Valve — a device designed to open, close or regulation of flow upon the occurrence of certain conditions (the pressure in the vessel, changing the direction of current environment in the pipeline). The flow (current) can be a flow of fluid (water, blood, liquid metals, etc.), gas (air, nitrogen, carbon dioxide, etc.), electrons or other particles in the pipe, the conductor, semiconductor, vacuum or other medium.

Inside the hard drive of the vacuum? A common misconception is the view that is inside the hard drive is vacuum. This view is fundamentally erroneous, in the hard disk is constantly supplied with air through special holes on the body (breath hole) from the bottom of the hard disk, and also through the valve on top of the hard drive (valve breath). The inner side of the hole covered with a filter (breath filter), which traps particles of dust and moisture.

Valve the hard drive serves as a key tool in the complex with breath hole to equalize the pressure sealed chamber (inside hard disk).

The valves come with a diaphragm and without it, the valve membrane called. hybrid.

How do you determine that the valve be replaced? A faulty valve will gray as clogged with dust and can no longer perform its functions, the presence of such a valve does more damage to the hard disk, which leads to various malfunctions. Serviceable the valve is normally bright black color.

Valve replacement is very simple to produce. You need to have the same top cover as for the faulty hard disk, then you need to swap them. Do not peel off the valve, this action will cause the valve useless

Also, keep the top cover as donors for separate valves, valves in this condition, quickly dry and harden, these valves will not perform its functions.

And that's what we have when a faulty valve: the pressure deforms the wrong pancakes hard drive.

So, how do you replace valve(top cover), with the least damage to the hard drive. In the laboratory for the recovery of information there is a special chamber or room within which is purified from dust particles in the air. Master dressed in special clothes, in order to best protect the hard disk from the ingress of dust particles.

At home you certainly will not achieve such purity, the only thing something like that can help, and this is disassembly of a hard disk in the bathroom and use a humidifier.

Prior to disassembly you should also save all the information you need, removing the seal can cause your hard disk useless.

If you saw that the hard drive still hit a particle of dust, in any case, do not blow on it! The maximum that can be done is to use a tidy sprintsovku for easy venting. Or, if you got one speck of dust can do nothing at all. At the start of the hard disk, the centrifugal force is likely to cast a speck of dust to the side and there it will catch the filter

Given the extreme seryeznoy fault valve clogging, especially in hard disk drives of WD's manufacturing, I would still took a chance and disassembled this hard drive to replace the valve, keeping all methods of care. Since a clogged valve almost always kills the pancakes hard disk no recovery options.

Disclaimer: This material, in any case, not a call to action. And posted for informational purposes only.

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