| 摘要 |
Weldolets or threadolet type fittings are welded onto pipe while being clamped in position with a clamp assembly that includes a threaded bolt, a wing nut, a positioning star with tapered arms which can slide along the axis of the bolt, and a tapered swivel anchor that is pivotally connected to an end of the bolt. In operation, the fitting is positioned at a hole in the pipe. The swivel anchor and bolt are inserted through the fitting into the pipe. The positioning star is engaged with a free end of the fitting and then the wing nut is tightened to produce a forced engagement between the positioning star and the fitting. This positions the fitting into concentric alignment with the hole and orthogonal alignment with the pipe.
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