Description
The Watts F274427 is a 3/4″ pressure relief valve factory-set to open at 35 PSI, providing dependable overpressure protection for hydronic heating systems, boilers, water heaters, and related plumbing applications. Engineered to Watts’ exacting quality standards, this relief valve automatically vents excess system pressure to safeguard equipment, piping, and connected components from damage caused by pressure excursions.
Key Features
- Factory-set relief pressure: 35 PSI
- Connection size: 3/4″ (inlet and outlet)
- Designed for hydronic heating, boiler, and plumbing system protection
- Automatic pressure relief — opens to discharge excess pressure, reseats upon return to normal operating range
- Manufactured by Watts, a trusted name in flow control and water quality products
- Compact, durable construction for long service life
Typical Applications
- Residential and light commercial boilers
- Hydronic heating systems
- Domestic water heaters
- Closed-loop plumbing and pressure vessels
Why Choose Watts Relief Valves?
Watts has been a global leader in products that conserve water, improve its quality, and protect plumbing and heating systems for over a century. The F274427 continues that tradition with a straightforward, reliable design that meets the demands of professional HVAC and plumbing contractors. Proper relief valve installation is essential to system safety — always consult applicable local codes and manufacturer installation instructions.
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