Description
Watts F153614 3/4″ 40L-3 Temperature & Pressure Relief Valve
The Watts F153614 is a 3/4-inch temperature and pressure (T&P) relief valve from the trusted 40L-3 series, engineered to provide dependable overpressure and overtemperature protection for residential and light commercial boilers, hydronic heating systems, and water heaters. Rated at 150 PSI and 210°F, this full-size (FS) relief valve automatically opens to discharge excess pressure or heat before dangerous conditions can develop, safeguarding your system and occupants.
Watts is a globally recognized leader in flow control and water quality products, and the 40L series reflects their commitment to precision engineering and long-term reliability. The F153614 is a go-to solution for HVAC professionals and plumbing contractors seeking a code-compliant, field-proven T&P relief valve.
Key Features
- 3/4″ connection size for straightforward installation on boilers and hydronic systems
- 150 PSI pressure rating for robust overpressure protection
- 210°F temperature rating to guard against dangerous overheating
- Full-size (FS) discharge port for maximum flow capacity during relief events
- 40L-3 series construction built for long-term durability in hydronic and steam applications
- Automatic reset design — valve reseats once pressure and temperature return to safe levels
- Compact, industry-standard form factor for easy replacement and retrofitting
Specifications
- Brand: Watts
- SKU / Part Number: F153614
- Series: 40L-3
- Connection Size: 3/4″
- Pressure Rating: 150 PSI
- Temperature Rating: 210°F
- Discharge Port: Full Size (FS)
Applications
- Residential and commercial boilers
- Hydronic heating systems
- Hot water heaters
- Closed-loop heating circuits requiring T&P overpressure protection
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