1. Turn off the main brake of the water pipe and let the water flow in the broken water pipe dry. The main gate of the residential area is usually in the stairwell and elevator room, and the switch is next to the water meter. Let the switch vertical water pipe be closed. The top and middle switches in the figure below are closed.
2. The angle valve or faucet is completely broken inside. All we have to do is cut the broken outer wire with a fine-toothed hacksaw. Put the saw blade into the broken water pipe, and we can see the broken broken pipe with the external thread. Fix the position of the saw blade on the inner wall of the broken pipe, and saw it back and forth by hand. According to the wall thickness of the broken pipe, in order to prevent the internal thread of the outer layer from being directly sawed, take out the saw blade when the internal thread of the outer layer is about to be directly sawed. It takes about 10 minutes to see it.
3. Now we have sawed a small hole in the broken pipe. Next, we will chisel out the broken end with a flat screwdriver and a small hammer. We aim the blade of a flat screwdriver at the pipe wall next to the cut just cut by the saw blade, and then hit the top of the wooden handle of the screwdriver with a hammer, so that the broken end can be easily removed. As long as a small opening is opened, all the back parts will fall off with a slight pinch of the screwdriver.
4. It is to install the angle valve or faucet. You need to buy the matching faucet or angle valve in advance. Before installation, you need to wind the water tape around the angle valve or tap, which can be slightly moistened with water for better winding. When winding, you should wind it counterclockwise. The part in the picture is the external thread direct head. Because I didn't take a picture when I repaired it myself before, I used this as a reference instead.
5. Gently rotate the corner valve or faucet wrapped with water tape clockwise by hand and install it directly on the inner thread in the wall until it can't be screwed.
6. Tighten the angle valve or faucet with a adjustable wrench. When screwing, the strength should be moderate, but not too strong. Otherwise, it will easily lead to screwing the screw, which will lead to water leakage.