The slotting of the waterway should ensure that the buried pipes should not be exposed after decoration in the wall and the ground. It should be noted that the groove should be larger than the pipe diameter of 20mm. After the pressure test of the pipe is qualified, the wall groove should be filled with 1:3 cement mortar and the thickness of the pipe should meet the following requirements: the cold water pipe in the wall should not be less than 10mm, and the hot water pipe should not be less than 15mm. ㎜, the pipe embedded in the ground is not less than 10mm. If the pipeline is concealed in the floor surface layer or in the suspended ceiling, the concealed engineering acceptance should be done after passing the pressure test. Before the pressure test, the gate valve of the water meter should be closed to avoid damage to the water meter when pressing, and the end of the pressure test pipeline should be blocked and slowly injected with water. The pipeline should be laid horizontally and vertically, and joints and bends should be minimized to reduce hidden leakage points. The installation of connecting accessories should be firm and leak-free. At the intersection of cold and hot water, the cold water pipe is used as a bridge. The position of the pipe clamp and the slope of the pipe shall meet the requirements of the specification. All kinds of valves should be installed in the correct position and level, which is easy to use and maintain, and should be neat and beautiful. The diameter of the indoor exposed water supply pipes in residential buildings is generally between 15 and 20 mm. The hot and cold water interface for the shower faucet in the bathroom must be adjusted to the correct angle when installing the water pipe. It is best to buy the shower in advance and try it. In particular, it should be noted that the shower head is simply screwed on before the tiles are pasted, and then removed after the tiles are pasted, and then installed at the end. To prevent the occurrence of tiling, the water pipe interface has been fixed, and as a result, the brick will be planed because the angle problem cannot be installed. The water circuit should follow the principle of hot on the left and cold on the right, horizontal and vertical; when the hot-melt sleeve is about 1CM, the joint of the hot-melt device must be clear, and no sleeves or less sets are allowed; the height of the hot and cold water pipes from the ground is 40CM. It must be installed in a balanced manner, and there must be no offset. The distance between the water pipe and the gas pipe is not less than 50mm, and the distance between the water pipe and the electric pipe is not less than 50-100mm, and they are fixed firmly with pipe clamps respectively. The place where the gas pipe is to be connected shall be closed with thick white paint (the raw material tape cannot be used). When sealing the water pipe, adjust the parallelism of the water pipe, the center distance of the elbow, and the inner wire elbow to go out of the wall by 1.5-2 cm.
