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Item #:
137837364
Fluidmaster 400LS Leak Sentry Pro Fill Valve , Black
Item #:
137837364
FJD 75
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Order now and get it around Thursday, August 13
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What Stands Out
Leak Detection
Equipped with advanced leak detection technology, this valve alerts users to potential leaks, preventing water waste and ensuring peace of mind in home plumbing.
Easy Installation
Designed for straightforward installation, the Fluidmaster 400LS allows homeowners to replace old fill valves quickly, saving time and reducing plumbing costs without the need for tools.
Durability
Constructed with high-quality materials, this fill valve offers long-lasting performance, resisting wear and tear while maintaining efficient water flow in residential toilets.
Product Details
| Exterior Finish | Plastic |
| Inlet Connection Type | Threaded |
| Outlet Connection Type | NPT |
| Number of Ports | 1 |
| Thread Size | 0.875 inches (2.2 cm) |
| Thread Type | NPT |
| Valve Type | Toilet Fill Valve |
| Item Dimensions | 5.75 x 16 x 14.5 inches (14.6 x 40.6 x 36.8 cm) |
| Inlet Connection Size | 0.88 Inches (2.2 cm) |
| Outlet Connection Size | 0.88 Inches (2.2 cm) |
| Item Weight | 9.28 ounces (263.09 grams) |
| Size | Pack of 1 |
| Material Type | Plastic |
| Specification Met | CSA, NSF, RoHS, UL |
| Brand Name | Fluidmaster |
| Model Number | 400LS |
| Global Trade Identification Number | 00039961004000 |
| Unit Count | 1.0 Count |
| Manufacturer | Fluidmaster |
| UPC | 717029396419 039961415080 039961004000 |
| Included Components | Rough Plumbing;Parts and Repair;flush-valves |
| Item Type Name | Rp4 Toilet Fill Valve, For Use With Most Toilet Tanks Including 1.6 Gal Models |
| Manufacturer Part Number | 400LS |
| Material | Plastic |
| Brand | Fluidmaster |
| Item dimensions L x W x H | 5.75 x 16 x 14.5 inches (14.6 x 40.6 x 36.8 cm) |
Who Should Buy?
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Homeowners
Ideal for homeowners looking for a reliable solution to prevent toilet overflows and leaks efficiently.
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Plumbers
Great for professional plumbers needing a dependable fill valve for quick and easy installation in toilet repairs.
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DIY Enthusiasts
Perfect for DIY enthusiasts who want to enhance their bathroom fixtures and improve water efficiency.
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High-Usage Toilets
Not suitable for high-usage toilets that require heavy-duty components for reliability under constant use.
Product Description
Fluidmaster 400LS Leak Sentry Pro Fill Valve , Black
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Customer Questions & Answers
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Question:
What is the Fluidmaster 400LS Leak Sentry Pro Fill Valve designed for?
Answer: The Fluidmaster 400LS Leak Sentry Pro Fill Valve is designed for use in toilets. Its primary function is to fill the toilet tank with water after a flush while also monitoring for leaks. When a leak is detected, the valve automatically shuts off the water supply, preventing water waste and potential damage. This innovative feature provides both convenience and security, ensuring that your toilet operates efficiently without unnecessary water usage. This makes it ideal for households looking to save on water bills and maintain a leak-free environment. -
Question:
How does the Leak Sentry feature work?
Answer: The Leak Sentry feature in the Fluidmaster 400LS operates through a sensor that detects unusual water flow patterns. If a leak is identified, the fill valve automatically cuts off the water supply to prevent further excess usage. This mechanism helps in averting costly water bills and reduces the potential for water damage in your home. By providing an automatic response to leaks, homeowners can have peace of mind knowing that their toilet systems remain efficient and leak-free, enhancing the durability of their plumbing. -
Question:
Is the Fluidmaster 400LS compatible with all toilet types?
Answer: Yes, the Fluidmaster 400LS Leak Sentry Pro Fill Valve is designed to be highly versatile and compatible with most toilet types, making it suitable for both standard and modern toilets. It comes with adjustable height features and universal fittings that allow for easy installation. This flexibility makes it an excellent choice whether you are upgrading an old toilet or replacing a fill valve in a newer model, ensuring a seamless integration into your existing plumbing system. -
Question:
What materials are used in the Fluidmaster 400LS construction?
Answer: The Fluidmaster 400LS Leak Sentry Pro Fill Valve is constructed from high-quality materials designed for durability and long-lasting performance. The main components feature resilient plastic that is resistant to corrosion and deterioration from water exposure. This thoughtful design choice helps ensure that the valve will remain operational over time, performing efficiently without the need for frequent replacements, thus making it a reliable option for any home plumbing needs. -
Question:
Can I install the Fluidmaster 400LS myself?
Answer: Yes, the Fluidmaster 400LS Leak Sentry Pro Fill Valve is designed for DIY installation, making it accessible for homeowners who want to undertake simple plumbing tasks. The valve comes with detailed instructions, and its adjustable design allows it to fit various toilet models without the need for specialized tools. With a bit of basic plumbing knowledge, you can save on installation costs while ensuring your toilet operates efficiently with proper care and attention to detail during setup. -
Question:
How does the adjustable height feature of the Fluidmaster 400LS work?
Answer: The adjustable height feature of the Fluidmaster 400LS allows you to customize the fill valve to perfectly match your toilet tank's height requirements. It includes a telescoping design that can be easily modified by rotating the shaft to reach the desired height. This ensures optimal performance and water conservation, as the valve will fill the tank to the necessary level. Proper adjustment contributes to effective flushing and refilling, making the whole toilet operation more efficient. -
Question:
Does the Fluidmaster 400LS have any additional features?
Answer: In addition to its Leak Sentry feature, the Fluidmaster 400LS is equipped with a slow-closing toilet fill valve, which minimizes noise during tank refilling. This aspect enhances user comfort, particularly in quiet settings like night-time usage. Its robust construction with integrated float technology also ensures consistent performance, providing homeowners with a reliable solution that addresses common toilet issues while improving overall tank functionality. -
Question:
What troubleshooting tips should I consider if my Fluidmaster 400LS is not functioning properly?
Answer: If you find that your Fluidmaster 400LS is not performing as expected, first ensure that the water supply is turned on and the valve is properly installed. Common concerns include improper height adjustment or blockages in the valve. Make sure the fill valve is set at the correct height and check for debris around moving parts. Regular maintenance helps prevent issues, so cleaning the valve periodically will enhance its reliability and longevity, ensuring you can address any minor malfunctions promptly. -
Question:
What is the expected lifespan of the Fluidmaster 400LS Valve?
Answer: The Fluidmaster 400LS Leak Sentry Pro Fill Valve is designed for longevity, with an expected lifespan that can last many years under regular usage conditions. Its durable materials and innovative design prevent common failures associated with older fill valves. Users can extend this lifespan through regular maintenance, such as cleaning and ensuring the valve operates correctly, therefore providing a consistent and reliable performance while minimizing the need for frequent replacements. -
Question:
Where can I buy the Fluidmaster 400LS Leak Sentry Pro Fill Valve in Fiji?
Answer: You can purchase the Fluidmaster 400LS Leak Sentry Pro Fill Valve from Ubuy in Fiji. Ubuy offers a wide selection of plumbing products, ensuring fast access to quality items like this fill valve. With a user-friendly interface and efficient service, Ubuy is a recommended source for homeowners looking to upgrade or repair their toilet fixtures.
Fluidmaster Toilet Flush Valves 400LS Editorial Review
The Fluidmaster 400LS Leak Sentry Pro Fill Valve has garnered attention for its innovative design and practical functionality, especially its leak detection capabilities. Users have been particularly impressed by the valve's ability to differentiate between normal flushes and slow leaks. This feature helps prevent significant water loss, alerting homeowners to problems before they escalate. Reviewers have noted that the installation process is straightforward, typically taking around an hour for beginners but becoming quicker with experience. This fill valve is compatible with standard toilets that utilize a chain and flapper system, although some users reported it does not fit advanced systems with dual flush buttons. Many long-term users shared positive experiences, praising the durability and reliability of the product, with some reporting ten years of service before needing a replacement. This longevity, combined with the product's smart operation, has led some to Consider it an essential insurance against unexpected leaks, particularly for less-frequently used toilets. While reviewers generally regard the Fluidmaster 400LS as a superior choice compared to other brands, there were minor cautions about the installation process requiring careful adjustments to avoid damaging components over time. In summary, the Fluidmaster 400LS Leak Sentry Pro Fill Valve impresses with its leak detection features and simple installation, making it a go-to choice for homeowners looking for reliability and peace of mind. **
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Pros
- Innovative leak detection feature that minimizes water loss.
- Easy and intuitive installation process.
- Works well with standard toilets featuring a chain and flapper.
- Reported durability and longevity, often lasting over a decade.
- Highly regarded as an insurance measure against toilet leaks.
Cons
- Not compatible with advanced dual flush system toilets.
Platform Trust & Buyer Confidence
MA
Mohammad
Verified buyer
“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”
23 July 2026 · via Trustpilot
CK
Chitra
Verified buyer
“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”
22-Jul-26 · via Trustpilot
K
kund
Verified buyer
“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”
23-Jul-26 · via Trustpilot
OO
Onesi
Verified buyer
“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”
22 July 2026 · via Trustpilot
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SAO JOHN
Verified buyer
“Ubuy is a great online platform to buy stuff. Reliable, fast delivery time and great value for money. I've been using Ubuy online shopping platform for three years now and will continue to do so.”
23 July 2026 · via Trustpilot
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- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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FJD 75
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Features & Benefits
- Highly durable fill valve manufactured in the USA.
- Prevents unnecessary water and money loss with leak alerts.
- Ideal choice for multi-housing applications.
- Ensures the toilet remains fully operational.
- Includes bowl refill adjustment to prevent overfilling.
- Offers all the proven features of the reliable 400A Fill Valve.
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