Waterway acceptance of decoration literacy

2022-07-22
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Waterway pipeline construction is an important part of concealed works of home decoration. The construction technology of waterway pipeline is not in place, violations and other situations, which seem to be as small as sand, but in fact, there are endless disasters. The most important thing for waterway acceptance is to do a pressure test. In addition, there are many precautions, which are introduced one by one in this paper

the meaning of waterway acceptance

waterway pipeline construction is an important part of concealed works of home decoration. The construction technology of waterway pipeline is not in place, violations and other situations, which seem to be as small as sand, but in fact, there are endless disasters. The most important thing for waterway acceptance is to do a pressure test. The pressure test is to simulate the impact of water pressure on water pipes and other materials during normal use, so as to test the performance of water pipes and the tightness of installation

process of waterway acceptance

1. Pressure test

(1) open the water inlet valve, fill water slowly from the lowest outlet of the pipeline, and tighten the pressure test pump switch after fully discharging the gas in the pipeline

(2) close the main water inlet valve, slowly pressurize the pipeline, and observe whether the connector and plug leak after boosting to the specified test pressure

(3) PPR, aluminum plastic PPR, steel plastic PPR and other welded pipes shall be maintained for more than 30 minutes, while aluminum plastic pipes, galvanized pipes and other non welded pipes shall be maintained for 4 hours. When the test time is over and the pressure drop does not exceed 0.05Mpa, it is qualified

2. Water pressure relief

after confirming that the pressure test is qualified, connect the pipe end to the water distribution parts, supply water at the working pressure, open the water distribution parts in batches, and check whether the water outlets are unblocked

precautions for waterway acceptance

1. The cold and hot water pipes should be slotted separately and separated by more than 10cm to avoid mutual influence. (supervisor Wang specially reminded that the slotting cost of one slot, two pipes and two pipes is the same, and netizens must be careful not to be fooled by JS)

2. When the water pipes parallel to the wall are fixed with pipe clamps, the spacing between pipe clamps should be ≤ 1m, otherwise the water pipe will shake when the water flows through, and there will be noise, which will also reduce the service life of the water pipe

3. Ensure that the drainage pipe is unblocked, free of blockage and leakage

4. The distance between water pipe and gas pipe shall not be less than 50mm, and the distance between water pipe and electric pipe shall not be less than 50~100mm, and shall be fixed firmly with pipe clamps respectively

5. The connection of water supply pipes and accessories shall be tight. There shall be no leakage during the pressure test after installation, the water outlet shall be smooth, the water meter shall operate normally, the pressure test shall be maintained at 0.6-0.8mpa (about 6-8kg), and the pressure shall not drop for 20 minutes

6. The drainage pipe shall be unblocked without blockage or leakage, and shall be protected accordingly. The floor drain grate should be slightly lower than the ground. If there is a bathtub, its bottom should be higher than the drain bend

7. The distance between water inlets of cold and hot water valves should be correct and horizontal. All water inlets should be flush with the wall, hot on the left and cold on the right. Switches and valves should be installed smoothly and easy to use. The slotting below 30cm from the ground shall be waterproof

the main preparations for this step:

if the water circuit acceptance is done in the middle of the project, the owner also needs to check the site protection after completion. After the laying of the ground circuit, wooden blocks should be placed on both sides of the laid PVC pipe, or cement mortar should be used as slope protection to prevent workers from walking back and forth, trampling, and other safety accidents during construction

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