Description
The Watts F383942 is a 1-1/2″ iron boiler pressure relief valve engineered to provide reliable overpressure protection in hydronic heating systems. Built to Watts’ exacting quality standards, this relief valve automatically opens to discharge excess pressure when system pressure exceeds the valve’s set point, safeguarding boilers, piping, and connected equipment from potentially dangerous overpressure conditions.
Key Features
- 1-1/2″ connection size for compatibility with a wide range of boiler and hydronic piping configurations
- Iron body construction for durability in demanding heating system environments
- Designed specifically for boiler pressure relief applications
- Automatic pressure-actuated operation — opens to relieve excess system pressure and reseats upon return to normal operating conditions
- Manufactured by Watts, a trusted name in flow control and water quality products
Application
The Watts F383942 is intended for use on hot water boilers and hydronic heating systems where overpressure protection is required. It is suitable for installation in residential and light commercial boiler applications. Always verify the valve’s pressure rating and temperature rating against your system’s operating parameters before installation.
Why Choose Watts?
Watts has been a global leader in the design and manufacture of products that manage and conserve the flow of fluids. Their pressure relief valves are recognized for consistent performance, quality materials, and compliance with industry standards — making the F383942 a dependable choice for HVAC professionals and plumbing contractors.







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