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Depends on what you are doing. soldered is for copper water lines. Threaded can be for water, gas, or anything else.
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∙ 14y ago
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Difference between coupling and pipe union?
A coupling is a threaded or soldered solid fitting, a union is a fitting that joins two pipes and can be taken apart with wrenches.
Are outdoor spigots threaded or soldered on?
Outdoor spigots are always threaded and not soldered on.
Should you use a brass threaded male fitting to a PVC threaded female fitting?
no
Can brass be welded?
Nope, it can be brazed, soldered, threaded
What is plug - pipe fitting?
It is a round threaded disk shaped thing that screws into a tee or other "female" threaded fitting to " plug" it up.
Can you solder a threaded copper fitting?
Yes
What is the meaning of TOE in pipe fitting?
Threaded On End
How to remove lower trans line from radiator?
Should be a threaded flared fitting
What type of fitting do you use to connect PVC pipe to unthreaded galvanized pipe?
You can't. There is no fitting to do this. Galvanized has to be threaded.
What fitting is required to join copper with galvanized pipe?
A threaded copper fitting on the copper side, male or female, and the galvanized is screwed into it.
What is cross threaded mean?
Exactly what it says threads are crossed inside the female fitting
What kind of fitting must be used when connecting a threaded pulling elbow to emt?
A coupling
