| 摘要 |
<p>BALL VALVE ASSEMBLY A ball valve assembly includes a ball valve housing formed of a single body having a passage extending therethrough with a first portion of the passage having a smaller diameter than a second portion of the passage. The second portion of the passage has an insert therein with its passage being the same diameter as the first portion of the passage. A ball valve is disposed within the housing to control flow through the passage extending through the ball valve housing. The ball valve has a spherical segment at each end of a substantially cylindrical connecting portion with each spherical segment engaging a removable seat in the passage in the valve housing. The connecting portion has a passage of the same diameter as the first portion of the passage in the valve housing with the connecting portion cut away at each end of the passage so that the periphery of the connecting portion is no greater than the inner periphery of each of the spherical segments. The connecting portion has a recess to receive a ball valve turning mechanism, which is mounted in the ball valve housing, with the recess being disposed substantially perpendicular to the longitudinal axis of the passage extending through the connection portion.</p> |
