How to test the pressure of the PPR pipe?

How to test the pressure of the PPR pipe? IFAN will teach you. This is our Instagram Website:

In the process of PPR pipeline installation, pressure testing is a step that must not be sloppy. Generally, if it is related to accidents caused by irregular pressure testing, the manufacturer will not compensate. Today IFAN Xiaobian will discuss PPR testing with you. pressure method.

Pressure test steps:

Pressure test tool

1.The pressure test tool looks like a small toolbox. A pressure gauge is a machine used to measure the pressure strength in the water pipe. It composes of a jack, a water storage tank, a pressure gauge, and a connecting pipe. The working principle is the same in different styles.


2. Connect the hot and cold water pipes together with the hoses. The hot and cold water forms a circle and becomes a pipe. The pressure tester can connect to any water outlet. The pressure pointer at this time is 0 pressure.

Boiling Water

3. Turn on the main switch of the water, and then close the water valve of the pressure tester until all the air in the pipe is discharged from the pressure tester, until the bucket of the pressure tester is filled with water, if the pressure tester is normal, the pointer should point up Around 0.3. (The pressure on the first floor should be 0.3–0.4 and the tenth floor should be 0.3–0.28).

Pressure Test

4. Start the pressure test, shake the pressure lever until the pointer of the pressure gauge points to 0.9—-1, then stop, that is to say, the current pressure is 3 times the normal water pressure.

Control Time

5. The time to test the water pressure is: PPR, aluminum-plastic PPR, steel-plastic PPR, and other welded pipes for at least 30 minutes. It takes 4 hours for aluminum-plastic pipes and zinc transition pipes.

Don’t be idle during the pressure test. Check each joint and inner thread joint one by one. There must be no water seepage in the plug. Water seepage in the plug will directly affect the gauge needle of the pressure tester. The continuous drop of the gauge needle will lead to inaccurate inspection results.

If the needle of the pressure tester does not drop at all within the specified time, it means success. At the same time, it also shows that the pressure tester is also in normal working condition.



1. Before the completion of pipeline installation, a hydraulic test must be carried out to confirm whether the welding state is good and to eliminate hidden dangers.

2.The hydraulic test should be carried out 24 hours after the hot-melt connection. Before the pressure test, the pipeline should be fixed and the joint should be exposed.

3.The test pressure of the cold water pipe should be 1.5 times the working pressure of the piping system, but not less than 1.0MPa; the test pressure of the hot water pipe should be 2.0 times the working pressure of the system, not less than 1.5MPa.

4. The water meter should be turned off during the pressure test to avoid damage. It is advisable to use a manual pressure test pump or an electric pump to increase the pressure slowly, and the pressure test time should not be less than the specified time.

The above is the method shared by IFAN about how to test the pressure of PPR pipes. If you want to know more about PPR pipes, you can continue to pay attention to IFAN!



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