Watts F275950 174A 1-1/4″ 100 PSI 4,399,000 BTU Relief Valve

Description

The Watts F275950 is a 174A-series pressure relief valve engineered to deliver dependable overpressure protection for commercial and industrial hydronic heating systems and hot water boilers. With a 1-1/4″ connection size, a 100 PSI set pressure, and a rated capacity of 4,399,000 BTU/hr, this valve is built to handle the demands of high-output heating applications where system safety is paramount.

Watts relief valves are trusted throughout the HVAC and plumbing industries for their precision manufacturing and consistent performance. The 174A series automatically opens to discharge excess pressure whenever system pressure exceeds the set point, protecting boilers, heat exchangers, and associated piping from potentially dangerous overpressure conditions.

Key Features

• Model: Watts 174A series pressure relief valve
• Connection size: 1-1/4″
• Set pressure: 100 PSI
• Rated capacity: 4,399,000 BTU/hr
• Designed for commercial and industrial hydronic heating and hot water boiler systems
• Automatic pressure relief to protect system components from overpressure damage
• Precision-engineered valve seat and disc for reliable, repeatable performance
• Durable construction suitable for demanding commercial environments

Applications

• Commercial hot water boilers
• Hydronic heating systems
• Industrial heat exchangers
• High-capacity heating equipment requiring overpressure protection

Specifications

• SKU: F275950
• Brand: Watts
• Model: 174A
• Inlet/Outlet Size: 1-1/4″
• Set Pressure: 100 PSI
• BTU Capacity: 4,399,000 BTU/hr
• Type: Pressure Relief Valve (RLF)