| 摘要 |
The disclosure is of a fabricated ball valve body having a cylindrical center section with bearing blocks, which are welded therein, rotatably receiving the trunnions of a valve ball. Tubular end closures, of the same diameter at their inner ends as the center section, taper inward toward their outer ends to receive hubs welded therein. Support blocks are welded into the end closures so that when they are welded to the center section, the support blocks engage the bearing blocks and transmit trunnion loads therefrom to the downstream end closures.
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