Feature of Gate Valve:
small fluid resistance, small washing and erosion from the medium on the sealing face; small force upon opening and closing; no limitation on the flow of medium, no turbulent flow, no reduced pressure; simple shape, short structure, good manufacturing technique, wide range of application; erosion and abrasion often occurs between sealing face, difficult maintenance; relatively big dimension, a certain period time for opening, long time for opening and closing; relatively complex structure
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