Get a Powerful Flush by Installing a Fluidmaster 400AH PerforMAX Toilet Fill Valve

* Quietest, most powerful solution to fix and upgrade your toilet
* Easy to install, Universal fit
* 2X greater bowl refill delivers a more powerful flush for 1.6 or lower GPF toilets
* Water saving roller clamp lets you regulate the fill level in the bowl
* Best for newer, high efficiency toilets (HET), 1.6 gallons or less
* EZ-Twist height adjusts from 10″ to 15″ to fit most tanks
* 7 year warranty

Fluidmaster® recommends the PerforMAX® fill valve for toilets manufactured from 1994 to the current time (works on older toilets). If you are replacing the fill valve, we recommend you also replace the flapper with the 502 flapper for the best performance. The 502 flapper works on both old and new 2 inch flush valve toilets.

The most powerful toilet fill valve on the market. The 400AH is also known as the 400ARHR. With efficient and ultra-quite fill the 400AH replaces other inefficient, or outdated fill valve designs. Help prevent excessive or inadequate bowl fill levels. The 400AH is a code approved, anti-siphon design, that won’t contaminate the fresh water supply. Some toilet models not supported: Glacier Bay® or Niagara® Flapperless Toilets, One Piece Toilets. Does not replace Side Entry Valves.

[yjam]

Saved at least another $100. I bought the Fluidmaster Fill valve, which I am going to keep, based solely on the fact that these professionals taught me, the "why", not just the "how". It turned out that cleaning out the valve did the trick and stopped my toilet from continually flowing. I didn't need to replace the entire apparatus. The guy that started the job had already charged us $85 and wanted another $100 to come out and replace the fill valve completely. This little, extremely easy, trick/tip, fixed the issue, for no charge!! Seriously, thank you for talking to me, who is very computer savvy, in a manner that understands, I'm not dumb, just ignorant of how this all works. I am a Fluidmaster product customer for life because of this one issue.
Thank you!

[nadinelalanne]

I followed the instructions and it worked perfectly; even better than the previous valve. My father had doubts I could do it but my mother encouraged and of course, I did it. Saved them from having to call someone out and having to pay too much to get it fixed. Thank you for providing this easy to follow tutorial!

[TangoNevada]

These instructions are so much clearer than what comes with the product.

[maximilianrockefeller]

Just bought the 400AH - never having replaced anything on a toilet I came and found this video, and was all done with the job in 10min. Thanks Fluidmaster 🤘😎🤘

[FormerDeathMachine]

This added about 400hp to my toilet. Thank you!

[freemanmt]

The video took longer to watch then it took to install the valve. Lol. Very thankful your company puts out a comprehensive video. Great job!

[ToriFn]

Thank you for taking the time to explain this. I installed the whole new system about two months ago and ever since my dads toilet has been clogging up multiple times a week. The manufacturer instructions did a bad job of explaining the height adjustments and so even though I knew at the time of install that the tank water level was at LEAST two full inches less then previously, I could not determine how to correct it. Your guidance has saved me from ripping the entire toilet back apart and I think it’s back at the same water level it had been originally. You are awesome!

[richardson]

Great video. My removal was hard because the last person more than hand tightened the nut underneath. Great job! Thank you, you saved me a lot of money!

[FourQed]

Put one in today. Went very well, instructions were excellent.

[davec.]

THANK YOU, we had a water main break and had dirt get into our lines... The dirt clogged up the fill valves and it stopped working correctly so FLUSHing the tubing the way you showed in the video is what fixed my problem even though I had replaced the unit thinking that is was broken! Next time I will know what to do first! Thanks again

[Satans_lil_helper]

Good deal. I've sold your products for many years, yet I've never had to replace one in my own home until now. The supply lines don't have shutoffs, so I'll replace those while I'm at it. Thanks for the easy tutorial. 👏🏾

[cuarajhyrojayju]

I just installed in 20 minutes in a very tight space otherwise it would have taken 10 minutes thanks for the video it really helped me out😊

[pumpkinheadghoul]

I must say, that is one brand new looking old fill valve. Kidding! Thanks for the video. Amazon delivered two of these today. Two of my cheap old fill valves lasted exact two years. Both of them started having problem within a week of each other. Here's hoping the Fluidmaster 400AH lasts longer.

[Jedi_Luke]

The only video that told me about putting the hose too far in the tube can cause syphoning.

[huntingtonbeachsasquatch]

Mine was filling slow and found a restriction in a white rubber screw about two inches long in between the lower black tube and the upper grey tube. pulled the two tubes apart, removed the rubber screw inside the tube with needle nose pliers, removed the what looks like rocks, reinstalled the rubber screw, reattached the two tubes, put everything back together and back to full pressure.👍😉
Before when you flush it would take around two minutes to refill and that sucks in the middle of the night to hear that going!


BTW, Luck!

[cavscout]

Video is good, valve seems very promising, and installed very easy. Not only that, actually learned a lot about proper adjustment of toilet refill setup. Not only will I save the water my old fill valve was leaking down overflow tube, but won't be overfilling bowl.

[scottkendall]

just replaced valve with the 400AH...worked like a charm. thanks.

[TheLarryBrown]

It is possible to adjust the height of the valve without removing it from the toilet, a major labor saver. Say you installed a new valve and during testing you see that the tank water is refilling too low, darn it, you should have adjusted the valve taller during installation but now you'll have to take it all apart again. What you can do instead is * shut off water * flush to drain tank * on the tube of the valve, beneath the float there is a clear plastic ring that keeps the thread of the outer valve tube engaged with the thread of the lower valve tube. Slide that plastic ring upwards and hold it there. The threads are now not positively engage and you can simply gently pull the top of the valve upwards to the desired height. * After adjustment slide the plastic ring all the way back down into its locked position.

[dogpatch]

Gone are the days when a toilet tank valve would last 20 years! Today's valves (this one included) last only 2-3 years!

[suvro]

This is the Full Installation Walkthrough. Thank you.