Description
Watts LF53L-125 1/2″ Lead-Free Pressure Relief Valve
The Watts 0121442 LF53L-125 is a 1/2″ lead-free pressure relief valve engineered to protect hydronic heating systems, boilers, and plumbing equipment from dangerous overpressure conditions. With a factory-set relief pressure of 125 PSI, this valve automatically opens to discharge excess pressure and closes once safe operating levels are restored — providing dependable, hands-free system protection.
Key Features
- Lead-free (LF) construction for compliance with low-lead content regulations
- 1/2″ inlet connection for straightforward installation on standard piping
- Factory-set at 125 PSI relief pressure for consistent, reliable overpressure protection
- Automatic reset operation — opens under excess pressure and reseats when pressure normalizes
- Compact, durable design suited for residential and light commercial hydronic and plumbing applications
- Watts quality engineering for long service life and dependable performance
Specifications
- Brand: Watts
- Model: LF53L-125
- SKU: 0121442
- Connection Size: 1/2″
- Set Pressure: 125 PSI
- Lead-Free Compliant: Yes
Applications
- Residential and commercial boiler systems
- Hydronic heating systems
- Domestic hot water and plumbing systems requiring overpressure protection
- Any closed-loop system requiring a reliable pressure relief device
