Aladdin Automatic Bleeding Air vents New for 2009, this stylish range

of automatic radiator air vents from Aladdin are designed to save

energy, keep radiators hot-to-top, reduce corrosion and system noise,

as well as provide maintenance free radiators. The innovative

Hygroseal? technology (patent pending) with its long, leak-free life

provides a cost-effective solution to automatic radiator venting. The

valves are fully automatic, requiring no manual adjustment.