| 摘要 |
A meter run has a meter tube fitting of a configuration which includes an annular cavity. The cavity has confronting faces spaced from one another. An orifice plate holder is received in axially aligned relationship therebetween so that flow must occur through the central orifice formed in the orifice plate. A meter tube insert is positioned within the meter tube fitting and includes reduced diameter confronting annular flanges having faces spaced from one another substantially the same amount as the spacing of the confronting faces of the cavity. An adaptor assembly includes an outer annular gasket, an annular main support body, an inner annular gasket, and an orifice plate. The orifice plate is mounted within the inner annular gasket, the inner annular gasket is mounted within a passageway formed through the main support body, and the main support body is sealingly mounted within the outer annular gasket. The outer and inner gaskets, respectively, concurrently sealingly engage the confronting faces of the fixture and the insert, respectively.
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