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Installation and reinstallation of sleeve joints

Installation and reinstallation of sleeve joints

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The installation
1. Saw off the seamless steel tube of appropriate length to remove the burr at the end. The end face of the pipe shall be perpendicular to the axis, and the Angle tolerance shall not be greater than 0.5°. If the pipe needs to be bent, the straight line from the end of the pipe to the bend shall not be less than three times the length of the nut.
2. Put the nut and clip joint on the seamless steel tube. Pay attention to the direction of the nut and the sleeve.
3. Apply lube oil to the thread of the preinstalled fitting body and the clamp sleeve, insert the pipe into the fitting body, (the pipe must be inserted to the bottom) and tighten the nut by hand.
4. Tighten the nut until the sleeve catches the pipe. This turning point can be felt by increasing the tightening torque (pressure point).
5. When the pressure point is reached, tighten the compression nut by 1/2 turn.
6. Remove the preassembled fitting body and check the embedding of the sleeve edge. The visible protruding belt must fill the space of the sleeve end face. The sleeve can be rotated slightly, but not pushed axially.
7. In the final installation, apply lubricating oil to the thread of the joint body in the actual installation, and screw with the nut until the tightening force can be felt is increased.
Repeat the installation
All sleeve joints can be reloaded several times, but the parts must be clean and free of damage.
1. Insert the pipe into the connector body until the sleeve fits the cone inside the connector body, and tighten the nut by hand.
2. Tighten the nut with a wrench until the tightening torque increases sharply, and then tighten 1/4 to 1/2 turn. Check the detachable pipe to see if the assembly meets the requirements: the pipe at the end of the sleeve should have an even slight bump. The sleeve joint cannot slide forward or backward, but slight rotation is allowed.
Causes of leakage:
The pipe is not inserted to the bottom.
2. The nut is not tightened.
3. The pipe is scratched or not round.
The pipe is too hard.