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KR102226300B1
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Filter gate valve
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KR102204949B1
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A butterfly valve with rotary restricting
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KR102125942B1
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Butterfly valve with rectifier for filter basin
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KR102125943B1
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Butterfly valve with flushing for setting pond
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KR102104038B1
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butterfly valve of exclusive pump
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KR101969981B1
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Butterfly valve with means to identify and control position of disk
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KR101798941B1
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Check valve for improving pump efficiency
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KR101608419B1
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Butterfly valve with the disc open when the differential pressure reducing function
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KR101600956B1
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Closed automatically by a built-in auxiliary check valve butterfly valve
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KR101592449B1
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Sluice gate equipped with seesaw form of auxiliary cover for watertight
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KR101578180B1
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Sluice gate equipped with wedged auxiliary cover for watertight
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KR101578181B1
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Butterfly valves inclined to improve stability of the pipe
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KR101590549B1
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A butterfly valve with check valve having separation and elasticity fuction
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KR101608420B1
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Butterfly valve having a one-piece check valve cavitation protection
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KR101437120B1
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Packing forming method and packing forming apparatus of butterfly valve
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KR101456955B1
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Watertight structur of shaft housing in butterfly valve
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KR101440381B1
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Sealing structure of metal seat of butterfly valve
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KR101080139B1
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Butterfly type check valve by which a help disk is had built-in
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KR101061095B1
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Metal butterfly valve of rubber type
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KR100927361B1
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A butterfly valve improved airtight function
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