Description
The Watts F121558 LF174A is a 2-inch lead-free temperature and pressure relief valve engineered to deliver dependable overpressure and overtemperature protection in commercial and residential boiler, hydronic heating, and water heating systems. With a 75 PSI pressure setting and a rated BTU capacity of 7,770,000 BTU/hr, this valve is built to handle the demands of high-output heating applications.
Constructed with a lead-free design, the LF174A meets the requirements of lead-free plumbing codes and regulations, making it suitable for potable water and hydronic systems where compliance is essential. The 2-inch connection size accommodates high-flow installations, ensuring rapid pressure relief when system conditions exceed safe operating thresholds.
Key Features
- Lead-free (LF) construction for compliance with low-lead plumbing regulations
- 75 PSI pressure relief setting for precise overpressure protection
- 7,770,000 BTU/hr rated capacity for high-output commercial and residential heating systems
- 2-inch connection size for high-flow applications
- Designed for use on boilers, water heaters, and hydronic heating systems
- Automatic re-seating after pressure relief event
Specifications
- Brand: Watts
- Model: LF174A
- SKU: F121558
- Connection Size: 2″
- Pressure Setting: 75 PSI
- BTU Capacity: 7,770,000 BTU/hr
- Construction: Lead-Free
Applications
- Commercial and residential boiler systems
- Hydronic heating systems
- Hot water heating equipment
- High-capacity water heaters
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