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Automatic Airless Air Vents


The Automatic Airless Air Vent is designed to discharge air from a water pipe system or radiator, when the fibre seals in the valve get wet they expand to stop water escaping after air has been removed. Due to their elegant design they are commonly used on radiators to overcome the problem of air lock; they should be at any point in the pipe work of the system where air and expansion gases accumulate and cannot be removed through the normal system venting arrangement. They can also be vented manually by hand by opening the thumb screw.


  • Nickel Plated Brass
  • ½” BSP Connection
  • Easy to Fit
  • Automatic & Manual Venting
  • Can be Vented by Hand
  • Ideal for Radiators
Material: Brass & Plastic Construction
Sizes:  ½” BSP Connection
Max. Pressure: 10 bar 
Max. Venting Pressure: 4 bar 
Max. Temperature: 85°C