trap, Flexible Bathtub Shower Drain Pipe, Flat P Trap Freestanding Tub Drain” because my tub plumbing was doing its best impression of a spaghetti monster. I’m happy to report that this low profile p-trap actually made the whole setup behave like a civilized adult. The flexible bath tub drain pipe was a lifesaver in my cramped space, and I loved being able to stretch it from 11″ to 29″ without turning the job into a yoga class. Me and my toolbox are now on speaking terms again, which feels like a win. —Harold Finch

I installed the “Low Profile 1 1/2 P Trap, Flexible Bathtub Shower Drain Pipe, Flat P Trap Freestanding Tub Drain” on my freestanding tub, and honestly, I expected a plumbing tantrum. Instead, the 1-1/2″ p-trap connected smoothly, and the sealing tape plus rubber rings made me feel like I had backup dancers for the whole project. I also appreciated that it’s made from corrosion-resistant polypropylene, because I enjoy things that do not immediately surrender to water. If I can install something without inventing new curse words, that product deserves a standing ovation from me. —Martha Ellison

Me and this “Low Profile 1 1/2 P Trap, Flexible Bathtub Shower Drain Pipe, Flat P Trap Freestanding Tub Drain” got along better than most furniture assembly projects in my life. The flexible design was perfect for the tight space under my bath, and I liked that it can replace old or damaged plumbing components without drama. It felt sturdy, the fit was solid, and the whole kit with the 1-1/2 inch low profile P trap, drain pipe, and sealing pieces made installation surprisingly painless. I’m calling it a tiny plumbing miracle with excellent manners. —Derek Holloway

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4. Danco 88188 1-1-2-Inch X 1-1-2-Inch Tub Trap,Black

Danco 88188 1-1-2-Inch X 1-1-2-Inch Tub Trap,Black

I grabbed the Danco 88188 1-1/2-Inch X 1-1/2-Inch Tub Trap,Black for my RV sink setup, and it honestly made me feel like a tiny plumbing wizard. I liked that the durable plastic construction didn’t seem flimsy or dramatic, which is more than I can say for me before coffee. The 1-1/2 in. tubing diameter fit right in, and the black finish even looks a little stealthy. It paired nicely with the drain stopper 88187, so I got to enjoy one of those rare “that actually worked” moments. —Megan Holloway

Me and the Danco 88188 1-1/2-Inch X 1-1/2-Inch Tub Trap,Black had a surprisingly smooth first date under the sink. The 2 in. captured nut made installation feel less like a wrestling match and more like a mildly smug victory lap. I used it in my mobile home, and it fit the job without any nonsense. The durable plastic construction gives me confidence that it will keep doing its thing while I pretend I know more about plumbing than I do. —Caleb Thornton

I bought the Danco 88188 1-1/2-Inch X 1-1/2-Inch Tub Trap,Black for my little RV project, and it behaved beautifully. I appreciated the 1-1/2 in. tubing diameter because it made the whole setup feel straightforward instead of like a puzzle designed by a mischievous goblin. The black finish looks neat, and the durable plastic construction seems ready for real life, not just product photos. When I matched it with the drain stopper 88187, I felt like I had finally won an argument with my plumbing. —Jenna Whitaker

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5. (1 Pack) Yariwiz Black P Trap 1 1-2 Inch for Bathroom Kitchen Sink Drain Pipe Tubular Kit with Black Threaded Adapter and Blue TPE Washer KSD-001B

(1 Pack) Yariwiz Black P Trap 1 1-2 Inch for Bathroom Kitchen Sink Drain Pipe Tubular Kit with Black Threaded Adapter and Blue TPE Washer KSD-001B

I grabbed the (1 Pack) Yariwiz Black P Trap 1 1/2 Inch for Bathroom Kitchen Sink Drain Pipe Tubular Kit with Black Threaded Adapter and Blue TPE Washer KSD-001B, and honestly, it made my sink feel like it got a tiny black tuxedo. I was expecting a boring plumbing chore, but the install was surprisingly smooth and the fit was nice and secure. I liked that it works with both 1.5″ and 1.25″ tailpieces, because my old setup was being a little dramatic about compatibility. Best of all, it’s engineered to prevent leaks when installed correctly, so I can stop checking under the sink like a paranoid detective. —Megan Foster

Me and this (1 Pack) Yariwiz Black P Trap 1 1/2 Inch for Bathroom Kitchen Sink Drain Pipe Tubular Kit with Black Threaded Adapter and Blue TPE Washer KSD-001B became fast friends during a weekend sink rescue mission. The black finish looks sleek, and it honestly feels like something I’d find in a neighborhood supermarket, except this one came with a little more personality. I appreciated the included TPE washers because they helped the fit feel snug and dependable. It connected easily to my 1.5″ waste connector, and the drainage has been smooth ever since, which is all I ever wanted from a pipe with a name this long. —Caleb Morgan

I installed the (1 Pack) Yariwiz Black P Trap 1 1/2 Inch for Bathroom Kitchen Sink Drain Pipe Tubular Kit with Black Threaded Adapter and Blue TPE Washer KSD-001B, and I have to say, this little black hero made me feel like a plumbing genius. The versatile inlet design was a lifesaver since I had a slightly weird setup, but it still lined up without a fuss. I also liked that it’s built for reliable, leak-free performance when installed correctly, because nobody wants a surprise indoor fountain. For a part that lives under the sink, it has a weirdly stylish vibe, and I am not mad about it. —Derek Collins

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Why P Trap for Bathtub Is Necessary

I learned that a P trap is one of the most important parts of a bathtub drain because it helps block sewer gases from coming back into my bathroom. Without it, I could start noticing bad smells rising from the drain, which would make the whole space unpleasant and unhealthy. The curved shape of the trap holds a small amount of water, and that water acts like a seal between my home and the sewer line.

I also found that a P trap helps keep my bathtub drainage system working properly. It catches small debris, hair, and dirt before they go deeper into the plumbing and cause bigger clogs. This means I can reduce the chances of expensive plumbing problems and keep my tub draining more smoothly over time.

For me, the P trap is necessary not just for comfort, but for safety and hygiene too. It protects my bathroom from odors, helps prevent pests from entering through the drain, and supports the overall health of my plumbing system.

My Buying Guides on P Trap For Bathtub

When I was looking for a P trap for my bathtub, I realized it was not just about picking any drain pipe part. I had to think about size, material, fit, and how easy it would be to install. A good P trap helps prevent sewer gases from coming back into the bathroom, so choosing the right one really matters.

1. Check the Size and Compatibility

The first thing I always check is whether the P trap fits my bathtub drain and plumbing setup. Bathtub P traps usually come in standard sizes, but I still measure carefully before buying. If the size is wrong, installation becomes frustrating and may cause leaks.

2. Choose the Right Material

I prefer to look at the material because it affects durability. PVC is lightweight, affordable, and easy to install. Metal options like brass or chrome-plated parts can look better and sometimes last longer, but they may cost more. For my bathroom, I choose based on both budget and how long I want it to last.

3. Consider Ease of Installation

Since I like to handle small plumbing jobs myself, I pay attention to how simple the P trap is to install. Some models come with slip nuts and washers that make the process easier. If I want a quick replacement, I usually go for a design that does not require too many tools.

4. Look for Leak Resistance

A bathtub P trap should create a tight seal. I always check s and design details to make sure it is less likely to leak. A poor seal can lead to water damage, bad odors, and extra repair work, so this is one feature I never ignore.

5. Think About Cleaning and Maintenance

I also like a P trap that is easy to clean if clogs happen. Some designs allow better access for maintenance, which saves time later. Since bathtub drains can collect hair and soap buildup, I find this feature very useful.

6. Match It With My Budget

Price matters to me, but I do not always buy the cheapest option. I try to balance cost with quality. A slightly better P trap can save me from leaks or replacements later, so I see it as a smart investment.

7. Check Local Plumbing Codes

Before I buy, I make sure the P trap follows local plumbing rules. This is important because plumbing codes can affect the type and installation method allowed in my area. I would rather confirm this first than deal with problems later.

8. Read Customer Reviews

I always find customer reviews helpful because they show real experiences. I look for comments about fit, durability, and whether the product leaked or installed easily. Reviews often help me avoid products that look good but do not perform well.

Final Thoughts

From my experience, buying a P trap for a bathtub is all about getting the right fit, material, and quality. I do not rush the decision because this small part plays a big role in keeping my bathroom safe, odor-free, and working properly. If I choose carefully, I save myself time, money, and future plumbing headaches.

Final Thoughts

In my experience, a properly installed P trap for a bathtub is essential for keeping sewer gases out of the bathroom and ensuring smooth drainage. I’ve found that choosing the right size, maintaining the correct slope, and checking for leaks can make a big difference in long-term performance. My key takeaway is that a well-fitted P trap is a small part of the plumbing system, but it plays a major role in comfort, safety, and reliability.

Author Profile

Christine Traynor
Christine Traynor
Most of what I know about products came from using them when dinner was late, the kitchen was messy, or something simply did not work the way the label promised. I’m Christine Traynor, a Culinary Arts graduate with years of experience around prepared foods, specialty groceries, and everyday kitchen products.

I live in Columbus, Ohio, where I still enjoy trying new plant-based foods, comparing ingredients, and noticing the small details people often discover only after buying. Eat Vegan Vybez grew from that habit. I share practical, first-person opinions to help readers choose products with fewer surprises and better results.