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Item #:
35456966
Watts Automatic Fill Valve for Hot Water Boiler, B911S-M3
85% of respondents would recommend this to a friend
Item #:
35456966
GBP 175
Price Details
Price
GBP 175
Excluding Shipping, VAT & Custom charges ( Shipping, VAT and custom charges will be calculated on checkout.
If Item price + shipping is below GBP 135, 20% VAT will be calculated on checkout, if it is equal or above GBP 135, no VAT will be charged. )
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Imported from USA store
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Excluding VAT : VAT will be calculated on the checkout page
Order now and get it around Saturday, December 05
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What Stands Out
Automatic Operation
Ensures consistent water levels in hot water boilers without manual intervention, enhancing operational efficiency and reducing maintenance efforts.
Robust Design
Constructed from durable materials to withstand high temperatures and pressures, ensuring long-lasting performance and reliability in demanding environments.
Easy Installation
Designed for straightforward installation with minimal tools required, allowing quick setup and integration into existing heating systems for immediate use.
Product Details
| Brand Name | Watts |
| Model Number | B911S-M3 |
| Global Trade Identification Number | 00098268918526 |
| Unit Count | 1 Count |
| Manufacturer | Watts |
| Number of Items | 1 |
| UPC | 098268918526 098268918519 |
| Included Components | Valve |
| Item Type Name | Automatic Fill Valve for Hot Water Boiler |
| Item Weight | 2.5 pounds (1.13 kg) |
| Number of Pieces | 1 |
| Manufacturer Part Number | 0386461 |
| Exterior Finish | Bronze |
| Inlet Connection Type | National Pipe Tapered |
| Outlet Connection Type | FNPT |
| Number of Ports | 2 |
| Thread Size | 0.5 inches |
| Thread Type | NPT |
| Connector Type | National Pipe Tapered (NPT), Female NPT (FNPT) |
| Valve Type | Combination Fill Valve/Backflow |
| Item Dimensions | 9.6 x 0.1 x 10.8 inches (24.4 x 0.3 x 27.4 cm) |
| Inlet Connection Size | 0.5 inches |
| Outlet Connection Size | 0.5 inches |
| Size | Size 1/2 In |
| Material Type | Bronze |
| Specification Met | ASSE 1012 |
| Material | Bronze |
| Brand | Watts |
| Item dimensions L x W x H | 9.6 x 0.1 x 10.8 inches (24.4 x 0.3 x 27.4 cm) |
Who Should Buy?
-
Homeowners
Ideal for homeowners wanting efficient water management in their hot water boilers for enhanced comfort and safety.
-
HVAC Professionals
Perfect for HVAC technicians needing reliable components to ensure proper boiler operation and maintain water levels.
-
Commercial Settings
Beneficial for businesses with hot water systems requiring constant monitoring to avoid downtime caused by water level issues.
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Low-Volume Use
Not suitable for applications with low hot water demand where automatic filling is unnecessary and can cause inefficiency.
Product Description
Watts Automatic Fill Valve for Hot Water Boiler, B911S-M3
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Customer Questions & Answers
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How to Shop Watts Automatic Fill Valve for Hot Water Boiler, Online From Ubuy?
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Is Watts Automatic Fill Valve for Hot Water Boiler, Available to Shop Online in UK?
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How Long Does It Take to Get Product After Placing the Order?
Answer: The delivery time of your ordered product varies as per what you've ordered and the shipping method that you've chosen. The estimated delivery time is mentioned during the checkout process, so be carefree while shopping.
Watts Water Heater Parts B911S-M3 Editorial Review
Watts Automatic Fill Valve for Hot Water Boiler, B911S-M3 is designed to enhance your hot water heating system effectively. This combination fill valve/backflow component is critical for maintaining proper pressure in your system, ensuring no backflow occurs, thereby maintaining efficiency and safety. Users have reported that it fits seamlessly with existing plumbing, and it's built with high-quality bronze that promises durability. With a convenient national pipe tapered connection type, installation is straightforward, and many have noted its long-lasting performance after several months of use. It’s essential to choose this original watts model over cheaper alternatives to avoid recurring issues, supporting its solid reputation among users.
Customer Reviews & Ratings
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Pros
- High-quality bronze construction for durability
- Easy installation with standard connections
- Essential for maintaining proper pressure
- Seamless fit with existing plumbing
- Positive feedback on long-lasting performance
Cons
- Thread may vary slightly from older models
Platform Trust & Buyer Confidence
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Diana
Verified buyer
“I have, in fact, had bad experiences on several occasions with service providers or shipping companies from America—definitely—but this is the first and only reputable and reliable company I have encountered so far; huge praise for their work. ”
23 October 2026 · via Trustpilot
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Jarl
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“Fast shipping and A+ product. ”
24 Oct 2026 · via Trustpilot
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Botibita
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“Great Range of Products and Excellent Service. The ordering and delivery process was excellent! I was able to purchase an item that I couldn’t find locally, and everything went smoothly from purchase to delivery. Thank you for the excellent service! ”
24 October 2026 · via Trustpilot
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GBP 175
Excluding VAT : VAT will be calculated on the checkout page
Order now and get it around Saturday, December 05
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
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