How are Union pipes installed in a pipeline?
The installation of a union in the pipeline eliminates the need to remove other pipes. The union consists of two female threaded ends, with a central nut holding the two ends together. Measure the length of the union joint with all three parts threaded together, subtracting from this measurement the width of the threads on each end of the union.
How are flexible joints used in water pipes?
Flexible Joint: Sometimes this joint is also called Bell and socket or universal joint. This joint is used at such places where settlement is likely to occur after the laying of the pipes. This joint can also be used for laying pipes on curves, because at the joint the pipes can be laid at angle.
When to extend restrained joint pipe during installation?
When restrained joint pipe is installed through a casing pipe, and if axial thrust movement is a concern or would represent a problem, the restrained joints should normally be fully extended during installation to minimize “take-up.”
When do you use a bell and socket joint?
Sometimes this joint is also called Bell and socket or universal joint. This joint is used at such places where settlement is likely to occur after the laying of the pipes. This joint can also be used for laying pipes on curves, because at the joint the pipes can be laid at angle. This is a special type of joint.
The installation of a union in the pipeline eliminates the need to remove other pipes. The union consists of two female threaded ends, with a central nut holding the two ends together. Measure the length of the union joint with all three parts threaded together, subtracting from this measurement the width of the threads on each end of the union.
Is there a preferred direction of flow in a pipe union?
When installing a union into a piping system, is there a preferred direction relative to flow, (which side gets the fixed half, and which side gets the coupling nut) or is it just a matter of whatever direction is most convenient at time of installation?
When restrained joint pipe is installed through a casing pipe, and if axial thrust movement is a concern or would represent a problem, the restrained joints should normally be fully extended during installation to minimize “take-up.”
What to do with Union Gas pipe fittings?
Screw the union’s other end nut onto the other pipe end, again tightening it with the wrench. Wrap yellow sealing tape twice clockwise around the union’s central thread for gas lines (white sealing tape for galvanized lines).
