Fluidmaster 400H-002 Performax Universal Toilet Fill Valve High Performance Tank and Bowl Water Control, 1-Pack, Multicolor

I don’t usually write reviews, but this one definitely deserves it. My toilet had been running on and off for weeks, and it was starting to drive me crazy (not to mention the water bill). I decided to give the Fluidmaster 400H Performax a try, and I’m really glad I did. Installation was surprisingly easy. I’m not a plumber by any means, but the instructions were clear and everything fit perfectly. Took me maybe 10–15 minutes from start to finish. The adjustable height feature made it simple to dial in the right fit for my tank. The difference was immediate. The fill is much quieter than the old valve, and it shuts off clean without that annoying trickling sound. The water level is now consistent, and the toilet refills quickly without being loud or aggressive. It also feels like a solid, well-made piece—nothing cheap or flimsy about it. You can tell it’s built to last. If you’ve got a running toilet or an old fill valve, just replace it with this and save yourself the headache. For the price, it’s a no-brainer.

Easy to install. Works great. I am so relieved to finally have it QUIET in the bathroom; the old valve was slow and just ran and ran and ran. This wasn't expensive; it is adjustable. And there are instructions in both print and video form.

God is so good! 🙌 This product and this company are absolutely awesome. I’ll be honest—it only took me about 15 minutes to replace my toilet fill valve. I had the part for a while but kept putting it off. I was so tired of the toilet running nonstop and constantly having to take the lid off to adjust it. Finally, I said, “That’s it—I’m fixing this today.” I even got instructions from ChatGPT beforehand, but honestly, I didn’t need them because the instruction booklet included with this product is excellent—clear, simple, and very easy to follow. I did run into one small challenge: the rubber hose in my toilet is permanently attached to the main nozzle and wouldn’t come off. I called the company for guidance, and their tech support was incredibly friendly and helpful. He told me to take the hose off of their toilet fill valve and just connect it to the nozzle in my toilet. I told him that I had been trying to do that, but it wouldn’t come off. So he told me to place their hose in hot water, and it came right off—problem solved! I was then able to install everything with no issues. Why pay $200 for a plumber when you can do it yourself? This cost me around $15, took about 15 minutes, and works perfectly. I’m so happy with this purchase and truly impressed with both the product and the customer service. Highly recommend!

I picked this up to replace an older, noisy fill valve in a Kohler toilet, and overall it’s a solid upgrade. Install was about as straightforward as it gets. If you’ve ever opened a toilet tank before, you can handle this. Shut off the water, swap the valve, adjust the height, and you’re basically done. Took me maybe 10–15 minutes taking my time. The instructions are clear, and the adjustment dials make it easy to fine-tune both the tank and bowl water levels. Performance-wise, it’s noticeably better than what it replaced. Fills faster, much quieter, and the tank shuts off clean without that lingering hiss you sometimes get with older valves. Flush feels more consistent too. The only reason I’m not giving it 5 stars is the refill hose clip. On my Kohler setup, that clip just would not stay put - it kept slipping off and turning into a mini water feature inside the tank. Not exactly what you want. I ended up using a small zip tie to secure it, and that solved the problem immediately. Once that was handled, everything worked perfectly. Build quality feels solid, and the adjustability is a nice bonus if you’re trying to dial things in or save a little water. Bottom line: very easy install, quiet and efficient performance, just be prepared to improvise a bit with the hose clip depending on your toilet setup.

Great replacement fill valve! Installation was quick and straightforward, and it immediately fixed the intermediate flush filling failure. The tank fills much faster and the flush feels stronger. Very good quality for the price and fits most toilets easily.

The Fluidmaster 400H‑002 is a sturdy, well‑built replacement valve that installs easily and seals perfectly. The adjustments make it simple to dial in the right water levels, and the overall build feels reliable for long‑term use. For the price, the value is excellent, and the sturdiness gives confidence that it will hold up over time. The seal is tight with no leaks, and it’s a clear upgrade over the old valve it replaced. A dependable, high‑quality part that earns a full five stars.

Fixed my toilet that used to take over an hour to fill! Now it fills within a minute. I dont know anything about toilets and I was able to install it in under 10 mins. Instructions were clear and overall it was very simple!

Works great in my American Standard Champion 4 M/N 4266. Fills up very fast (finished before I'm done washing my hands) and quietly (can barely hear it in the bathroom instead of having to turn the TV up in the other room with the original one). Install was a piece of cake. Didn't have to remove the tank, just have a bucket under the old connection to catch the left over water in the tank (there will be a lot if you have the original champion 4 flush valve).

Cumple con mis espectativas, eficiente, fácil de instalar

Perfect fit and fast delivery

Cuento con hidroneumático (30-50 psi) en mi hogar, tuve que cambiar mis antiguas válvulas con flotador porque provocaban vibraciones excesivas en las tuberías, estas vibraciones sólo desaparecían cuando cerraba casi por completo la válvula de control angular, lo cual no era conveniente porque tardaba hasta 15 minutos en llenarse el tanque. Encontré esta válvula después de buscar en foros de plomería, pedí esta versión de 2 válvulas, vienen en una caja de cartón perfectamente resguardadas. La válvula es de plástico (PP y POM) de gran calidad, aunque puede parecer frágil al tacto, es muy resistente una vez instalada. La instalación es bastante sencilla (solo ocupé una llave inglesa y el vídeo de instalación en la descripción de este producto). Adjunté un video de su funcionamiento luego de bajar la palanca completamente, llenó el tanque de mi inodoro (4.5 L) en menos de medio minuto y no hubo golpe de ariete (vibración de tubos). Aclaro lo siguiente, no es tan silenciosa como promociona la página de Fluidmaster (pero sí más silenciosa que una válvula de llenado con flotador Fleximatic, como el de la foto), sin embargo, sí llena el tanque bastante rápido y trabaja excelente con alta presión de agua (hasta 125 psi). El producto no es caro en comparación con lo que ofrece (llenado rápido, eficiente con alta presión de agua, silencioso si lo comparas con válvulas de flotador), además tiene garantía de 7 años. LO RECOMIENDO.

This item fits my house “American Standard” toilets perfectly

C'est une merveille. Je vous explique. Premièrement, c'est un standard alors cela va fonctionner pour votre cuvette. Je l'ai achetée car la mienne coulait sans arrêt et c'était bruyant. Je me questionnais à l'utilité de faire venir un plombier mais j'ai été agréablement surprise par son mode d'emploi très clair et simple. Je vous confirme que vous n'avez pas besoin d'outils particuliers et que c'est facile. Excellent produit. Il y en a 2 dans la boîte. Prix très avantageux. Je recommande