Description
The Watts 0590722 FV-4M1-1/2 is a float-type automatic air vent engineered for reliable air elimination in hydronic heating and hot water systems. Rated for temperatures up to 240°F and pressures up to 150 PSI, this vent automatically purges trapped air from piping and system components — protecting pumps, boilers, and heat exchangers from air-related efficiency loss and noise.
Designed for professional installation in residential and light commercial hydronic applications, the FV-4M1-1/2 delivers dependable, maintenance-friendly performance. Its float-operated mechanism responds automatically to air accumulation, venting air without manual intervention and helping maintain optimal system efficiency.
Key Features
- Maximum operating temperature: 240°F
- Maximum operating pressure: 150 PSI
- Float-type automatic air venting mechanism
- Suitable for hydronic heating and hot water piping systems
- Helps eliminate air pockets that cause noise, reduced flow, and equipment wear
- Compact design for easy integration into existing piping layouts
Applications
- Hydronic heating systems
- Hot water distribution piping
- Boiler system air elimination
- Residential and light commercial HVAC hydronic loops
Specifications
- Brand: Watts
- Model: FV-4M1-1/2
- SKU: 0590722
- Max Temperature: 240°F
- Max Pressure: 150 PSI
- Type: Float-Type Automatic Air Vent
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