Why do water pipes have to undergo pressure test i

2022-07-22
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Some people will find that the wall of their home is inexplicably leaking after decoration. This is a very disturbing thing. Do you know why? It is very likely that the water pipe was not subjected to the pressure test after installation. Therefore, let me talk about how to conduct the pressure test of the water pipe

some people will find that the walls of their homes are inexplicably leaking after decoration. This is a very disturbing thing. Do you know why? It is very likely that the water pipe was not subjected to the pressure test after installation. Therefore, let me talk about how to conduct the pressure test of the water pipe. 1. The preparation tools must be professional and complete. The special pressure test tools are mainly composed of Jack, pressure gauge, water tank and hose; The general pressure test is jointly completed by the project manager, the water pipe installation company and the owner. 2 pressure measurement method the pressure measurement method is divided into two steps. 1. Connect the cold and hot water pipes with hoses, and the cold and hot water will blend together to form a water pipe. At this time, connect the pressure tester to any water outlet, and the pressure pointer at this time is 0; 2. All water pipe passages shall be welded, and all outlets shall be blocked before pressure measurement, and the main valve of water inlet shall be closed; 3. When measuring pressure, shake the pressure rod of the jack continuously until the pointer of the pressure gauge points to 0.9-1.0; At this time, the pressure is basically about 3 times the normal water pressure. Don't think that the pressure measurement is over here. It must last for a period of time. Generally, PPR, aluminum plastic PPR, steel plastic PPR and other welded pipes are 30 minutes, which can only be exceeded by no less; Aluminum plastic pipe is the kind of copper joint, and its time is 4 hours; Galvanized pipe is also 4 hours. 3. Judge the results only after passing every detail. Don't idle during the pressure test. We need to carefully check each joint and plug, and there should be no water seepage at all; Because water seepage will affect the direction of the pointer of the pressure tester, you must pay attention to every detail, and you can't put it past it. Otherwise, if something goes wrong, it's your own trouble. If the pressure tester does not drop at all within the specified time, or the drop is less than 0.1, it can be said that the water pipe is good. After completing the above steps, the water pipe pressure test is over. Remember when installing the water pipe, and don't forget it

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