The Aladdin Micro auto vent fits 5mm threads The stylish and versatile range of Aladdin Hygroseal™ automatic radiator de-aeration valves are a new breed in automatic radiator venting. The innovative Hygroseal™ technology (patent pending) with its long, leak-free life, provides a cost-effective solution to automatic radiator de-aeration. 

Saves energy By keeping radiators hot-to-the-top you get the maximum output from the radiator which heats your room faster and saves energy. It also reduces corrosion, system noise and provides a maintenance free system - dispensing with the need for radiator keys. Omni-directional operation for panel and towel type radiators Automatic safety feature Also works on negative pressure systems The valves are fully automatic, requiring no manual adjustment, and will not leak in the unlikely event of failure as a backup failure safety mechanism is incorporated. 

Their one–way valve makes them suitable for use with radiators which can cycle into negative pressure, typically loft conversion radiators or on the suction side of the pump. The innovative Hygroseal™ technology (patent pending) utilises a ‘dual-seal positive valve closure’ which provides an extended, leak-free life. 

Simple Installation Installing the valves is a simple DIY job that doesn’t require system draining. Once the valves are installed the changing of the cartridge is a ‘less than one minute’ operation. So next time someone asks you 'How do I remove air in radiators?' - you'll be able to recommend this product to save them time and money.

Thread Size: 5mm threads 

Operating Pressure Range 0-10 bar 

Operating Temp. Range up to 120 deg. 

Size 16 mm diameter, 14 mm from tapping 

Fitting 9/16” spanner flats 

Seal Compression or fitter-applied thread seal