2010年12月1日星期三

Vacuum gate valves

Vacuum gate valves have a huge variety of uses in modern appliances. Indeed, vacuum in general is a force that is used for a number of reasons. Beyond the obvious vacuum cleaner, vacuum is also used as a power source for a number of powerful appliances, such as car engines. Gasoline engines naturally create a source of vacuum, and this is what allows the entire brake system to work, as it amplifies the pressure that is placed on the brake pedal. Without the vacuum source, it would take a very long time to stop a car going at any high speed.
However, vacuum moves things indiscriminately, and in any appliance that’s designed to use it, there must be some way to filter out the general dirt and grime that naturally gets sucked in along with the air. Also, sometimes the pressure that vacuum creates is the purpose of the device, and not whatever the vacuum could be sucking. To go back to the car engine example, you don’t want the vacuum to be sucking any debris into the engine itself, and so you need the vacuum hose to be filtered so that the debris cannot harm the source of the vacuum.
From the original1Gate valve
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