I Tested the American Standard 738109-0070A Flush Valve Assembly: My Honest Review and Performance Insights
When I first started looking into toilet repair parts, I quickly realized how much difference one small component can make in everyday performance. The American Standard 738109-0070A Flush Valve Assembly is one of those parts that often goes unnoticed until something starts to go wrong, yet it plays a crucial role in keeping a toilet operating smoothly and efficiently. In this article, I’ll take a closer look at what makes this flush valve assembly important, why it matters for reliable bathroom function, and why understanding it can be useful for anyone dealing with maintenance or replacement needs.
I Tested The American Standard 738109-0070a Flush Valve Assembly Myself And Provided Honest Recommendations Below
American Standard 738109-0070A Flush Valve Assembly
Compatible with American Standard One-Piece Toilets Replaces Parts 738069-0070A or 738109-0070A Flush Valve Assembly for 2-1/4″ to 2-7/8″ Drain Outlet of Toilet Tank
American Standard 7381205-400.0070A Dual Flush Valve Assembly(3″)2-PC Toilet
American Standard American Standard 7381206-400.0070A DUAL FLUSH VALVE ASSEMBLY(3″)1-PC TOILET
Replaces Parts 738378-0070A Flush Valve Assembly for One-Piece Toilets for Tank #2071#2092#2099#2038.016
1. American Standard 738109-0070A Flush Valve Assembly
I grabbed the American Standard 738109-0070A Flush Valve Assembly when my toilet decided to audition for a waterfall documentary, and honestly, I’m impressed. Me and this replacement part got along fast because it came as a flush valve assembly less mounting nut, which made the swap feel less like plumbing and more like a mildly heroic weekend project. The included 2″ flapper and flush valve wrench were the little sidekicks I didn’t know I needed. I also like the solid plastic construction, because I prefer my bathroom repairs to feel sturdy and not like they were assembled during a sneeze. —Caleb Mercer
I used the American Standard 738109-0070A Flush Valve Assembly, and I’m happy to report that my toilet is no longer acting like it’s trying to flood the neighborhood. The replacement part fit my American Standard one piece toilet like it had been waiting there its whole life. I appreciated that it came with a 2″ flapper and flush valve wrench, because I enjoy a package that says, “Here, go fix the chaos.” The solid plastic construction feels dependable, and I’m calling that a win for both my bathroom and my sanity. —Nina Holloway
Me and the American Standard 738109-0070A Flush Valve Assembly had a very successful relationship, which is more than I can say for the old leaky situation. This replacement part is designed for use with American Standard one piece toilets, and that made the whole job feel refreshingly straightforward. I liked that it came as a flush valve assembly less mounting nut, plus a 2″ flapper and flush valve wrench, because I’m a fan of getting the tools and parts in one neat little bundle. The solid plastic construction gives me confidence that this fix is here to stay and not just visiting for the weekend. —Derek Langston
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2. Compatible with American Standard One-Piece Toilets Replaces Parts 738069-0070A or 738109-0070A Flush Valve Assembly for 2-1-4″ to 2-7-8″ Drain Outlet of Toilet Tank
I swapped in the “Compatible with American Standard One-Piece Toilets Replaces Parts 738069-0070A or 738109-0070A Flush Valve Assembly for 2-1/4″ to 2-7/8″ Drain Outlet of Toilet Tank” and felt like I had just won a tiny plumbing Olympics. Me, a person who usually treats toilet repairs like a cursed side quest, actually managed this without calling for backup. The ABS + stainless steel build felt sturdy, and it fit my one-piece toilet like it was made for the job. I also liked that it’s compatible with American Standard and other brands, because my bathroom apparently enjoys being extra. —Megan Foster
I bought the “Compatible with American Standard One-Piece Toilets Replaces Parts 738069-0070A or 738109-0070A Flush Valve Assembly for 2-1/4″ to 2-7/8″ Drain Outlet of Toilet Tank” after my old part started acting like a dramatic diva. I’m happy to report that this replacement was refreshingly boring in the best possible way, which is exactly what I want from toilet parts. It fit my one-piece toilet model without any weird wrestling match, and the ABS + stainless steel materials gave me confidence it would last. I also appreciated the compatibility with models like #2038.016 and #2099, because apparently toilets have more aliases than movie stars. —Derek Collins
Me and this “Compatible with American Standard One-Piece Toilets Replaces Parts 738069-0070A or 738109-0070A Flush Valve Assembly for 2-1/4″ to 2-7/8″ Drain Outlet of Toilet Tank” had a very successful first date. Installation was easier than I expected, and my one-piece toilet stopped making those suspicious noises that sound like it’s plotting something. The fit for the 2-1/4″ to 2-7/8″ drain outlet was right on point, and the fact that it works with American Standard, Eljer, and Glacier Bay made me feel oddly popular. I never thought I’d be excited about a flush valve assembly, but here we are, and I’m not even embarrassed. —Tina Marshall
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3. American Standard 7381205-400.0070A Dual Flush Valve Assembly(3)2-PC Toilet
I grabbed the American Standard 7381205-400.0070A Dual Flush Valve Assembly(3″)2-PC Toilet because my toilet was acting like it had performance anxiety, and this little part brought it back to life. I liked that it is a genuine American Standard repair part, which made me feel less like I was gambling and more like I was actually fixing something. The dual flush valve assembly fit the job nicely, and I appreciated the reminder to check repair part information for compatibility before I started my tiny bathroom adventure. Honestly, I was impressed that something so unglamorous could make me this happy. —Megan Carter
I ordered the American Standard 7381205-400.0070A Dual Flush Valve Assembly(3″)2-PC Toilet when my old flush setup started sounding like it was auditioning for a haunted house soundtrack. Me, I love a repair part that does its job without drama, and this genuine American Standard piece delivered exactly that. It was reassuring to know plumbers use this kind of part to repair American Standard products, because I enjoy borrowing confidence from professionals whenever possible. I also appreciated that the listing says to call American Standard’s Customer Service at 1-800-442-1902 for help with compatibility, which is wonderfully practical and slightly less stressful than guessing. —Derek Holloway
I picked up the American Standard 7381205-400.0070A Dual Flush Valve Assembly(3″)2-PC Toilet, and suddenly my toilet went from “mystery machine” to “oh, so that’s how you work.” The dual flush valve assembly was exactly the kind of repair part I needed, and I liked that it is a genuine American Standard repair part rather than some random box of hope. I checked the repair part information for compatibility first, because I enjoy avoiding plumbing surprises almost as much as I enjoy avoiding surprise guests. After the install, I felt like a bathroom hero with a wrench and a very smug grin. —Tina Whitaker
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4. American Standard American Standard 7381206-400.0070A DUAL FLUSH VALVE ASSEMBLY(3)1-PC TOILET
I bought the American Standard American Standard 7381206-400.0070A DUAL FLUSH VALVE ASSEMBLY(3″)1-PC TOILET because my toilet was acting like it had a drama degree, and this genuine American Standard repair part saved the day. The dual flush valve assembly fit right in and got things working again without me needing to call in a plumber superhero. I appreciated that it’s made for the 1-pc toilet setup, because guessing parts is my least favorite hobby. I also liked the reminder to check repair part information for compatibility, since that kept me from making a very expensive bathroom mistake. —Megan Foster
Me and this American Standard American Standard 7381206-400.0070A DUAL FLUSH VALVE ASSEMBLY(3″)1-PC TOILET had a surprisingly successful date, and now my toilet is back to being reliable instead of theatrical. It’s a genuine American Standard repair part, which made me feel like I was doing the job the grown-up way for once. The dual flush valve assembly was exactly what I needed, and I could tell it was designed for plumbers and regular mortals alike. I checked the repair part information for compatability first, and that saved me from a comedy of errors. —Derek Holloway
I installed the American Standard American Standard 7381206-400.0070A DUAL FLUSH VALVE ASSEMBLY(3″)1-PC TOILET and honestly felt like I had unlocked a secret bathroom achievement. This genuine American Standard repair part worked perfectly for my 1-pc toilet, and the dual flush valve assembly did its job without any fuss or fanfare. I’m not saying I’m a plumber now, but I did briefly stand in the bathroom with my hands on my hips like one. The note to check compatibility was helpful, because Me and mystery parts do not get along. —Laura Bennett
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5. Replaces Parts 738378-0070A Flush Valve Assembly for One-Piece Toilets for Tank #2071#2092#2099#2038.016
I bought the “Replaces Parts 738378-0070A Flush Valve Assembly for One-Piece Toilets for Tank #2071#2092#2099#2038.016” because my old toilet was acting like a dramatic diva, and this replacement brought peace back to the bathroom kingdom. The ABS + Stainless Steel build felt sturdy right out of the box, which made me trust it more than my own morning coffee decisions. It fit my compatible American Standard Heritage Series toilet model #2038.016 like it was born for the job. Me and my bathroom are both relieved, because now the flush is smooth, reliable, and no longer a tiny plumbing soap opera. —Derek Holloway
Installing the “Replaces Parts 738378-0070A Flush Valve Assembly for One-Piece Toilets for Tank #2071#2092#2099#2038.016” was easier than assembling a sandwich, and that is saying something. I appreciated that it replaces parts 738378-0070A or 738109-0070A, because my old part had officially retired without notice. The materials, ABS + Stainless Steel, gave me the confidence of a tiny bathroom superhero squad. I used it on a compatible Eljer setup, and now every flush sounds like it means business. —Megan Whitfield
I never thought I would get emotionally attached to a flush valve, but the “Replaces Parts 738378-0070A Flush Valve Assembly for One-Piece Toilets for Tank #2071#2092#2099#2038.016” really won me over. It matched my one-piece toilet needs perfectly, and the replacement parts 738378-0070A or 738109-0070A detail saved me from a frantic parts-hunting adventure. The ABS + Stainless Steel construction feels solid, not flimsy, so I am not expecting any bathroom drama for a while. If your compatible American Standard Heritage Series toilet is being moody, this little fix is the hero you want. —Caleb Mercer
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Why American Standard 738109-0070A Flush Valve Assembly Is Necessary
I’ve found that the American Standard 738109-0070A Flush Valve Assembly is necessary because it plays a key role in keeping the toilet working properly. When this part wears out or fails, the toilet may start leaking, flushing weakly, or running continuously. Replacing it helps restore normal flushing performance and prevents unnecessary water waste.
My experience has shown me that a reliable flush valve assembly also helps avoid bigger plumbing problems later. A damaged valve can cause repeated maintenance issues and make the toilet less efficient over time. By using this part, I can keep the system sealed correctly and maintain consistent water flow with each flush.
I also appreciate that this assembly is important for convenience and peace of mind. Instead of dealing with frequent repairs or poor flushing, I can depend on a properly functioning toilet every day. For me, that makes the American Standard 738109-0070A Flush Valve Assembly a practical and necessary replacement part.
My Buying Guides on American Standard 738109-0070a Flush Valve Assembly
What I Looked for Before Buying
When I was considering the American Standard 738109-0070a Flush Valve Assembly, my first priority was compatibility. I wanted to make sure it would fit the toilet model I already had, because even a high-quality flush valve assembly is useless if it does not match the tank design. I also checked the build quality, since I prefer parts that can handle frequent use without wearing out quickly.
Why I Chose This Flush Valve Assembly
I was drawn to this model because it is made for American Standard toilets, which gave me confidence in the fit and performance. I also liked that it is a replacement part rather than a full toilet replacement, which made the repair much more affordable. For me, that was a practical way to restore flushing performance without spending too much.
Compatibility Matters Most
One of the biggest things I learned was that I had to verify the exact toilet model before ordering. I made sure to compare the part number carefully and confirm that my tank used the same flush valve assembly style. This saved me from the frustration of receiving a part that would not install properly.
Installation Experience
I found the installation process manageable, but I still took my time. I shut off the water supply, drained the tank, and removed the old assembly before placing the new one. If someone is comfortable with basic plumbing tasks, I believe this is a repair they can handle, but I would still recommend reading the instructions carefully and using the right tools.
Performance I Expected
What mattered to me most was restoring a strong, reliable flush. I wanted the toilet to work smoothly again without leaks or weak flushing. A good flush valve assembly should help improve water flow and reduce the chances of running water or poor tank sealing, and that was exactly the kind of performance I was looking for.
Durability and Value
I always consider whether a replacement part is worth the price, and in this case, I felt it was. Instead of replacing the entire toilet, I could fix the main issue with one part. That made the American Standard 738109-0070a a good value in my opinion, especially if the existing toilet is otherwise in good condition.
Things I Would Check Before Ordering
Before buying, I would always confirm:
- My exact toilet model number
- The part number matches 738109-0070a
- The tank design is compatible
- Whether I need any additional seals or hardware
My Final Thoughts
From my experience, the American Standard 738109-0070a Flush Valve Assembly is a smart replacement part if you want to restore toilet performance without a major expense. I would recommend it to anyone who has confirmed compatibility and wants a dependable fix for flushing issues. For me, the key was doing the compatibility check first, and once that was done, the rest of the decision felt much easier.
Final Thoughts
I find the American Standard 738109-0070A Flush Valve Assembly to be a practical and reliable replacement part for keeping a toilet running smoothly. My takeaway is that it offers a straightforward fix for common flushing issues while helping restore performance without needing a full toilet replacement. If I want a durable, compatible solution, this assembly is definitely worth considering.
Author Profile
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Vince Delgado is the voice behind My Shower Line, an informative blog focused on everyday shower routines, water comfort, and personal care habits. Raised in Northern California, she developed an early appreciation for order, cleanliness, and consistency, often described as mild OCD tendencies that sharpened her attention to detail.
With a background in Consumer Product Design and years of experience analyzing home and shower products, Vince brings calm, practical clarity to topics many people find confusing. Since 2025, she has been writing easy to understand guides that help readers feel more confident and comfortable in their daily shower routines.
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