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Watts 9D Series 34 Brass Dual Check Valve Backflow Preventer, Union Female NPT Inlet x Female NPT Outlet, Intermediate Atmospheric Vent, Compact Design, Vertical or Horizontal Install
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Watts 9D Series 34 Brass Dual Check Valve Backflow Preventer, Union Female NPT Inlet x Female NPT Outlet, Intermediate Atmospheric Vent, Compact Design, Vertical or Horizontal Install
The Watts Brass Dual Check Valve Backflow Preventer is designed to prevent the reverse flow of hot or cold polluted water from entering into the potable water supply.
Watts 9D Series 34 Brass Dual Check Valve Backflow Preventer, Union Female NPT Inlet x Female NPT Outlet, Intermediate Atmospheric Vent, Compact Design, Vertical or Horizontal Install
Item #: 44970259

Watts 9D Series 34 Brass Dual Check Valve Backflow Preventer, Union Female NPT Inlet x Female NPT Outlet, Intermediate Atmospheric Vent, Compact

Item #: 44970259

BHD 49

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The Watts Brass Dual Check Valve Backflow Preventer is designed to prevent the reverse flow of hot or cold polluted water from entering into the potable water supply.
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What Stands Out

Compact Design
The 9D Series features a compact design, allowing for versatile installation in tight spaces, while maintaining high performance in backflow prevention.
Durable Brass Construction
Constructed from high-quality brass, this dual check valve ensures longevity and resilience against corrosion, promising a reliable solution for preventing backflow in various plumbing applications.
Flexible Installation
Designed for both vertical and horizontal installations, this backflow preventer can adapt to various plumbing configurations, delivering excellent convenience and versatility for users.

Product Details

Shop the top-rated Watts 9D-M2 dual check valve with intermediate atmospheric vent in bronze at Ubuy Bahrain. Get the best deals on plumbing supplies.
Item Weight2 lbs (910 grams)

Who Should Buy?

Suitable For
  • Homeowners

    Ideal for homeowners looking to prevent contamination in their water supply from backflow issues.

  • Contractors

    Perfect for plumbing contractors needing reliable backflow prevention solutions in various installation scenarios.

  • Irrigation Systems

    Beneficial for those managing irrigation systems to ensure clean water supply and prevent cross-contamination.

Not Suitable For
  • Industrial Use

    Not suitable for large-scale industrial applications that may require more robust backflow prevention mechanisms.

Product Description

Watts 9D Series 34 Brass Dual Check Valve Backflow Preventer, Union Female NPT Inlet x Female NPT Outlet, Intermediate Atmospheric Vent, Compact Design, Vertical or Horizontal Install

About This Item

Introducing the Watts 9D-M2 Dual Check Valve with Intermediate Atmospheric Vent in a stunning 34-inch bronze finish. This check valve is an essential component for any plumbing system, providing reliable backflow prevention and ensuring clean and safe water supply. With its innovative design, the Watts 9D-M2 Dual Check Valve offers double protection against backflow, making it ideal for both residential and commercial applications. Its dual check valve mechanism guards against contamination by preventing the reverse flow of water, ensuring that your drinking water remains free from pollutants and chemicals. What sets this check valve apart is its intermediate atmospheric vent.

This unique feature allows for the release of air from the valve, preventing the build-up of pressure and potential damage. The atmospheric vent helps maintain optimal system performance, reducing the risk of leaks and maintaining water pressure. Crafted from high-quality bronze, this check valve not only delivers exceptional functionality but also adds an elegant touch to your plumbing system. The bronze finish not only enhances durability but also adds a touch of sophistication to any installation.

It is designed to withstand the test of time, providing long-lasting performance and ensuring that your plumbing system operates seamlessly for years to come. The 34-inch size of this check valve makes it suitable for a wide range of applications, providing versatility and convenience. Whether you are upgrading your home plumbing system or completing a commercial project, this check valve will meet your needs. Trust in the expertise of Watts, a renowned brand known for manufacturing reliable and high-quality plumbing products. This dual check valve is built to industry standards and undergoes rigorous testing to ensure performance and durability. Ensure the safety and purity of your water supply with the Watts 9D-M2 Dual Check Valve with Intermediate Atmospheric Vent.

Order yours today and experience peace of mind knowing that your plumbing system is protected against backflow and contamination.

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Customer Questions & Answers

  • Question: What is the purpose of the Watts 9D Series 34 Brass Dual Check Valve Backflow Preventer?

    Answer: The Watts 9D Series 34 Brass Dual Check Valve Backflow Preventer is designed to prevent contaminated water from flowing back into the clean water supply. This device acts as a critical safety measure in plumbing systems, ensuring that water intended for drinking or other clean uses remains uncontaminated. It's particularly useful in residential and commercial properties where irrigation systems or commercial equipment could pose a risk of backflow. By installing this valve, users can protect their water sources from potential pollutants.
  • Question: How does the dual check mechanism work in this backflow preventer?

    Answer: The dual check mechanism employs two check valves in tandem, which create layers of protection against backflow. When water flows in the intended direction, both valves open, allowing unobstructed flow. If there’s any attempt at backflow, the first valve closes to prevent reverse flow, and if that fails, the second valve acts as a backup. This redundancy significantly enhances the reliability of the system, making it suitable for use in a variety of applications, including irrigation and plumbing systems.
  • Question: What are the main features of the Watts 9D Series 34?

    Answer: The Watts 9D Series 34 features brass construction for durability and corrosion resistance, dual check valves for superior backflow prevention, and a compact design that's easy to install in tight spaces. Additionally, it includes a union female NPT inlet and outlet for straightforward connections. The intermediate atmospheric vent further aids in preventing potential water contamination. These features make it an excellent choice for both residential and commercial settings.
  • Question: Can this backflow preventer be used with both hot and cold water?

    Answer: Yes, the Watts 9D Series 34 Brass Dual Check Valve Backflow Preventer is suitable for use with both hot and cold water systems. Its robust brass construction is designed to withstand a range of temperatures, making it versatile for various plumbing applications. This adaptability allows homeowners and businesses to use it in a range of situations, from garden hoses to washing machines, ensuring safe and effective backflow prevention regardless of water temperature.
  • Question: How do I install the Watts 9D Series 34 backflow preventer?

    Answer: Installing the Watts 9D Series 34 backflow preventer involves first ensuring the plumbing system is depressurized. Next, you can make the connection using the union female NPT inlets and outlets, following standard plumbing practices. Ensure that the flow direction is correct, as indicated on the valve. It’s advisable to consult a professional plumber for installation if you're unfamiliar with plumbing systems, ensuring optimal performance and compliance with local codes.
  • Question: What maintenance does the Watts 9D Series 34 require?

    Answer: Maintenance for the Watts 9D Series 34 is minimal but essential for optimal operation. Regularly check for leaks or signs of wear, and ensure that the valves are functioning correctly. If water quality issues arise, it’s prudent to inspect the valve for blockages or debris. Keeping this valve in top shape is vital for ensuring it continues to protect your drinking water supply effectively and can help prevent costly repairs in the future.
  • Question: Is the Watts 9D Series 34 compliant with local plumbing codes?

    Answer: The Watts 9D Series 34 Brass Dual Check Valve Backflow Preventer is designed to meet many local plumbing codes and standards for backflow prevention. However, compliance can vary depending on specific local regulations. To ensure your installation is compliant, it’s best to check with local plumbing authorities or regulations regarding backflow prevention devices in your area, ensuring that you meet all necessary requirements.
  • Question: Where can I buy the Watts 9D Series 34 Brass Dual Check Valve Backflow Preventer?

    Answer: You can buy the Watts 9D Series 34 Brass Dual Check Valve Backflow Preventer at Ubuy in Bahrain. Ubuy offers a convenient online shopping experience, allowing you to find this essential plumbing component quickly. With its user-friendly platform, Ubuy allows for easy product searches and access to a variety of options, ensuring you find the right backflow preventer for your needs.
  • Question: What makes the compact design of the Watts 9D Series 34 beneficial?

    Answer: The compact design of the Watts 9D Series 34 is beneficial for installations in tight spaces where traditional valves may not fit. This space-saving feature makes it ideal for densely packed plumbing systems, providing flexibility and ease of installation in various locations, such as under sinks or in maintenance rooms. Its efficient size does not compromise its performance, making it an excellent option for effective backflow protection.
  • Question: Can the Watts 9D Series 34 be used in commercial applications?

    Answer: Absolutely, the Watts 9D Series 34 is suitable for both residential and commercial applications. Its robust construction and reliable dual check mechanism make it ideal for environments where backflow prevention is critical, such as restaurants, hotels, and industrial settings. Businesses can rely on this device to ensure the integrity of their water supply, protecting against any potential contamination while meeting industry standards.

Watts Check Valves Editorial Review

The Watts 9D-M2 Dual Check Valve with Intermediate Atmospheric Vent is a great backflow valve that works perfectly for applications such as pool fill valves and sprinkler systems. However, customers should be aware of the warning message on the product packaging, which states that it contains more than 0.25% lead and should not be used in any plumbing system providing water for human Consumption, such as for drinking or dishwashing. It may be a great product for specific applications, but customers should carefully check if it is safe for their intended use.

Customer Reviews & Ratings

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Pros

  • Perfect for applications such as pool fill valves and sprinkler systems.
  • Direct replacement with fast shipping for convenience.

Cons

  • Contains more than 0.25% lead, which means it cannot be used in plumbing systems providing water for human Consumption.

Platform Trust & Buyer Confidence

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4.6/5 148 reviews
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Maryam
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“The order arrived fast and in perfect condition”

2 June 2026 · via Trustpilot
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“I loved it. That was my second order, and I am already thinking of placing a third order.”

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“Trusted merchant”

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“Excellent quality and very fast delivery, I really appreciate your service, when you work good I will appreciate that, I am very satisfied , thank you”

13 June 2026 · via Trustpilot
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Lulwa
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“I like the package arrived safely”

17 June 2026 · via Trustpilot
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BHD 49

Order now and get it around Wednesday, August 12

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Features & Benefits

  • Prevents reverse flow of polluted water into potable supply.
  • Durable forged brass body withstands high temperatures and pressures.
  • Compact design for easy installation and maintenance in various setups.
  • Includes all necessary components for efficient backflow prevention.
  • Ideal for laboratory equipment, sterilizers, and dairy applications.
  • NPT female connections provide a secure, leak-free seal.

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