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  • Users: janie09
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  1. janie09

    How do you think the bi-directional sealing for the triple offset butterfly valve?

    I want to know if the triple offset butterfly valve must need bi-directional sealing? And if, how to realize it?
  2. janie09

    Why use welded steel valves in district heating system?

    Dear All, I want to know why use the welded steel ball valve and butterfly valves in the district heating system? What's the advantage? Thanks very much! Janie

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