Watts 0121517 1-1/4″ LF174A Lead-Free 80 PSI Relief Valve 3,605,000 BTU/hr

Description

Watts LF174A Lead-Free Pressure Relief Valve — 1-1/4″, 80 PSI, 3,605,000 BTU/hr

The Watts LF174A (SKU 0121517) is a high-capacity, lead-free pressure relief valve engineered for dependable overpressure protection in hydronic heating systems, boilers, and hot water applications. With a 1-1/4″ connection size, an 80 PSI set pressure, and a rated capacity of 3,605,000 BTU/hr, this valve is built to handle demanding commercial and residential heating installations.

The “LF” designation confirms lead-free construction, making this valve compliant with lead-free requirements for potable water and heating system applications. Watts is a trusted name in flow control and water quality solutions, and the LF174A continues that tradition with robust materials and reliable performance.

Key Features

• Lead-free (LF) construction for compliance with lead-free regulations
• 1-1/4″ connection size for straightforward installation on boilers and hydronic systems
• 80 PSI set pressure for precise overpressure protection
• High capacity rating of 3,605,000 BTU/hr to handle demanding heating loads
• Designed for use in hydronic heating, hot water boiler, and related HVAC applications
• Manufactured by Watts — a globally recognized leader in flow control and water safety

Specifications

• SKU: 0121517
• Model: LF174A
• Connection Size: 1-1/4″
• Set Pressure: 80 PSI
• Capacity: 3,605,000 BTU/hr
• Construction: Lead-Free
• Brand: Watts

Applications

• Hydronic heating systems
• Hot water boilers
• Commercial and residential heating equipment requiring overpressure relief