For over a century and a half, one name has been synonymous with the safe and efficient movement of water in buildings and infrastructure across the globe: Watts Water Technologies. From the simple relief valve that protected 19th-century textile mills to today’s sophisticated digital mixing systems, the company’s history is one of continuous innovation. Within this world of complex plumbing, heating, and water quality systems, the reliability of a small, often overlooked component—the Duckbill valve—is what ensures precision, prevents contamination, and maintains system integrity.
This blog post explores the rich history of this American multinational and delves into the essential function of the Duckbill valve within its vast ecosystem of water solutions.
A Legacy of Safety and Innovation: The Watts Story
The story of Watts is a classic American industrial narrative, beginning in 1874 when English immigrant Joseph E. Watts founded the Watts Regulator Company in Lawrence, Massachusetts . He opened a small machine shop supplying parts and fittings to the local textile mills. His critical insight was born from a simple, powerful observation: “textile mill boilers shouldn’t explode” .
Joseph Watts invented a safety valve to prevent these dangerous boiler failures, a product that would not only protect workers but also lay the foundation for a global enterprise . This focus on safety and reliability has guided the company ever since. Over the years, Watts expanded its expertise, patenting innovative mixing valves to ensure safe water temperatures for showers and handwashing, and developing backflow preventers to protect building water systems from dangerous pathogens like Legionella .
Today, Watts Water Technologies, Inc. is a multinational corporation headquartered in North Andover, Massachusetts, and publicly traded on the New York Stock Exchange (NYSE: WTS) since 1986 . With over 4,800 employees and 42 production and logistics facilities worldwide, the company generated approximately $2.44 billion in revenue in 2025 . Its mission is clear: to provide innovative plumbing, heating, and water quality solutions that control the efficiency, safety, and quality of water within commercial, residential, and industrial applications .
The Duckbill Valve: A Simple Guardian of Complex Systems
The Duckbill valve is an elegantly simple check valve, typically made from flexible elastomers like rubber, EPDM, or silicone. Its unique, beak-like shape allows fluid or gas to flow freely in one direction under pressure. When forward flow stops or attempts to reverse, the flexible material instantly snaps shut, creating a positive seal that prevents any backflow. This self-actuating, automatic function requires no external power or moving parts, making it inherently reliable and maintenance-free in countless applications.
Within the vast Watts portfolio, which spans Plumbing & Flow Control, Water Quality, Drainage, and HVAC & Hot Water, the Duckbill valve is a critical component in several key areas .
Key Application Scenarios
1. Backflow Prevention Systems
This is perhaps the most critical application. Watts is a world leader in backflow preventers—devices that protect potable water supplies from contamination caused by reverse flow . In complex backflow assemblies, small Duckbill-style check valves can be used as an additional, highly reliable seal in specific configurations or as part of testable components, ensuring that contaminated water cannot be siphoned back into clean supply lines.
2. Water Hammer Arrestors
In commercial and residential plumbing systems, rapidly closing valves can cause a damaging pressure surge known as “water hammer.” Watts’ water hammer arrestors often utilize a flexible elastomeric component—functioning much like a Duckbill valve—to absorb this shock. The valve allows a controlled displacement of water into a sealed air chamber, cushioning the system and preventing pipe damage and noise.
3. Chemical Feed & Water Treatment Systems
In water quality applications, precise dosing of treatment chemicals is essential. Watts’ chemical feed pumps and injector systems often employ Duckbill valves as reliable, low-maintenance check valves. They ensure that chemicals like chlorine or pH adjusters flow in one direction—from the feed tank into the water stream—without any risk of backflow that could contaminate the chemical supply.
4. Condensate Pumps & Drainage Systems
In HVAC and hot water systems, condensate pumps are used to remove collected moisture. Duckbill valves are commonly integrated into these pumps’ discharge lines to prevent water from flowing back into the drain pan when the pump cycles off, ensuring efficient and trouble-free operation.
Related Watts Product Lines
While Watts does not typically sell the Duckbill valve as a standalone retail SKU to homeowners, these valves are integral to many of their professional-grade systems. The following product families are most likely to incorporate such components:
- Series 909 Reduced Pressure Zone Assemblies: Leading backflow preventers for high-hazard applications.
- Series LF800A Dual Check Valves: For residential backflow protection.
- Chemical Feed Pumps & Systems: For water treatment and pool chemical dosing.
- Condensate Pumps and Removal Systems: For HVAC and high-efficiency furnaces.
- ProTec Water Hammer Arrestors: To protect plumbing systems from pressure surges.
For maintenance professionals, finding the correct replacement part often involves referencing the specific pump or valve’s service manual and ordering the designated repair kit, which may contain one or more Duckbill-style check valves.
Where to Buy: Authorized Distributors & Global Contacts
Watts products are sold exclusively through a global network of professional distributors and retailers. They do not sell directly to homeowners, ensuring that customers receive expert advice and support .
1. Official Distributor Locator:
The best way to find a local supplier is to use the “Find a Distributor” tool on the official Watts website: www.watts.com.
2. Americas Corporate Headquarters (For Professional Inquiries):
For order inquiries, product selection assistance, or technical support, Watts maintains a dedicated support line .
- Address: 815 Chestnut Street, North Andover, MA 01845-6098 USA
- Main Phone: +1-978-688-1811
- Support: For plumbing, heating, and drainage inquiries, press “2” for technical support or product selection assistance.
3. Europe Headquarters:
- Address: Kollergang 14, 6961 LZ Eerbeek, Netherlands
- Phone: +31-20-26-26-700
4. Asia-Pacific, Middle East & Africa (APMEA) Headquarters:
Watts has a significant regional headquarters in Shanghai to serve the Asian market .
- Address: 26th Floor, the Crest, 500 West Yan’an Road, Shanghai 200050 China
- Phone: +86.21.2223.2999
5. Investor Relations Contact:
For corporate and financial inquiries .
- Diane McClintock, Chief Financial Officer: +1-978-689-6153
- Email: [email protected]
Recent News & Brand Recognition
Watts Water Technologies continues to be recognized as a leader in its industry and a responsible corporate citizen.
- Newsweek’s “America’s Most Charitable Companies” (March 2026): Watts was named one of Newsweek’s 2026 Most Charitable Companies, highlighting the measurable impact of the company’s philanthropic efforts in the communities it serves .
- TIME’s “America’s Best Midsize Companies 2025”: The company was recognized by TIME for its continued commitment to innovation, sustainability, and creating a great place to work.
- Strong Financial Performance & Strategic Acquisitions (Q4 2025): Watts reported strong results, with 16% sales growth, driven by acquisitions like Haws Corporation, Superior Boiler, and Saudi Cast. These moves broaden its product portfolio and expand its geographic reach .
- 150th Anniversary Celebration (2024): In 2024, Watts celebrated a monumental milestone: 150 years in business. The company marked the occasion with events at facilities worldwide, honoring its loyal customers and associates .
- Leadership in Responsibility: Watts was named one of “America’s Most Responsible Companies 2026” by Newsweek for the seventh consecutive year, earning an “All Time Champion” designation .
Conclusion
For 150 years, Watts Water Technologies has provided the essential components that make modern plumbing, heating, and water treatment systems safe, efficient, and reliable. Behind the sophistication of their backflow preventers and the precision of their chemical feed pumps lies the simple, dependable genius of components like the Duckbill valve—quiet guardians ensuring that water flows only where and when it should.
By understanding the legacy of Watts and sourcing genuine components through their network of authorized distributors, engineers, contractors, and maintenance professionals can ensure the systems they build and service continue to protect our most precious resource for generations to come.