Slowly open all ball valves to relieve air and water pressure. Loosen bolts on groove coupler and remove groove couple and cover plate from valve body.
Slowly open all ball valves to relieve air and water pressure. Loosen bolts on groove coupler and remove groove couple and cover plate from valve body.
慢慢开启所有球阀，释放空气和水的压力。松开沟槽连接器上的螺栓，从阀体上拆卸沟槽连接器和盖板。