双瓣止回阀主要由阀体、阀瓣、阀杆及弹簧等重要零件组成，并采用薄型轻巧设计。

Double disc check valve consists of body, disc, valve rod and spring and other parts. The valve is designed with slim light weight.

youdao

双瓣止回阀主要由阀体、阀瓣、阀杆及弹簧等重要零件组成，并采用薄型轻巧设计。

Double disc check valve consists of body, disc, valve rod and spring and other parts. The valve is designed with slim light weight.

youdao