Description
The Watts F383484 is a 740 Series pressure relief valve engineered to deliver dependable overpressure protection in demanding hydronic heating and boiler applications. With a 1-1/4″ connection size, a factory-set relief pressure of 75 PSI, and an impressive rated capacity of 4,285,000 BTU/hr, this valve is sized for high-output commercial and industrial systems where reliable pressure management is non-negotiable.
Watts’ 740 Series relief valves are a trusted choice among mechanical contractors and HVAC professionals for their robust construction, consistent set-point accuracy, and long service life. When system pressure exceeds the set threshold, the valve opens automatically to discharge excess pressure — protecting boilers, heat exchangers, and associated piping from potentially catastrophic overpressure events.
Key Features
- Model: Watts 740 Series
- Connection Size: 1-1/4″
- Set Pressure: 75 PSI
- Rated Capacity: 4,285,000 BTU/hr
- Designed for hydronic heating and boiler system overpressure protection
- Automatic pressure relief to safeguard system components
- Heavy-duty construction for commercial and industrial service
- Factory-set and tested for accurate, repeatable performance
Applications
- Commercial and industrial boiler systems
- Hydronic heating systems
- High-capacity heat exchangers
- Steam and hot water heating equipment
Why Choose Watts Relief Valves?
Watts is a globally recognized leader in flow control and water quality products. The 740 Series is built to meet the rigorous demands of professional HVAC and plumbing installations, offering peace of mind through proven engineering and quality manufacturing. Specify the Watts F383484 with confidence for any high-BTU hydronic application requiring dependable 75 PSI overpressure protection.
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