1. Close the valve
Before the pressure test, close the main valve and the return valve of the pressure test pipeline.
2. Fill the pipe with water
Fill the pressure test pipe with water, and then exhaust the pipe. Check the seal after filling with water.
3, boost
When pressurizing, you need to use manual pump or electric pump to slowly increase the pressure of the pipeline. The time for increasing the pressure needs to be more than 15 minutes.
4. Observe
After raising the pressure in the pipeline to the specified test pressure (usually around 0.8Mpa), stop pressurizing and observe whether there is leakage or water seepage in the connecting parts of the pipeline. After stabilizing the pressure, as long as the pressure rise and fall does not exceed 0.05Mpa for half an hour, it is qualified.
5. Record data
After the pressure test is completed, all data must be recorded for future needs and signed for confirmation. The pressure of the
pressure test is generally around 0.6Mpa (6 pressures). The pressure standard is to ensure that the pressure drop does not exceed 0.05Mpa within half an hour after stabilizing the pressure, which is considered qualified.
Precautions for pressure
1. Too much pressure and too long pressure time will be bad for the pipeline. If the pressure exceeds 1Mpa or the time exceeds 2 hours, it will have an impact.
2. The general suppression standard is 6 pressures (0.6Mpa). If you are a high-level user, you need 8 pressures.
3. The heating pressure test can only be carried out after all waterway modifications are completed. The pressure test is to check whether there is any leakage in the waterway. Tap water generally runs at 1.5 pressures (0.15Mpa), so the test pressure only needs 6 pressures. (0.6Mpa), generally if the pressure drops less than 0.05Mpa 30 minutes after stabilization, it is considered qualified.
