旋启双瓣式底阀 Double disc swing foot valve ; Double discng foot valve ; doubldiscswingfootvalve
双阀瓣 DD
对夹旋启式双瓣止回阀 ZRD
注意：双阀瓣止回阀能够安装在水平或流向朝上的垂直位置。
NOTE: Twin Disc Check Valves can be installed horizontally or in the vertical position with flow up.
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.
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