CN112283381A
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Plug valve with adjustable pre-tightening hard sealing device
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CN112283376A
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Ultralow temperature middle cavity self-pressure-relief bidirectional sealing gate valve
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CN111503289A
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Multifunctional valve
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CN111503298A
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Sealing structure of valve body and valve seat and gate valve
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CN111043345A
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Bisection ball valve
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Lifting type spherical gate valve
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High-temperature high-pressure high-wear-resistance bidirectional hard-seal floating ball valve
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Lifting plug valve
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A kind of rotation self-grind spool gate valve
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Forging metal seal floating ball valve
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CN106468361A
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Two-way all-sealed knife gate valve
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CN102829213A
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Multifunctional spring base for ball valve
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Rising stem knife-shaped gate valve
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Non-rising stem butterfly-shaped knife gate valve
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Gate valve, valve seat ring mounting process, special ejecting rod used in mounting
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