How it works

Because the Aladdin Autovent is operated by radiator temperature fluctuation the valve cab be smaller than conventional type valves – yet still provide positive shut-off. The secret of the Aladdin valve lies in its use of a bi-metallic disc which is used in conjunction with a miniature float - the patented 'dual-valve' design.

The minimum size of a conventional ‘float on a lever’ (miniature ballcock) valve is severely restricted – if the lever is shortened the float mass has to be increased – conversely, if the float mass is reduced lever length has to be increased to maintain true functionality . . . whereas the thermally activated disc in the Aladdin valve applies a powerful force to operate the valve enabling it to be miniaturised.

The float design in the Aladdin valve still allows automatic priming of a newly installed system (removing the requirement to individually bleed radiators when performing this task), but unlike any other float valve the Aladdin has a unique, automatic safety cap that shuts down the valve (within 5 seconds) in the event of failure – the valve will then automatically re-set itself – often continuing to operate successfully without any maintenance required (whereas a particle in the valve seat of a conventional valve will require manual cleaning).

The speed-fit PTFE self-cutting thread seal is designed with the installer in mind, eliminating the requirement for PTFE tape to install the valve while providing a tamper-proof fitting.

Please Note
The H50 valve fits 1/2" BSP radiator tappings only.
To check your radiator thread size – see Q&A’s