Valve, closing valves, check valves, butterfly valves, hydraulic control valves and valve of 304,306 materials.

闸阀、截止阀、止回阀、蝶阀、水力控制阀以及304、306材质的各种阀门。

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Problems about hydraulic control butterfly-valve are analyzed, and some irrational design and some improvement method are also put forward.

分析了循环水泵出口液控蝶阀控制回路存在的问题，提出了改进的措施。

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The main products are: gate valve, butterfly valve, ball valve, piston valve, globe valve, hydraulic control valves, pressure reducing valve such as the eight series over 100 kinds of specifications.

目前主要产品有：闸阀、蝶阀、球阀、柱塞阀、截止阀、水力控制阀、减压阀等八大系列100多种规格。

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