Description
Product Overview
The Watts FV-4M1 (SKU 0590723) is a 3/4″ automatic air vent engineered for hydronic heating systems, steam systems, and other closed-loop piping applications where automatic air elimination is critical to system efficiency and performance. Rated for a maximum operating temperature of 240°F and a maximum working pressure of 150 PSI, this air vent is built to handle demanding residential and light commercial hydronic environments.
Why Automatic Air Venting Matters
Trapped air in hydronic and steam systems causes noisy pipes, reduced heat transfer, and potential damage to pumps and heat exchangers. The Watts FV-4M1 automatically purges air from the system without manual intervention, keeping water flowing freely and your system operating at peak efficiency.
Key Features
- 3/4″ connection size for easy integration into standard hydronic piping
- Maximum operating temperature: 240°F
- Maximum working pressure: 150 PSI
- Automatic float-operated air venting — no manual purging required
- Compact, durable construction suited for residential and light commercial use
- Trusted Watts quality engineering for long-lasting, reliable performance
Typical Applications
- Hydronic heating systems
- Hot water boiler systems
- Radiant floor heating loops
- Closed-loop piping and distribution systems
Specifications
- Brand: Watts
- Model: FV-4M1
- SKU: 0590723
- Connection Size: 3/4″
- Maximum Temperature: 240°F
- Maximum Pressure: 150 PSI
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