• It has a solid one-piece PTFE liner that extends over the raised face portion of the flange face to serve as the gasket.

    阀体法兰突面上聚四氟乙烯实体垫片作用。

    youdao

  • It has a solid one-piece PTFE liner that extends over the raised face portion of the flange face to serve as the gasket.

    阀体法兰突面上聚四氟乙烯实体垫片作用。

    youdao

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