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

阀体法兰突面上有聚四氟乙烯实体起垫片的作用。

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.

阀体法兰突面上有聚四氟乙烯实体起垫片的作用。

youdao