How to Conduct a Water-Tightness Test on PE Pipe and Fittings

PE pipes and fittings can be used in water supply pipelines. In addition, there are also UPVC pipes, steel pipes, gray cast iron pipes, glass-fiber reinforced plastic sand-casing pipes, and ductile iron pipes, among others. For the hydrostatic test of PE pipes and fittings, the test pressure shall not exceed the pipe’s pressure rating or 1.5 times the lowest pressure rating of any component in the system. Once the pipeline pressure reaches the test pressure, it should be held for a specified period to allow the temperature of the test medium inside the pipe to equilibrate with the ambient temperature of the pipeline. After both the temperature and pressure have stabilized, timing can begin. Under normal circumstances, the hydrostatic test should be maintained at the test pressure for 24 hours. At the end of the test, if no obvious leakage or pressure drop is observed, then...

　　PE pipes and fittings can be used in water supply pipelines. In addition, there are also UPVC pipes, steel pipes, gray cast iron pipes, glass-reinforced plastic sand-casing pipes, and ductile iron pipes, among others.

　　The test pressure for the water-tightness test of PE pipe and pipe fittings shall not exceed the pressure rating of the pipe itself or 1.5 times the lowest pressure rating among the components in the system. Once the pipeline pressure reaches the test pressure, it should be held for a specified period to allow the temperature of the test medium inside the pipeline to equalize with the ambient temperature of the pipeline. Timing shall commence only after both the temperature and pressure have stabilized. Under normal circumstances, the water-tightness test should be conducted at constant pressure for 24 hours. At the end of the test, if no obvious leakage or pressure drop is observed, the test is considered to have been passed.

　　PE pipes and fittings have become a highly desirable material for water supply projects due to their advantages, including low overall cost, ease of installation, excellent hydraulic performance, non-toxicity, corrosion resistance, resistance to low temperatures, and ability to withstand mechanical vibrations.

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