Watts F121499 1″ LF174A Lead-Free 100 PSI Relief Valve 2,635,000 BTU

Description

The Watts F121499 is a 1-inch LF174A series lead-free pressure relief valve engineered for reliable overpressure protection in commercial and residential boiler and hydronic heating systems. With a 100 PSI pressure rating and a generous 2,635,000 BTU/hr capacity, this valve is well-suited for high-demand heating applications where system safety and code compliance are critical.

Key Features

• Lead-free (LF) construction — compliant with low-lead content requirements for potable and heating system use
• 1-inch connection size for straightforward integration into standard boiler and hydronic piping
• 100 PSI set pressure for precise, reliable overpressure relief
• 2,635,000 BTU/hr rated capacity to handle high-output commercial heating systems
• Watts LF174A series — a trusted line of safety relief valves for boiler and hydronic applications
• Designed to open automatically when system pressure exceeds the set point, protecting equipment and occupants

Application

The Watts LF174A is ideal for use on steam and hot water boilers, hydronic heating systems, and commercial heating equipment where a reliable, code-compliant pressure relief device is required. The lead-free body construction makes it suitable for installations subject to lead-content regulations.

Product Specifications

• SKU: F121499
• Model: LF174A
• Brand: Watts
• Connection Size: 1 inch
• Set Pressure: 100 PSI
• BTU/hr Capacity: 2,635,000
• Construction: Lead-Free (LF)