| The valve can be used to control the electric actuators and why use hydraulic control? |
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Hydraulic valve usually in a large diameter valve, if use electric valve is not easy to drive, need a great deal of torque.
For example control the flow of water tower power plant cooling valve, big power plant the diameter of the general selection in 2 meters, 2 meters, how much force, so use electric valves can't drive. Another is the main steam power plant the door quickly shutoff valves, listen to name to also know, fast, or a principle, the hydraulic sustained. So fast. Another reason is that, electric valve by screw transmission, want to switch of the screw slowly turn. And hydraulic the transmission rod is direct ascension, sure to be fast. |
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