Description
The Watts F275600 174A is a high-capacity boiler pressure relief valve engineered for reliable overpressure protection in hydronic heating systems. With a 1-1/4″ connection size, a 30 PSI pressure setting, and a rated capacity of 1,682,000 BTU/hr, this relief valve is built to safeguard large commercial and industrial boiler installations from dangerous pressure buildup.
Watts is a globally recognized leader in flow control and water quality products, and the 174A series continues that tradition of precision engineering and dependable performance. This relief valve is designed to open automatically when system pressure exceeds the set point, venting excess pressure to protect the boiler, piping, and connected equipment.
Key Features
- 1-1/4″ inlet connection for straightforward installation on standard boiler piping
- 30 PSI factory-set pressure relief setting
- 1,682,000 BTU/hr rated discharge capacity for high-output boiler systems
- Automatic pressure relief operation to protect system integrity
- Durable construction designed for long-term hydronic system service
- Watts 174A series — trusted in commercial and industrial hydronic applications
Specifications
- SKU: F275600
- Model: 174A
- Connection Size: 1-1/4″
- Pressure Setting: 30 PSI
- Rated Capacity: 1,682,000 BTU/hr
- Valve Type: Pressure Relief Valve
- Application: Hydronic Boiler Systems
- Brand: Watts
Application
Ideal for use on commercial and industrial hot water boilers where high BTU output demands a large-capacity relief valve. The 174A series is a go-to solution for mechanical contractors and boiler technicians requiring code-compliant overpressure protection on demanding hydronic systems.









