Step 1: find out wher到多e the water is leaking. There i謝議s always a source of兵畫 water leakage. Generally, water 歌長pipes are embedded in the wa信腦ll. When the water pipe leaks, the w到船all is wet, but it is still po鄉從ssible to see where the water lea畫到k is. The water flows 算山from top to bottom, so if you廠老 follow the wet marks on the wall,報城 you can still find the leaking wate朋公r pipe.

Step 2: Mark the leaking wat對快er pipe. If it is said that the wate相化r pipe is indeed inside the wa作們ll, then workers must be asked男海 to punch holes and ope車吃n the wall. If the water pi司森pe is leaking outside the wa些吃ll, it is easy to handle. Che弟河ck what material the water pipe作用 is made of. Such as plastic, steel, PV分音 and so on.

Step 3: waterproof belt. You can b話紙uy this at a hardware store, 員城it's very cheap. Wrap a few湖唱 layers of waterproof t地藍ape (also called waterproof paper) 大河on the outside of the leaking water金高 pipe, then wrap a layer of foam開區 glue on the outside樂電, then wrap it with waterproof paper o不弟n the outside of the foam笑藍 glue, and then put it on the w小山aterproof paper Wrap the outer layer wi光紙th foam glue, and fina你讀lly put glass glue on it!

Pressure test
Mechanically connected plastic pi女子pes need to be subjec的友ted to six system suitability tests:放物 internal pressure test, ther雪小mal cycle test, bending test, 雪技pull-out test, cyclic 新嗎pressure shock test an章議d vacuum test. Plastic pipes c是樂onnected by hot melt only need to小風 do the first two .
The internal pressure test is the金謝 most commonly used test, which is gene謝會rally completed by the installatio樂理n company, the owner, and the projec照動t leader.

1. Tool testing tools
Including pressure test pump, adjustabl醫熱e wrench, hexagonal 道哥outer wire, raw mater船廠ial tape, plug, etc. Figure 1 is a sim畫市ple pressure test tool of 30cm squa要友re, including jack, pressure師家 gauge, water tank and con計議necting hose.

2. Preparation
2.1. Connect the cold an自風d hot water pipes to be test遠綠ed to form a circle with a 內通hose, and the pressu火麗re at this time is 0.
2.2. Seal the outlets e技他xcept the lowest out照國let of the pressure test pipeline文我 with plugs. It is recommended to us但藍e solid and durable copper pl業朋ugs and other metal plugs.

3. Pressure test
3.1. Open the water inlet v他身alve, slowly inject water from the lo鄉吧west water outlet of 生暗the pipeline, and tighten t樂女he pressure test pump switch數有 after fully exhausting the gas道文 in the pipeline.
3.2. Close the main water i跳看nlet valve and slowly incre道資ase the pressure of the pipeline. After些刀 the pressure is increased to the sp快如ecified test pressure, observe whether月黑 the joints and plugs are leaking少謝.
3.3. Welded pipes such as PPR, aluminum會下-plastic PPR, steel-plastic PPR,章什 etc. are kept for mor服飛e than 30 minutes, and non-we服作lded pipes such as aluminum-pla得國stic pipes and galva文河nized pipes are kept for 4 hours. At t男兒he end of the test time,高些 if the pressure drop does not上白 exceed 0.05MPa, it is qualified.師會

4. Pressure relief
After confirming that the pressure如美 test is qualified, conne爸要ct the end of the pipe to the wat路愛er distribution piece, supply water習要 at working pressure, turn on the又飛 water distribution 們訊piece in batches, and內船 check whether the water out會慢lets are unblocked.

5. Relevant standards and precautions鐘員
5.1. The test pressure should be 山器1.5 times the working pressu影兒re of the piping syst空照em, and should not be less than關電 0.6MPa. The pressure value is g謝車enerally between 0.8MPa-1.5MPa, no快雨t the larger the bett遠很er, and the longer the pres年民surization time.
5.2. The pipelines burie黑土d in the surface of the floor and 暗麗the walls must underg銀輛o a hydraulic test before sealing the來視 groove.
5.3. The pipe should電子 be fixed during pressur廠從e test, the pipe joints sho小弟uld be exposed, and the water outl木爸ets of the pipes should not be connect開服ed with water distribution appliances.師司
5.4. For pipelines connected by hot me從醫lt, the hydraulic test should be carr雨風ied out 24 hours after the pipeline in長鐘stallation is completed.
5.5. Other reasons for the unquali紙說fied test: the plug is not視費 installed properly, 物章and the shut-off valve type to熱媽tal inlet valve has qu雨視ality problems.