Drain line: the hydraulic components leaked oil into the return pipe or tank.
泄油管路:将液压元件泄露的油液导入回油管或油箱。
2
The emergency drainage device is an important device in floating roof tank, used to drain the overloaded water accumulated on the floating roof to ensure a safety for oiltank.
The method using movable metal baffle and control valve near water sealed well to block the drain of oiltank group is unreliable and it will widen flowing fire area.