China Double Ecentric and Double Flange Butterfly Valve - Factory, Suppliers, Manufacturers from China
China Double Ecentric and Double Flange Butterfly Valve, , , ,. The product will supply to all over the world, such as Europe, America, Australia,, ,, .
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There are often friends who do not understand the relationship between the specifications of “DN”, “Φ” and “”". Today, I will summarize the relationship between ...
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1. Clean the sealing surface of the butterfly valve and the dirt in the pipeline.
2. The inner port of the flange on the pipeline must be aligned and press the rubber sealing ring of the butterfly ...
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