Product Overview and Main Function
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Product Name: 1/2 inch Brass Side Air Vent Valve
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Main Function: Automatically or manually releases unwanted air from a pressurized water system (such as heating systems, radiators, and pipelines). This helps prevent problems such as air locks, reduced efficiency, noise (banging), and corrosion.
Key Features and Attributes
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Material and Construction:
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Body: Forged brass. It offers higher strength, corrosion resistance, and durability compared to cast brass or other materials.
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Internal mechanism: The float is usually made of plastic, while the main seal is made of high-temperature-resistant nitrile rubber (NBR) or EPDM.
This ensures reliable operation and tight sealing.
Operation and Design
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Automatic operation: When air enters the valve chamber, the float drops, opening the outlet and releasing the air. When water enters again, the float rises and reseals the valve.
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Manual control: Includes a manual screw or cap that can be opened to intentionally release air, which is necessary for system maintenance or initial filling.
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Side discharge port: The discharge outlet is located on the side, allowing a hose to be connected so that released water can be directed to a drain or safe location. This is an important feature for clean installation and preventing water damage.
Performance and Specifications
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Pressure rating: Typically a maximum working pressure of 10 bar (~145 PSI). Always check the rating of the specific product.
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Temperature rating: Suitable for temperatures up to 110 °C (230 °F), meeting the requirements of most hot water and heating systems.
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Medium: Designed for water and glycol mixtures (with inhibitors).
Application Scenarios
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Hydronic heating systems: on radiators, manifolds, and boiler rooms
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Solar thermal systems
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Hot water recirculation systems
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Industrial cooling circuits
