Description
Watts F344276 1-1/2″ 340-3 Bronze Automatic Reseating Temperature & Pressure Relief Valve
The Watts F344276 is a heavy-duty, automatic reseating temperature and pressure (T&P) relief valve engineered for dependable overpressure and overtemperature protection in hydronic heating systems, hot water heaters, and boiler applications. Built with a durable bronze body, this valve is designed to open automatically when system temperature or pressure exceeds safe operating limits — then reseat cleanly once conditions normalize, minimizing system downtime and manual intervention.
Key Features
- Automatic reseating design — reopens and reseats without manual reset after an overpressure or overtemperature event
- Bronze body construction for corrosion resistance and long service life
- Maximum pressure rating: 150 PSI
- Maximum temperature rating: 210°F
- 3″ stainless steel (SS) thermostat for accurate, responsive temperature sensing
- Discharge line flood sensor included for added leak detection and system monitoring
- 1-1/2″ valve size for high-capacity hydronic and water heating applications
- Model series: 340-3
Specifications
- SKU: F344276
- Brand: Watts
- Model Series: 340-3
- Connection Size: 1-1/2″
- Body Material: Bronze
- Maximum Pressure: 150 PSI
- Maximum Temperature: 210°F
- Thermostat: 3″ Stainless Steel
- Includes: Discharge Line Flood Sensor
- Valve Type: Automatic Reseating Temperature & Pressure Relief
Applications
- Hydronic heating systems and boilers
- Domestic hot water heaters
- Commercial and residential pressure/temperature protection
- Systems requiring automatic reseating after relief events
Why Choose the Watts F344276?
The Watts 340-3 series is a trusted solution for HVAC and plumbing professionals who need reliable T&P protection without the hassle of manual resets. The included discharge line flood sensor adds an extra layer of safety by alerting to discharge events, helping prevent water damage and enabling faster diagnostics. The stainless steel thermostat ensures accurate temperature response, while the robust bronze construction stands up to demanding hydronic environments.
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