The device is essentially composed of a water tank a filter screen a drain valve a hollow bolt etc.

该装置主要由 水箱、 滤网、排水 阀、空心螺栓等组成。

A modular marine hydraulic oil storage device comprises a storage tank an oil filter a cut-off valve a hand pump and connecting pipes .

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。