Gate valves get their name from the internal mechanism by which water flows.
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Gate valves get their name from the internal mechanism by which water flows. The mechanism looks like a tiny door that moves up and down on a lever attached to a handle. Handles are spiral handles that move the gate up and down and open and close the valve as needs. They are best used in on/off applications where valves are not used frequently. They can be used in high-pressure and high-temperature environments,so they are often used in manufacturing.
Advantages of gate valves:
Because the opening and closing mechanisms are slow, no water hammer is caused.
Disadvantages of gate valves:
The screw mechanism for opening and closing the valves is susceptible to corrosion. Once corroded, the valve will not work properly. Gate valves should be used in the fully open or fully closed position but may be stuck in the partially open or partially closed position on some models. This causes the gate to vibrate, which may damage the valve. People with disabilities may have difficulty operating gate valves, and gate valves do not provide visual clues about the "on"or "off"position.
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