How to check and repair water leaks in walls or underground pipes

Many times will encounter home leaks and other problems, water leakage for a number of reasons, such as can be the lack of renovation caused by late hidden problems ah or waterproofing problems and so on the situation, according to the specific situation to solve the relevant problems. So how to check for water leaks at home, how to do water leaks at home, the following I will do a specific introduction it.

(A) how to check for leaks in the dark water pipes

Step 1 close the main valve at home, that is, there is a valve in front of the water meter, and then open the faucet at home for about 15 minutes, the main purpose of doing so is to be able to discharge all the water in the water pipe, and then close the toilet tank and washing machine and all the water intake switch with water storage function.

Step 2 Open the main valve of the water pipe and carefully observe if there is any movement of the water meter. If there is a problem with the needle moving, it means there is a leak in the water line. Next, perform a pressure test. The test value will determine which section of the water pipe is leaking.

In addition to this, you can also observe the ceiling in your home or go downstairs to your neighbor's house to see if there are water stains printed on the ceiling, that corresponds to the water mark is where the leak is. The easiest place to leak in the water pipe is at the connection, you can directly check the connection of the water pipe and install the connection with or without water leakage, and then repair it.

(B) test pressure how to operate

1, first we need to determine which section of the wall inside the water pipe leakage problem, and then combined with the home plumbing arrangement, especially the use of the installation of water pipes, through the water line diagram to understand the location of the joint, including the direction of the water pipe.

2, first turn off the house into the main valve of the water pipe. Next turn off all faucet switches in the house, all angle valve switches, and remove the water heater inlet pipe (to prevent damage to the water heater when pressurized). First remove a faucet for pressure testing, with a pressurizer to play 8 to 10 kg of water pressure for testing to see if the pressure, the results can not keep the pressure, the initial indication that the water mains suspected of leaking. Then continue to play air pressure test, the test results of the same drop pressure, you can determine the existence of water leakage from the water pipe.

(C) how to repair leaking pipes in the wall or underground pipes

First by the professional plumbing leak detection master is the use of pipe leak detector and thermal imaging detector equipment to determine the leak point, pipe leak detector in general, the basic detection method is, connect the host, headphones, sensors. Turn on the switch, wear headphones, place the sensor on the road above the pipe line, placed step by step according to the length of the pace, step by step listening, the closer to the leak, the stronger the signal, the farther away from the leak the weaker the signal, by comparing the signal strength between different points to achieve the purpose of detecting leaks. Then draw a circle to the floor tiles after shaving, you need to find the joints of the water pipes below, and then re-pair all these joints, and then seal the treatment, after processing and then buried the water pipes concealed into the ground, and then use the plugging treasure or cement mortar for smoothing, repair the waterproof and then restore the floor tiles.