3 在预装配接头体螺纹和卡套上涂上润滑油，把管子插入接头体， (管子一定要插到底)用手旋紧螺母。
Saw off the suitable length of seamless steel tube 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.
Put the nut and the sleeve on the seamless steel tube. Pay attention to the direction of the nut and the sleeve.
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.
Tighten the nut until the sleeve catches the pipe. This turning point can be felt by increasing the tightening torque (pressure point).
5. After reaching the pressure point, tighten the compression nut by 1/2 turn.
Remove the preassembled fitting body and check the embedding of the sleeve edge. The visible protruding belt must fill the space of the end face of the sleeve. The sleeve can be rotated slightly, but not pushed axially.
7. For final installation, coat the threads of the joint body in the actual installation with lubricating oil and tighten the nut with it until the tightening force can be felt is increased.
● repeat 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.
Remove the pipe to check the fitting: the pipe at the end of the sleeve should have an even slight bump. The sleeve cannot slide back and forth, but slight rotation is allowed.
● cause of leakage
The pipe is not inserted to the bottom.
2 the nut is not tightened.