介绍了一种适应于煤矿井下液压支架使用的高压、大流量、操作力矩小的先导式平面截止阀，并详细介绍了其工作原理、结构和使用性能特点。
A cut-off plane valve applicable for the hydraulic shield in the coal mine is introduced, which has the feature of high pressure, large flux and small handling moment.
组合式船用液压油储存装置，包括储油箱、油滤器、截止阀、手摇泵、连接管。
A modular Marine hydraulic oil storage device comprises a storage tank, an oil filter, a cut-off valve, a hand pump and connecting pipes.
主阀，截止阀或角阀结构，采用隔膜驱动，液压操作。
The main valve, globe or angle pattern, is diaphragm actuated, hydraulically operated.
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