--- product_id: 3887729 title: "Fluidmaster 400AH PerforMAX Universal High Performance Toilet Fill Valve, Easy Install" brand: "fluidmaster" price: "฿242" currency: THB in_stock: false reviews_count: 9 url: https://www.desertcart.co.th/products/3887729-fluidmaster-400ah-performax-universal-high-performance-toilet-fill-valve-easy store_origin: TH region: Thailand --- # Water-saving roller clamp Adjustable height 10-15 in 2X faster refill rate Fluidmaster 400AH PerforMAX Universal High Performance Toilet Fill Valve, Easy Install **Brand:** fluidmaster **Price:** ฿242 **Availability:** ❌ Out of Stock ## Summary > 🚀 Upgrade your flush game with the fastest, quietest fill valve on the market! ## Quick Answers - **What is this?** Fluidmaster 400AH PerforMAX Universal High Performance Toilet Fill Valve, Easy Install by fluidmaster - **How much does it cost?** ฿242 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/3887729-fluidmaster-400ah-performax-universal-high-performance-toilet-fill-valve-easy) ## Best For - fluidmaster enthusiasts ## Why This Product - Trusted fluidmaster brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Eco-Smart Water Savings:** Customizable roller clamp lets you optimize water use and cut utility bills. - • **Whisper-Quiet Operation:** Eliminates noisy valve sounds for a peaceful bathroom experience. - • **DIY Friendly Installation:** Get it installed in under 10 minutes—no plumber needed, no stress. - • **Turbocharged Refill Speed:** Experience 2X faster tank refill times—flush and go without the wait. - • **Universal Fit, Zero Hassle:** Fits most toilets with adjustable height from 10 to 15 inches for seamless compatibility. ## Overview The Fluidmaster 400AH PerforMAX is a universal high-performance toilet fill valve designed for high-efficiency toilets (1.28 to 1.6 GPF). It delivers twice the refill speed of standard valves while operating quietly. Featuring an adjustable height (10-15 inches) and a water-saving roller clamp, it optimizes water usage and fits most toilet models. Easy to install in under 10 minutes, it’s built to last with quality construction and backed by a 7-year warranty. ## Description Product Description Designed to replace old, leaky, slow filling valves, the Fluidmaster 400AH PerforMAX Universal High Performance Toilet Fill Valve is the most powerful toilet fill valve on the market (*also known as the 400ARHR). With quick and easy installation, this fill valve design eliminates noise while generating 2X greater refill rates than standard fill valve designs. A universal toilet repair part that fits most toilet models, the fill valve features a height adjustable valve shank design to adjust between 10 – 15 inches. Built to last, this replacement toilet fill valve features quality construction and a water-saving roller clamp to help save water and money by optimizing your toilet’s water usage. Best for use with high efficiency 1.28 and 1.6 gallons per flush toilets (including dual flush) and can be used with pre-1994 3.5 gallons per flush toilets. Combine with a Fluidmaster toilet flapper or flush valve for complete fill and flush optimization.. From the Manufacturer The Fluidmaster 400AH PerforMAX Toilet Fill Valve sets the high performance standard. Designed to replace old and leaky fill valves the PerforMAX fill valve is the most powerful toilet fill valve on the market (*Also known as the 400ARHR). With quick and easy installation this fill valve design eliminates noise, while generating 2X greater refill rates than standard fill valve designs. A universal toilet repair part that fits most toilet models, with a height adjustable valve shank design. Best with 1.28 HET and 1.6 GPF toilets, including dual flush and can use with pre-1994 3.5 GPF. The water-saving roller clamp helps save water and money by optimizing your toilets water usage. Built to last this replacement toilet fill valve features quality construction with a 7 year warranty. Combine with a Fluidmaster toilet flapper, or flush valve for complete fill and flush optimization. PerforMAX the top solution for enhancing your toilets power, and eliminating noise. Review: Good replacement valve - Oddly enough, I had the toilet fill valve go bad in ALL three of my toilets in about a 3-month period. The toilets weren't too old at only six years since the house was built, but nonetheless they needed replacements all around the same time. We picked this one up on desertcart as I had already bought one from another store and didn't realize that all three ere going to go out around the same time period. This price to this was comparable to other stores and with the convenience that I didn't have to go pick it up. Installation was a breeze. Turn off water, flush, and disconnect the water line. I did have to adjust the height slightly to make the fill hose align more correctly, but that's easily accomplished with this valve. I can't tell that filling is any faster than my old valve, but I will say it's much quieter! My old valves still worked, but were causing my toilet to run occasionally and also had a random "groan" occasionally. Now there's no running and they're all nice and quiet. Pro-tip: Make sure you don't also need a flapper to go along with the valve. I had one flapper that was pretty deformed and was causing the toilet to run. (The valve still needed to be replaced to fix the loud groans though). Overall, pretty happy with this buy. Super easy to install and solved my problem. Hopefully I can get another 6 years out of this before having to replace again. Review: I Don't Know About "Quietest", But It Certainly Refills Fast! - This model is a definite improvement upon the classic Fluidmaster design. Though not overly noisy, it doesn't sound noticeably quieter than other fill valves. Where this valve really excels is the rapid refill time. Timing from when I pull the flush handle, it takes just 25 seconds until the valve shuts off. I didn't time my old Fluidmaster valve, but twice as fast would not be an exaggeration — it's the fastest refilling time I've ever seen on a regular 1.6 GPF tank-style toilet. (I suppose you could also say that makes it the quietest, because any noise lasts for such a short time.) IMPORTANT — Take the time to adjust the refill tube control slider. The idea is for the toilet bowl to reach its proper fill level at exactly the same time the tank is filled. If the toilet bowl fills before the tank fill valve shuts off you will waste water. With a bit of trial end error you'll find the perfect position for the slider. Fortunately, it won't take long to do this, because the tank refills so fast! The Fluidmaster 400ARHR High Performance Toilet Fill Valve is an ideal replacement for any standard toilet fill valve. It's well designed, inexpensive, easy to install, works great, and saves water. I might even call it "perfect". ## Features - Size: Universal Fit for HET 1.28 gal.ENHANCES YOUR TOILET’S POWER: Toilet fill valve replaces old, inefficient valves and eliminates noise while generating 2X greater refill rates than standard fill valve designs - UNIVERSAL DESIGN: Fill valve adjusts easily from 10 – 15 inches and is ideal for use in high efficiency 1.28 to 1.6 gallons per flush toilets - ADJUSTABLE ROLLER CLAMP: Water-saving roller clamp lets you regulate the fill level in the bowl to help save water and money - EASY INSTALLATION: Easily installs in 10 minutes or less to get your toilet flushing like new again ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B006MWQKOU | | Best Sellers Rank | #769,826 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,108 in Toilet Flush Valves | | Brand Name | Fluidmaster | | Customer Reviews | 4.6 4.6 out of 5 stars (11,546) | | Exterior Finish | Plastic | | Global Trade Identification Number | 00039961702456 | | Included Components | Product Only | | Inlet Connection Size | 0.75 Inches | | Inlet Connection Type | Solvent | | Item Dimensions | 3.13 x 4.38 x 12.5 inches | | Item Type Name | toilet-replacement-parts | | Item Weight | 11.2 ounces | | Manufacturer | Fluidmaster | | Material Type | Plastic | | Model Number | F400ARHR | | Number of Ports | 2 | | Outlet Connection Size | 0.75 Inches | | Outlet Connection Type | NPT | | Size | Universal Fit for HET 1.28 gal | | UPC | 039961702456 | | Unit Count | 1.0 Ounce | | Valve Type | Toilet Fill Valve | ## Product Details - **Brand:** Fluidmaster - **Exterior Finish:** Plastic - **Global Trade Identification Number:** 00039961702456 - **Inlet Connection Size:** 0.75 Inches - **Inlet Connection Type:** Solvent - **Item dimensions L x W x H:** 3.13 x 4.38 x 12.5 inches - **Material:** Plastic - **Number of Ports:** 2 - **Outlet Connection Size:** 0.75 Inches - **Outlet Connection Type:** NPT ## Images ![Fluidmaster 400AH PerforMAX Universal High Performance Toilet Fill Valve, Easy Install - Image 1](https://m.media-amazon.com/images/I/51tyv+uVKuL.jpg) ![Fluidmaster 400AH PerforMAX Universal High Performance Toilet Fill Valve, Easy Install - Image 2](https://m.media-amazon.com/images/I/71-icj7taqL.jpg) ![Fluidmaster 400AH PerforMAX Universal High Performance Toilet Fill Valve, Easy Install - Image 3](https://m.media-amazon.com/images/I/51XeuPsBv1L.jpg) ![Fluidmaster 400AH PerforMAX Universal High Performance Toilet Fill Valve, Easy Install - Image 4](https://m.media-amazon.com/images/I/41ovt1eJi1L.jpg) ![Fluidmaster 400AH PerforMAX Universal High Performance Toilet Fill Valve, Easy Install - Image 5](https://m.media-amazon.com/images/I/61ZX46sZP4L.jpg) ## Questions & Answers **Q: It takes 75 seconds to fill the tank. Did I install correctly? Otherwise it works fine.** A: The only reason I purchased this fill valve system is because it took too long for my tank to fill. This model's specifications states that: "PerforMAX technology achieves 2X greater refill rate". It takes 140 seconds to fill my 3.5 gallon tank. This is slower than the old Fluidmaster I replaced. I am not happy about the purchase. **Q: What is the size of water line connection ?** A: THE SUPPLY LINE IS 7/8 INSIDE DIAMETER THREAD BUT THE ACTUAL INSIDE WATER SUPPLY DIAMETER IS 3/8. **Q: Why does my toilet clog?** A: There are a number of possible reasons. Old metal pipes can corrode and narrow. Hard water can build up a layer of calcium in the pipes. There could be tree roots in a pipe. Someone could be flushing something they incorrectly think is flushable... **Q: What's the blue plastic device attached on the rubber hose of the 400AH?** A: The flushing power of a toilet comes from the water in the tank (and specifically the height of the water), and the blue plastic device has nothing to do with the tank fill. The blue plastic is a flow restrictor for the water going into the bowl. Depending on your water pressure, you may get different fill rates in the tank and the bowl. Excess water in the bowl simply goes down the drain, so you can slow down the bowl refill so that bowl and tank refill at the same time, saving water. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good replacement valve *by A***M on February 13, 2020* Oddly enough, I had the toilet fill valve go bad in ALL three of my toilets in about a 3-month period. The toilets weren't too old at only six years since the house was built, but nonetheless they needed replacements all around the same time. We picked this one up on Amazon as I had already bought one from another store and didn't realize that all three ere going to go out around the same time period. This price to this was comparable to other stores and with the convenience that I didn't have to go pick it up. Installation was a breeze. Turn off water, flush, and disconnect the water line. I did have to adjust the height slightly to make the fill hose align more correctly, but that's easily accomplished with this valve. I can't tell that filling is any faster than my old valve, but I will say it's much quieter! My old valves still worked, but were causing my toilet to run occasionally and also had a random "groan" occasionally. Now there's no running and they're all nice and quiet. Pro-tip: Make sure you don't also need a flapper to go along with the valve. I had one flapper that was pretty deformed and was causing the toilet to run. (The valve still needed to be replaced to fix the loud groans though). Overall, pretty happy with this buy. Super easy to install and solved my problem. Hopefully I can get another 6 years out of this before having to replace again. ### ⭐⭐⭐⭐⭐ I Don't Know About "Quietest", But It Certainly Refills Fast! *by E***T on September 1, 2016* This model is a definite improvement upon the classic Fluidmaster design. Though not overly noisy, it doesn't sound noticeably quieter than other fill valves. Where this valve really excels is the rapid refill time. Timing from when I pull the flush handle, it takes just 25 seconds until the valve shuts off. I didn't time my old Fluidmaster valve, but twice as fast would not be an exaggeration — it's the fastest refilling time I've ever seen on a regular 1.6 GPF tank-style toilet. (I suppose you could also say that makes it the quietest, because any noise lasts for such a short time.) IMPORTANT — Take the time to adjust the refill tube control slider. The idea is for the toilet bowl to reach its proper fill level at exactly the same time the tank is filled. If the toilet bowl fills before the tank fill valve shuts off you will waste water. With a bit of trial end error you'll find the perfect position for the slider. Fortunately, it won't take long to do this, because the tank refills so fast! The Fluidmaster 400ARHR High Performance Toilet Fill Valve is an ideal replacement for any standard toilet fill valve. It's well designed, inexpensive, easy to install, works great, and saves water. I might even call it "perfect". ### ⭐⭐⭐⭐ cheap and efficient *by E***A on August 17, 2016* I wish it looked more fancy but it doesn't matter as it works great on my duo flush toilet! I ordered it for my very compact whitehouse toilet thinking, that since it works with "all toilets", it will fit in mine and be breeze to install...well I was just partially right. The installation is easy and effortless, problem was with the hight of the valve- it stocked up above toilet's tank rim. I could still close the lid on top of the tank, but the fact of elevation itself, was driving me mad. I almost wanted to return it when I realized that my other dual flush toilet (GlacierBay), has very deep tank with small flusher inside. So I swapped the fill valves and now both toilets work efficiently. I can't believe the price. Yes, the design of valve might seem very basic and outdated, but it delivers. I spent may be a week looking for a dual flush fill valve, and not only there is just handful numbers] of them available, but they are pretty expensive. I'm glad I took a gamble on this one. Water does fill quickly and seamlessly, without prolonging or annoying sound and so far (3 months), it is holding just fine. ~~~ *FPN: ^ minimum size- almost 10"H, maximum opening 15"H, ^^ good for all toilets (especially ones made after 1994), with adjustable water level and filling pressure, dual or single flush :) ^^^ comes with everything necessary for installation, ^^^^ assembled in Mexico --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.th/products/3887729-fluidmaster-400ah-performax-universal-high-performance-toilet-fill-valve-easy](https://www.desertcart.co.th/products/3887729-fluidmaster-400ah-performax-universal-high-performance-toilet-fill-valve-easy) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-04-24*