1. Eliminate hidden dangers in the later stage: the waterway is a hidden project. The pressure test of the water pipe can accurately judge whether there is water leakage at the pipe interface and whether the water pipe itself is damaged, so as to avoid the later period due to the hidden danger of water leakage. trouble.
2. Check whether the installation pipeline interface and material are qualified: during the pressure test, if there is water seepage in the pipeline or joint, you need to find the cause, and then replace or repair it and continue the pressure test; after the pressure is completed, if the pressure tester (pressure gauge) does not drop at all or the drop is less than 0.1 within the specified time, indicating that the pipeline has no problems such as water seepage and can be accepted.