Watts F274428 Valve

The Watts F274428 174A 030 FS is a 3/4-inch bronze boiler pressure relief valve designed for hot water heating and supply boiler applications requiring protection against excessive system pressure.

The valve features a 30 PSI pressure relief setting, 3/4-inch NPT female inlet and outlet connections, bronze body construction, non-metallic disc-to-metal seating, automatic reseating, and a manual test lever.

The FS configuration incorporates a discharge-line flood sensor using Watts SentryPlus Alert technology. The sensor is designed to detect excessive water discharge from the relief valve. A compatible activation or connection kit is required to use the sensor's alert functionality.

When replacing an existing boiler safety or relief valve, verify the required pressure setting, connection size, system application, and complete Watts part number before installation.

Key Benefits

• Watts part/order number F274428
• Series 174A
• 30 PSI pressure relief setting
• 3/4-inch NPT female inlet
• 3/4-inch NPT female outlet
• Bronze body construction
• Automatic reseating design
• Manual test lever
• Integrated discharge-line flood sensor
• Watts SentryPlus Alert technology
• Designed for compatible hot water boiler applications
• UPC 098268576740

Common Questions

What is the Watts F274428?
The F274428 is a Watts Series 174A 030 FS boiler pressure relief valve with a 3/4-inch connection, 30 PSI pressure setting, and discharge-line flood sensor.

What is the pressure setting?
The valve has a 30 PSI pressure relief setting.

What size connections does it use?
The valve uses 3/4-inch NPT female inlet and outlet connections.

Does the Watts F274428 include a flood sensor?
Yes. The FS configuration includes a discharge-line flood sensor using SentryPlus Alert technology. A compatible activation or connection kit is required for the sensor's alert functionality.

Does F274428 replace the older Watts 0274428?
Current Watts replacement information identifies the discontinued 0274428 174A-030 3/4-inch valve as replaced by the newer 174A 030 FS 3/4-inch configuration. System requirements should still be verified before replacement.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.

F274428 is the cross for 0274428