How to detect leakage in underground water pipes at home

The inspection method of underground water pipe leakage at home is: turn off all the faucets and the main valve of the tap water at home, and observe whether the water meter is moving.

Underground water pipeline leakage detection and maintenance, human reasons: mainly construction damage, in the road construction, trench excavation and other environments that can be used to large construction equipment, due to unclear disclosure or barbaric construction, etc., resulting in damage to the pipeline of construction machinery.

The material of the pipes in the city's main water supply network. It is divided into rigid material and flexible material, rigid is divided into cement pipe, cast iron, steel pipe, steel-plastic pipe, flexible pipe is divided into PVC, PPR, PE pipe, etc. Rigid pipes are generally the preferred material for major and important pipe networks.

In rigid pipes, cement pipes have been gradually withdrawn due to their cumbersome construction technology and emergency repair technology.

**Leaking** is the drain pipe that needs to be repaired urgently. Water leakage is generally a pipe gambling game, and then a pipe rupture. Most of the time it's a blockage, ask a professional to get through, they have special tools.

If you want to listen, you have to get up in the middle of the night and put your ear to the faucet.

The detection is as follows:

1. If it is a water pipe exposed to the outside and there is a water leakage, the detection method is very simple, you can wipe the surface of the water pipe clean, and then observe it to see which piece will be watery and which area is wet, which means that the water leakage point is in.

2. If the water pipe buried in the wall or in the ground is leaking, you can use a professional water leakage detector to detect, this instrument is mainly judged by sound, so the results of the detection are more accurate, after all, when the water leaks out, it will make noise.

3. You can do the pressure test, so that you can do one by one investigation, in the process of suppression, if the pressure value drops very seriously, it means that there is a water leakage problem in this water pipe, if the pressure value is normal, there is no water leakage.

Water leak repair

First, use a small hacksaw to see off the leakage, and the saw edge must be flat. Use sandpaper to gently sand the newly exposed port, but not too much. Then wipe the port clean with a clean cloth, apply the special glue to the port, let it dry for a while, and apply the glue in the "bamboo" joint at this time.

Finally, connect the port to the "bamboo" and turn it repeatedly until it is firm. The same way to connect the other end. Wait until all this is done before applying an appropriate amount of glue to the joints to ensure that the water pipe does not leak.

In the process of suppression, if the pressure value drops seriously, it means that there is a water leakage problem in the water pipe, and if the pressure value is unchanged, there is no water leakage. If there is a leak detector or leak stick, you can use the leak detection instrument to detect the leakage according to the direction of the water pipe at home to find the leakage point.

1. The underground water pipe is paved in a dark way, and we can directly see which side has watermarks and water marks. Look at the ceiling, or go downstairs and look at the ceiling of your neighbor's house to see if there are any water stains, and where there are water leaks.

2. In addition, you can also find the place where the interface, especially the joint connected to the water pipe and pipe fittings is most prone to water leakage. When repairing, you can combine the layout of the waterway, and through the layout drawing, you can know the location of the joint, including the diversion place and the direction of the water pipe, so as to find the leakage point more accurately.

3. There is also a water pipe leakage detector, which can accurately find where the water leakage occurs. Because there is a combination of floor drains, through the ears and eyes to observe, can comprehensively judge and analyze the location of the leakage and the size of the leakage, can accurately find the leakage point, this needs to be operated by professional personnel.

1. Close the main valve of the water pipe. (i.e. the water pipe switch in front of the water meter) 2, turn on the faucet in the room for 20 minutes, and turn off all the faucets after making sure that there is no water dripping again.

3. Turn off the water inlet switch of equipment with water storage function, such as toilet tank and washing machine.

4. Open the main valve of the water pipe.

5. Check whether the water meter is moving 20 minutes after opening the main valve, including slow walking. If there is movement, it is a water leak. If you don't move around, you'll probably be fine.

If there is a problem with the water meter or if the water pipe is slightly percolated, it may be difficult to determine. Therefore, it is recommended that the water pressure test experiment must be carried out after the construction, generally 8 kg, and the time is 20-30 minutes.

First of all, turn off the main switch of the water pipe, turn on the faucet in the room until the faucet is empty, and turn off the water inlet switch of the toilet tank and washing machine and other equipment with water storage function. Turn on the main switch of the water pipe, 20 minutes after opening to see if the water meter is moving, including slow walking, if there is walking, it is leaking, if there is no movement, it may be fine.

1.Open all the water outlets in the home, and then seal each outlet with a sealed material, and close the water valve switch that controls the main switch, which must be closed tightly, otherwise the data obtained will not be accurate. It is best to connect the pressure test pump for pressure test work, when testing the pressure of water purification, the air in the water pipe must be discharged from the feeling, if the pressure test within 30 minutes does not exceed the pressure, and at the same time there is no leakage at each connection, then the water pipe at home is qualified.

2.What happens if the water pipes pass the test and there is no leakage, but there are water marks in the cracks of the floor in the home? This is because when decorating the floor tiles, the decoration workers infiltrate a large amount of waste water into the cement mortar under the floor tiles, and when there is too much moisture, it will cause the moisture to penetrate into the relatively low places, which will lead to the water seeping out from the floor tile joints.

3.If the water pipe test confirms that the water pipe is leaking, then observe where the water seeps out, and finally confirm the direction of the water seepage, check it one by one, and re-destroy the floor and wall, and even affect the aesthetics of the house.

1.It is to confirm the approximate location of the specific leakage of the water pipe in our home. Then the ground of the site should be removed, and the demolition area should be relatively large, so that we can repair the pipeline.

2.It is to find the leaking pipe and find the specific leaking point. Then the part is cut open, wiped clean with a cloth, and later you can use a hot melt machine for hot melt connection. Because the water pipes in our homes are basically PPR pipes.

3.It is to suppress and confirm whether the pipeline we repair is qualified. When pressing, a manual pressure pump is also used for pressure, and the specific steps and operations of pressure are the same as above, at least to achieve.

Until the suppression is qualified, the pipeline repair can be ensured, and then the ground can be restored.

1.Before purchasing water pipes, it is necessary to estimate the amount of water pipes to avoid waste caused by buying more water pipes or shortages caused by buying fewer water pipes, which will affect the construction progress.

2.If it is a second-hand house or an old house, all the water pipes need to be replaced.

3.Before installing the water pipe, the water pipe and its fittings should be inspected to observe whether there are any problems such as damage or leakage. It also depends on whether the connection of the water pipe and fittings is firm, and the installation can only be carried out after confirming that there is no problem.

4.When installing water pipes, it is necessary to determine the direction first, and it is generally better to install water pipes to the top, but its transformation cost is more expensive.

5.After the installation of the water pipe, be sure to draw the installation drawing of the water pipe on the paper, so that the later maintenance and repair will be more convenient.

First connect all the hot and cold water pipes in the room into a circle, and before the actual operation of the pressure test, confirm again that all the plugs have been closed, including the main gate and the faucet, and then choose a water outlet at random for testing, during the test, shake the pressure rod of the pressure tester until the pressure exceeds about three times the normal value, keep it for more than 30 minutes, and the pressure value drops significantly, indicating that the water pipe is leaking.

Just look for your husband.

It is best to find a professional leak detection company to save worry and avoid the trouble of smashing a large number of bricks.

1. First of all, use the "spectrum mode" in the instrument to detect the entire pipeline. Through the sound of the headphones and the cursor signal display on the screen, find the suspected leakage point of the pipe. Through the detection of "spectrum analysis", abnormal sound and cursor signals were found at the location of the washing machine in the laundry room

The volume of the headphone sound increases, and the cursor signal of the instrument also increases continuously.

2. In order to ensure the accuracy of the location of the "suspected leakage point", continue to use the "filter analysis" mode in the leak detection instrument for detection and verification. After the "Filter Analysis" mode detects, the strongest signal is still displayed at the position of the washing machine in the laundry room, and it is more and more likely that it is the leakage point.

3. In order to ensure that nothing goes wrong, use the "Precision Measurement" mode in the advanced options in the "Filter Analysis" mode again to carry out the third verification test. The final instrument showed that the "fine measurement" showed that the height of the thick bar was highest at the location of the "suspected leakage".

Close the main pipe, suppress the test.