Description
The Watts 0121522 is a 1-1/4″ LF174A series lead-free pressure relief valve engineered for reliable overpressure protection in hydronic heating systems, boilers, and hot water applications. With a factory-set relief pressure of 100 PSI and a rated capacity of 4,399,000 BTU/hr, this valve is built to handle demanding commercial and residential heating installations.
Key Features
- Lead-free (LF) construction for compliance with safe drinking water regulations
- Factory-set relief pressure: 100 PSI
- Rated BTU/hr capacity: 4,399,000 (4,399K)
- Connection size: 1-1/4″ (1.25″)
- Watts LF174A series — designed for hydronic heating and boiler system protection
- Automatic reseating after pressure relief event
- Durable, corrosion-resistant lead-free brass body
Application
The LF174A series relief valve is ideal for use on hot water boilers, hydronic heating systems, and closed-loop heating circuits where overpressure protection is required. The lead-free brass body ensures compliance with NSF/ANSI 61 and applicable plumbing codes for potable water system compatibility.
Specifications
- SKU: 0121522
- Model: LF174A
- Inlet Connection: 1-1/4″
- Set Pressure: 100 PSI
- BTU/hr Rating: 4,399,000
- Construction: Lead-Free Brass
- Brand: Watts
