SKU: 82451649292

WATTS 1/2 Inch B911-M3 Threaded Combination Water Feeder

Sale price$450.00 Regular price$500.00
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Description

WATTS 1/2 Inch B911-M3 Threaded Combination Water FeederThe WATTS 1 2 inch B911 M3 is a threaded combination water feeder and backflow preventer designed for use in hydronic heating systems. It automatically maintains system pressure while preventing contaminated water from backflowing into the potable supply. Ideal for residential and light commercial use. Product Specifications: Connection Size: 1 2 inch NPT threaded Body Material: Bronze Inlet Pressure Range: 10 to 25 psi adjustable (factory set at 15

The WATTS 1/2 inch B911-M3 is a threaded combination water feeder and backflow preventer designed for use in hydronic heating systems. It automatically maintains system pressure while preventing contaminated water from backflowing into the potable supply. Ideal for residential and light commercial use.

Product Specifications:

  • Connection Size: 1/2 inch NPT threaded
  • Body Material: Bronze
  • Inlet Pressure Range: 10 to 25 psi adjustable (factory set at 15 psi)
  • Temperature Range: 33°F to 180°F
  • Maximum Working Pressure: 100 psi
  • Standards: ASSE 1081, CSA B64.3 certified
  • Application: Hydronic heating systems
  • Type: Combination water feeder and backflow preventer

Key Features:

Two-in-One Functionality: Combines a pressure-reducing valve and backflow preventer to simplify system installation and improve reliability.

Adjustable Pressure Setting: Factory preset at 15 psi but easily adjustable to match the pressure requirements of your specific heating system.

Durable Bronze Construction: Made from corrosion-resistant bronze for long-lasting use and high performance under continuous heating cycles.

Certified for Safety Compliance: Meets ASSE and CSA standards, ensuring safe operation and prevention of backflow contamination.

Threaded Connection Design: Features standard 1/2" NPT threads for straightforward installation into most existing hydronic heating systems.

How It Works:

The WATTS B911-M3 combines a water pressure regulator and backflow preventer in a single unit. Installed on the feed line to a hydronic heating system, it automatically feeds water into the system to maintain a preset pressure, typically 15 psi. If system pressure drops, the valve opens to allow water in. The integrated backflow preventer uses a check valve to block contaminated water from flowing back into the potable supply. Its compact, threaded design simplifies both retrofits and new installations, offering protection and convenience in one package.

FAQs:

Can I use the B911-M3 with steam systems?

No, it is designed specifically for hydronic (hot water) heating systems, not steam applications.

How do I adjust the pressure setting?

The pressure can be adjusted using the screw on top of the feeder; clockwise increases pressure, counterclockwise decreases it.

Is this device lead-free and safe for potable water use?

No, this model is not rated lead-free and is not intended for direct use in potable water systems.

What happens if the system loses pressure completely?

The feeder will automatically open to restore system pressure to the preset value, ensuring the system remains operational.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 82451649292

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Emily
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★★★★★ 4
Actual glitter instead of highlighter
Color: Gold, Size: 3.38 Fl Oz (Pack of 1)
I was looking for a glow body oil that had actual pieces of glitter in it, instead of just a body highlighter (like many of the other market glow oils) and this is exactly what I was looking for. It smells delicious and is very moisturizing. It does feel like an oil, but it is lightweight. I have the sol de janiero glow oil and the main differences are the pieces of glitter vs the highlighting effect. Its not an over powering amount of glitter but just enough that if the light hits you, you can tell there is a shine
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Reviewed in the United States on July 13, 2025
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Deshanti Montgomery
Charlottesville, US
★★★★★ 5
Love
Color: Gold, Size: 3.38 Fl Oz (Pack of 1)
I love how this smells, looks and feel
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Reviewed in the United States on April 15, 2026
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Jenn
Draper, US
★★★★★ 3
Glass bottle
Color: Gold, Size: 3.38 Fl Oz (Pack of 1)
Smells nice, not the shimmer I was looking for. It wasn’t super glittery like another brand I had. Also it’s in a glass bottle. So I didn’t feel comfortable packing it on my trip.
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Reviewed in the United States on February 26, 2026
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Ena B
San Leandro, US
★★★★★ 5
Shimmer body oil
Color: Gold, Size: 3.38 Fl Oz (Pack of 1)
Nice Product Lite and a little bit of shimmer
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Reviewed in the United States on February 21, 2026
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Sadie
Lowell, US
★★★★★ 5
Probably buy again
Color: Gold, Size: 3.38 Fl Oz (Pack of 1)
It actually moisturizes pretty well, smells pretty amazing and its not greasy. but could make it easier to get the oil out.
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Reviewed in the United States on March 18, 2026

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