Mating flange ID must match sleeve ID.
配套法兰内径必须与套管内径匹配。
When installing a pinch valve to a rubber, PVC, or any "slick" mating flange, we recommend that you install a metal serrated gasket between the two flanges to assist in the seal.
在安装夹管阀时，如果采用橡胶、PVC或任何“光滑的”配套法兰，则我们建议在两个法兰之间加装一个金属锯齿垫圈以增强密封效果。
The purchaser should specify the coating requirements for flange faces and other such mating surfaces of other types of mechanical connections.
业主需要制定法兰面的喷涂要求以及其他卡箍机械连接件的连接面喷涂要求。
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