A control valve system for a folding hatch cover
The present invention relates to a control valve system for a folding hatch cover, and more particularly, to a valve system for safely and efficiently controlling a folding hatch formed on an upper portion of a cargo hold such as a bulk vessel.
The hatch to facilitate loading and unloading of the contents is mounted on the upper part of the cargo hold of a ship carrying bulk cargo such as coal, cement, grain, etc. The hatch of such a cargo hold is folded and opened by using a hydraulic cylinder. There is a side rolling method of opening and closing a roller by rotating it on a rail.