Fluidmaster 400A Anti-Siphon Universal Toilet Tank Fill Valve,Black
Condition: Used - Like New
$9.96
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This item is eligible for return within 30 days of receipt
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Availability:
Only 2 left in stock, order soon!
Arrives
Nov 23 – Nov 27
At a glance
- Condition
- Used - Like New
- Size
- 1 Pack
- Dimensions
- 12 x 3 x 12.5 in
- Weight
- 8 oz
- Material
- Plastic
- Inlet Connection Type
- Fill
- Outlet Connection Size
- 12 in
- In the box
- Fill valvenut and refill tube
Features 5
- RUBBER
- Imported
- fluidmaster400a anti-siphon toilet fill valve - fm400a
- This is highly durable
- This is manufactured in MEXICO
Description
Fluidmaster 400A Anti-Siphon Toilet Tank Fill Valve From the Manufacturer Fluidmaster is the 1 toilet repair brand in the world. Fluidmaster parts are found in more toilets than all other brands. The customer’s first choice and preferred supplier of toilet tank trim since 1957. Fluidmaster’s complete line of toilet repair parts includes; fill valves, flush valves, flappers, tank levers, dual flush valves, bowl wax, toilet repair kits, seals, connectors and more. With manufacturing facilities across the world, Fluidmaster reaches over 90 countries worldwide with unparalleled quality.
Specs 29
| Material | Plastic |
|---|---|
| Brand | Fluidmaster |
| Item dimensions L x W x H | 12 x 3 x 12.5 inches |
| Inlet Connection Type | Fill |
| Outlet Connection Type | Fill |
| Maximum Operating Pressure | 200 psi |
| Number of Ports | 2 |
| Outlet Connection Size | 12 inches |
| Specification Met | NSF, ANSI |
| Number of Packs | 1 |
| Brand Name | Fluidmaster |
| Model Number | 100554467 |
| Global Trade Identification Number | 26 |
| Unit Count | 1 Count |
| Item Highlight | Toilet Parts, Fill Valves, Anti-Siphon Valves, Toilet Repair, Fill Valve Antisiphon, Quiet, corrosion-resistant replacement |
| Manufacturer | EZ-FLO |
| Manufacturer Warranty Description | Warranty |
| Number of Items | 1 |
| Item Type Name | Toilet Tank Fill Valve |
| Item Weight | 8 ounces |
| Number of Pieces | 1 |
| Set Name | Fluidmaster 400CCRP4 Toilet Fill Valve Kit |
| Manufacturer Part Number | 400ARP25 |
| Thread Size | 7/8" or 1 1/4" |
| Thread Type | Standard/Universal |
| Valve Type | Float Valve |
| Item Dimensions | 12 x 3 x 12.5 inches |
| Size | 1 Pack |
| Material Type | Plastic |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Nov 23 – Nov 27
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Very easy to install
I recently had to replace the fill valve in one of my toilets and decided to go with the Fluidmaster 400A Anti-Siphon Universal Toilet Tank Fill Valve based on its strong reviews and reputation. I'm thrilled to say it lived up to every bit of the hype. Installation: The installation process was surprisingly straightforward, even for someone who isn’t a DIY expert. The instructions were clear and easy to follow, and the universal design meant it fit perfectly in my tank without any fuss. I appreciated the included parts and tools, which made the job even smoother. Performance: The 400A model performs exceptionally well. The anti-siphon feature is a game-changer, ensuring no contamination of the water supply—an important factor for both safety and efficiency. The fill rate is excellent; it refills the tank quickly and quietly, with no annoying gurgling or noise. Value for Money: Given its performance and reliability, the Fluidmaster 400A is a fantastic value for the price. It’s a cost-effective solution that delivers high-quality results, and I’m confident it will continue to perform well for years to come. Overall: If you’re dealing with a leaky or inefficient fill valve, I highly recommend the Fluidmaster 400A. It’s reliable, easy to install, and does exactly what it promises. My toilet’s performance has improved significantly since the replacement, and I couldn’t be happier with this purchase.
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Reviewed in the United States on August 21, 2024 by Jay
SO SO simple to install... just follow the instructions.
The Anti-Siphon fill valve gave out on my tank, so I used "Google Lens to identify the exact product replacement. It arrived ahead of schedule. The instructions were clear and concise, installation was a breeze, and it worked perfectly. Much, much cheaper than calling a plumber. I'm a disabled Vietnam vet in my 70s; if I can do it, anyone can do it. If you happen to have a shopvac, it's even easier to suck out the excess water than to drain it as explained in the instructions.
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Reviewed in the United States on April 4, 2026 by Chris P. Bacon
Success!
A toilet in my house was constantly trickling water into the bowl. It was tough to estimate how much water I was wasting, but it was running 24/7 so I bet it was material. When I looked inside the tank it was clear that the flapper was very old so I started there - easy peasy replacement, but the problem persisted. I then realized the valve wasn’t fully shutting off - even when the float was elevated there was water coming into the tank and eventually going into the overflow tube. This valve was an exact replacement and took about 15 min to install with no tools needed. Price is right and problem is solved. I’m thinking that our hard water is fouling up the valve over time so I’m glad this is an inexpensive and easy repair.
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Reviewed in the United States on December 30, 2024 by Bradley
Keep towels and buckets handy! Easy to install for first timer.
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.
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Reviewed in the United States on April 2, 2024 by b
Good quality
Worked good!
Reviewed in the United States on July 29, 2026 by Amazon Customer
So easy a caveman can do it.
My toilet started leaking about a month ago, continuously spilling water over into the overflow tube and keeping the water level high in the tank. I initially ignored it but when I received my next quarterly water bill...ouch..it was considerably higher than normal. I knew it was time to address the issue. While I consider myself fairly handy around the house, I rarely have the need to address plumbing issues beyond changing the showerhead. What to do? I decided to poke around in the toilet tank and I determined the leak was being caused by the fill valve. There was already a Fluidmaster 400a installed, so I decided it was time to replace it with a fresh one. I ordered a new Fluidmaster 400a here on amazon, and last night got to work replacing the old one. The installation was a snap! Including shutting off the water supply, draining the tank, installation, and making necessary adjustments the process was complete in around 10 minutes! I think even if you are not directly replacing a fluidmaster fill valve, the installation time will still be fairly quick. This is a project even a novice handyman (or handywoman) can feel secure attempting. The water in my region tends to be very harsh, and I believe that coupled with my occasional use of drop-in tank cleaners (a big no-no as per fluidmaster) caused the demise of the prior fluidmaster unit. Since I installed this there is no longer any constant running water sound, and the tank level has remained consistent. The flush action seems stronger and the bowl fills quicker and is fairly quiet. I am pleased I decided to tackle this project on my own rather than call in a plumber. I probably saved at least $100. I definitely reccommend purchasing this product and attempting this task yourself. For under ten dollars you cannot go wrong. The Fluidmaster 400a is used as standard equipment by many toilet bowl manufacturers, so that says something about the quality of the unit. The only complaint I have is that the directions are more complex than they need to be, don't be discouraged, disassemble your old fill valve (or ball cock floater) and you will be able to figure out how the new one goes in. I didn't even need to refer to the directions to complete this job. Next purchase is a Hydro Right Dual flush converter which I have ordered and should have on Tuesday for even further water savings...Review to follow.
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Reviewed in the United States on September 11, 2010 by Debra Boylan
Works perfectly
Worked perfectly. Easy to install
Reviewed in the United States on June 14, 2026 by D L Wilson
Solved my leak - Rebuild if you can, but the base on my old one caused my leak!
For those looking for an easier solution in most cases, they sell replacement rubber seals for the valve inside of these and that works well most of the time. In my case, it did not, and allowed mine to continue to slowly leak into the tank which would waste water as it rain down the overflow and then the drain. In my case, that happened due to some issue with the base portion of the value that mounts into the tank. I think it must have a small crack or something but would never stop. Those replacement parts are easy to install by twisting loose the top with the water off and removing the cap and putting in a new rubber piece. Once I concluded that my valve was not repairable, I order this new one and installed it in just a few minutes. They are very simple to install. Even if you weren't handy, most anyone can install one of these by simply following the instructions or online videos. After a quick install and turning the water back on, the valve is holding properly and no more leak. For my house, I seem to get somewhere around 5-8 years out of these. I have probably installed about three so far in the two toilets but they don't really have any hard expiration date. Mine may be affected by calcium in our water supply which seems higher than most. Anyway, if yours is leaking, this is a quick and easy fix!
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Reviewed in the United States on January 27, 2024 by William Maloney