Automatic Air Vents
An automatic air vent is an air release valve that discharges air collected in a closed water circuit by a float mechanism and closes when water arrives.
It is used at riser tops, manifolds and the high points of boiler and radiator circuits. The product range includes brass and plastic-bodied, check valve and angle type models between 1/2″ and 2″.
Main Applications
- Riser tops
- Heating manifolds
- Boiler and combi circuits
- Radiator air venting
- Solar circuits
- Chilled water lines
Technical Data
| Type | Float automatic air vent |
|---|---|
| Connection | 1/2″, 1″, 1 1/4″, 1 1/2″, 2″ (product range) |
| Body | Brass or plastic (product range) |
| Check valve | Option with check valve (product range) |
| Form | Straight and angle types (product range) |
| Working pressure | Depending on model |
| Temperature | Depending on model |
| Accessory | Radiator bleed key set (product range) |
Material Options
| Part | Brass vent | Plastic vent | Vent with check valve |
|---|---|---|---|
| Body | Brass | Plastic | Brass (depending on model) |
| Suitable place | Boilers, risers | Radiators and light circuits | Points needing removal |
| Advantage | Durable | Light, economical | Removal without draining |
| Temperature | Depending on model | Depending on model | Depending on model |
Which material? The vent must be fitted at the highest point of the circuit in an upright position; the check valve type allows removal without draining the circuit. Pressure and temperature limits are confirmed per model.
Advantages
Works Automatically
- No manual bleeding
Quiet Circuit
- Prevents air noise
Reduces Corrosion
- Removes oxygen-rich air
Easy Maintenance
- Check valve option
Construction and Design Features
- Body and air chamber
- Float and needle mechanism
- Air outlet cap
- Threaded connection
Write with the connection size, circuit type and quantity; we will confirm a suitable automatic air vent from stock.
How to Choose?
- Choose the sizeDetermine the thread size at the connection point.
- Check the pressureChoose a model for circuit pressure.
- Fluid and temperatureState heating or cooling circuit.
- Body and check valveChoose brass, plastic or check valve type.
Complementary Products
Why ORFA?
Other HVAC Valves
Balancing Valves
Balancing valves balance heating and cooling circuits by ensuring each branch receives its design flow.
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Diaphragm Safety Valves
Diaphragm safety valves open when the set pressure is exceeded and protect closed heating systems against overpressure.
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Linear Valves
Linear valves are two-way or three-way globe type HVAC control valves used together with an actuator.
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Radiator Valves
Radiator valves are fitted to radiator supply and return connections to shut off or adjust the heating water.
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Rotary Valves
Rotary valves are HVAC control valves operating with rotary movement, used with an actuator for mixing and diverting.
Details →Get a quote for your project
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