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It can sometimes be a little confusing as to which type of valve you need to purchase so hopefully this blog post will help to iron out any confusion. Firstly there are really only two different Aladdin valves available now, we used to stock a H50 and V50 valve but these are now obsolete and so if this is the type you are looking for, they have been replaced with the HV30C.
So let’s take the two different valves in turn:
Aladdin HV30C
The HV30C use Hygroseal™ technology (patent pending) to ensure that your radiators stay free of air. They have a long life and are leak-free and ensure that you don’t need to manually bleed your radiators on a regular basis. Not only does it save you from having to carry out this task, they also ensure that your radiators run more efficiently which in turn helps to reduce your energy usage, saving you money.
The HV30C has a 1/2″ BSP thread, this is the hole in the tapping at the top of the radiator and is approx 20mm in diameter. You should be able to fit your index finger inside the tapping. In the tapping there will be a plug which is a chrome hexagonal valve or a plug with a square hole inside.
If this doesn’t sound like your radiators then you need the Micro.
Micro
The micro works using the same concept, basically the valve opens when there is air in the radiator. Once the air has been forced out the valve will close. This is why we can state that they do not leak. One of the other benefits is that you do not have to drain your system to fit them and anyone with confident DIY skills can perform the installation.
The micro comes with an adaptor included so that it fits a wide range of radiators, it doesn’t sit flush to the radiator as the HV30C so isn’t as aesthetically pleasing but they tend to be used mainly in older style radiators and so actually they fit in quite well.
For most people, if the HV30C isn’t the right valve then the micro usually is. There are rare occasions where a non standard radiator has a slightly different requirement and in these cases we are unable to help.
Find out more about self bleeding radiator valves from aladdin