Description
The Watts F121544 is a 1.5″ LF174A series lead-free relief valve engineered to provide dependable overpressure protection for hydronic heating systems, boilers, and hot water supply applications. Built to the LF174A design standard, this valve delivers consistent, code-compliant performance where lead-free construction is required by plumbing codes and potable water regulations.
Key Features
- Lead-free (LF) construction for compliance with low-lead plumbing requirements
- 1.5″ connection size for high-flow commercial and industrial installations
- 100 PSI factory-set relief pressure for precise overpressure protection
- 5,290,000 BTU/hr (5,290K) rated capacity for large-scale heating systems
- Watts LF174A series — a trusted standard in commercial hydronic and steam relief applications
- Designed for reliable, automatic pressure relief to protect system components
Product Specifications
- Brand: Watts
- SKU / Part Number: F121544
- Model Series: LF174A
- Connection Size: 1.5″
- Set Pressure: 100 PSI
- BTU Capacity: 5,290,000 BTU/hr
- Construction: Lead-Free (LF)
Applications
- Commercial and industrial boiler systems
- Hydronic heating and hot water supply systems
- Installations requiring lead-free valve components per plumbing code
- High-capacity heating plants requiring 5,290,000 BTU/hr relief rating
