Fluidmaster 400A Anti-Siphon Universal Toilet Tank Fill Valve,Black

4.7 4.7 out of 5 stars | 3,632 ratings

Price: 8.98

Last update: 09-07-2024


About this item

fluidmaster400a anti-siphon toilet fill valve - fm400a
This is highly durable
This is manufactured in MEXICO

Product information

Technical Details


Top reviews from the United States

AKG
5.0 out of 5 stars Replaced sticking valve. Easy to install.
Reviewed in the United States on June 3, 2024
I wasn’t sure what was wrong with the existing valve but it wouldn’t let the toilet tank fill sometimes. I got this replacement and it was extremely easy to install. Works perfectly. No more flushing issues. Has worked great for over two months now. Great price as well.
Charles R.
5.0 out of 5 stars It works
Reviewed in the United States on June 1, 2024
I had to replace the float valve in my toilet after 33 years of use. When this arrived, I was afraid that I made a bad purchase because it felt really light weight. I was wrong. This thing works better than the original. It’s as durable as one could expect from a plastic part. It’s stable, and the seal works perfectly. It’s easy to adjust to get the water height just right. You can hear it running as it fills the tank but you have to listen for it. It has worked flawlessly in the months since I installed it. The instructions are fairly well written, and I believe pretty much anyone could install this no matter your level of experience. Overall, I’m very happy with this purchase.
Mayra S.
5.0 out of 5 stars Great value
Reviewed in the United States on April 23, 2024
Very easy to install. Got it to replace a Fluidmaster 300 that had water gushing from the top part and leaking out. The size is adjustable. Seems sturdy and the material is similar to what the original one was. Haven't noticed any noises or had any issues with it so far. Works great.
Bryan
4.0 out of 5 stars Keep towels and buckets handy! Easy to install for first timer.
Reviewed in the United States on April 2, 2024
Never had to do this before, first time. I was able to install it in about 30 minutes. I did about an hour of research before purchase to make sure I bought the right part as I wasn’t sure if this would replace the toilet fill valve & ballcock in my Mansfield toilet.. this part worked perfectly.

The instructions say sponge/towel is optional but I think it’s mandatory. It’s hard to get all the water out of the tank. When you take out the old fill valve, the rest of the water in the tank will just fall out of the hole from removal of the fill valve. So just keep a bucket under the hole to catch the water that drains out. A towel on the floor behind the toilet under the fill valve hole will ensure you don’t get the wall and floor covered with water.

Also be sure to measure the height of the fill valve and make sure it’s at the right height before fully installing it. Once the fill valve is installed and water is placed in tank, the only way to adjust the height of the fill valve is to take it out and start over.. which requires draining the tank again and removing the locking washer. So measure twice before installing.

I like the fill valve because it’s quiet and does a good job. Only installed it a few days ago but seems to be doing well so far. Price is also reasonable. Wish it was made in USA, but other than that seems like a good product.
Royl
5.0 out of 5 stars Fix and spares
Reviewed in the United States on June 17, 2024
Toilet refill valve was failing and needed a quick repair. Found this as a package of three, the price was great, delivery was quick, fix was easy and have spares for any future toilet breakdown. Installation is simple, no leaks and adjustment is easy.
Hollis Bui
5.0 out of 5 stars Scuffed packaging, worked fine
Reviewed in the United States on May 12, 2024
Package arrived in an paper mailer and inside was a very old and scuffed box -- the bottom of it was already open with no resealing, the valve itself was dusty on the inside (which you may be able to make out in the 4th picture), and the floater was not in one piece as pictured everywhere on the product and instructions so I had to guess at it and manually reattach it by just squeezing the smaller half into the larger one until it seemed secure.

Still, even with the worry about the product quality based on the packaging (which is why I took the pictures in the first place), first impression is that it works flawlessly with all parts described. Extremely simple instructions to install.
Customer image
Hollis Bui
5.0 out of 5 stars Scuffed packaging, worked fine
Reviewed in the United States on May 12, 2024
Package arrived in an paper mailer and inside was a very old and scuffed box -- the bottom of it was already open with no resealing, the valve itself was dusty on the inside (which you may be able to make out in the 4th picture), and the floater was not in one piece as pictured everywhere on the product and instructions so I had to guess at it and manually reattach it by just squeezing the smaller half into the larger one until it seemed secure.

Still, even with the worry about the product quality based on the packaging (which is why I took the pictures in the first place), first impression is that it works flawlessly with all parts described. Extremely simple instructions to install.
Images in this review
Customer image Customer image Customer image Customer image
Auric Nova
5.0 out of 5 stars So far the item was easy to install and seems to work pretty well.
Reviewed in the United States on May 14, 2024
Although this item looks kind of flimsy, it does work and it's easy to install. It was only one time that it seemed to get stuck and I had to reopen the tank to move the valve. It's been working ever since so there's no need to buy the entire kit. Just replace this inexpensive part and you've got a new toilet.
B-Dog
5.0 out of 5 stars Good old reliable valve
Reviewed in the United States on June 5, 2024
Replaced lots of these. Simple reliable, good price, shipped fast.

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