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Introduction to the working principle of the Gate Valve

August 27, 2024
In physical and chemical experiments, gases such as oxygen, nitrogen, hydrogen, and argon are often used. These gases are generally stored in special high-pressure gas cylinders. When in use, the gas pressure is reduced to the required range of the experiment through a Universal Valve, and then fine-tuned through other control valves to allow the gas to enter the use system. The commonly used Universal Valve is a Gate Valve, referred to as an oxygen meter. Working principle of the Gate Valve
The high-pressure chamber of the Gate Valve is connected to the cylinder, and the low-pressure chamber is the gas outlet and leads to the use system. The indication of the high-pressure gauge is the pressure of the gas stored in the cylinder. The outlet pressure of the low-pressure gauge can be controlled by the adjusting screw.
Concealed stem elastic seat seal gate valve
When in use, first turn on the main switch of the cylinder, and then turn the low-pressure gauge pressure adjusting screw clockwise to compress the main spring and drive the film, spring pad and push rod to open the valve. In this way, the imported high-pressure gas enters the low-pressure chamber after throttling and decompression from the high-pressure chamber, and leads to the working system through the outlet. Turn the adjusting screw to change the height of the valve opening, thereby adjusting the amount of high-pressure gas passing through and reaching the required pressure value.
Universal Valve are equipped with safety valves. It is a device to protect the Universal Valve and make it safe to use. It is also a signal device for Universal Valve failure. If the outlet pressure rises automatically and exceeds a certain allowable value due to damage to the valve pad or valve or due to other reasons, the safety valve will automatically open to exhaust.
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