Aladdin Autovents are guaranteed for 5 years

- The valves are fully automatic, requiring no manual adjustment, and will not leak in the unlikely event of failure as a Patented backup failure safety mechanism is incorporated. - They work when fitted at any angle. - 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 protected) utilises a ‘dual-seal positive valve closure’ which provides an extended, leak-free life. - Installing the valves is a simple DIY job that doesn’t require system draining, a ‘less than one minute’ operation. - Seals: The ½” BSP versions have EPDM O-ring seals which are sufficient, though some fitters prefer to use some plumbers tape. Micro versions generally require some plumbers tape to fit. - Operating pressure: to 10 bar. - Operating temperature: to 120°C.