封闭装置凸缘可用机械方法或焊接方法洽当接合。除非封闭装置本身是防漏的，否则必须使用垫圈或其他密封件。
Closure flanges may be mechanically seamed or welded in place. Gaskets or other sealing elements shall be used with closures, unless the closure is inherently leak proof.
该项包括在线仪器、流量计、调节阀、紫外光、泵、泵的密封件、过滤膜、垫圈和密封材料以及其他特殊的在线设备。
This would include in-line instrumentation, flow meters, regulating valves ultraviolet lights, pumps, pump seals, filter membranes, gasket and seal materials, and other specialized in-line devices.
调整阀门，棘轮，密封件，刹车片和其他组件。
Adjust valves, ratchets, seals, brake linings and other components.
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