...底阀 英文名称： Tanks for the transport of dangerous goods - Tank equipment for the transport of liquid chemicals - Foot valves 标准组织： 【DIN】德国标准 正文语种： 英德双语 国标分类： 【T58】油罐汽车 原版报价： ICS分类： 【13.300】危险...
It has a bivalve shell, two strings which move the valves against one another, and a small pump that expels water (he is still working on the best design for the foot).