Watts F274496 174A 3/4 in. 45 PSI 875,000 BTU/Hr Relief Valve

Description

The Watts F274496 is a Model 174A pressure relief valve engineered to provide reliable overpressure protection in boiler and hydronic heating systems. With a 3/4-inch connection size, a 45 PSI set pressure, and an 875,000 BTU/hr capacity rating, this valve is sized to handle demanding residential and light commercial heating applications.

Watts relief valves are a trusted standard in the hydronic and plumbing industries, designed to automatically discharge excess pressure before it can damage system components or create unsafe conditions. The 174A series is widely specified by mechanical engineers and HVAC contractors for its consistent performance and code-compliant construction.

Key Features

• Model 174A pressure relief valve by Watts
• 3/4 in. connection size for standard boiler and hydronic piping
• 45 PSI set pressure for precise overpressure protection
• 875,000 BTU/hr rated capacity
• Designed for boiler and hydronic heating system applications
• Automatic pressure discharge to protect system integrity
• Built to Watts’ high standards for durability and reliability

Specifications

• SKU: F274496
• Model: 174A
• Connection Size: 3/4 in.
• Set Pressure: 45 PSI
• Capacity: 875,000 BTU/hr
• Brand: Watts

Application

Ideal for use on hot water boilers, hydronic heating systems, and related pressure vessels where a reliable, code-compliant pressure relief device is required. Always verify set pressure and BTU/hr capacity against system design requirements before installation.