You don't. Just torque them to the proper setting.
knuckle threads are used in railway carriage couplings.
Unfortunately, the answer to that question is difficult to come by without knowing the location and use of the rotary couplings. The answer could be anywhere from $200-$2000. Please specify use for rotary couplings.
Pipe
Jon R. Mancuso has written: 'Couplings and joints' -- subject(s): Couplings, Joints (Engineering)
same
what is environment in zwinky how to get in whan you are banded
Yes, banded can be a past-tense form of the verb band. As in, "They banded together to face the challenge."
A banded tube is a variety of phytoclast consisting of micrometre-scale tubes with a banded intenal ornamentation.
Banded Killifish was created in 1817.
It may not be banded but it might be deleted.
Banded butterflyfish was created in 1758.
Banded angelfish was created in 1831.