During the installation of plumbing pipes and fittings, the hydraulic pressure test can be carried out in layers or in single sets.
Precautions For Installing Plumbing Pipes And Fittings:
The working pressure and test pressure of all pipelines are respectively: working pressure in a low zone is 0.4Mpa, the test pressure is 0.6Mpa, working in high zone and middle zone The pressure is calculated at 0.6Mpa, and the test pressure is 0.9Mpa. After the pipeline system is installed, check it comprehensively, check the installed pipes, valves, gaskets, fasteners, etc., all in line with the design and technical specifications. The fittings for pressure tests together with the pipeline are removed, replaced with temporary short pipes, all the teeth are blocked, and water is injected from the lowest place and deflated from the high place. Blow and wash the pipes that pass the pressure test until the dirt is washed away, and Do a good job of all purge cleaning records and test pressure records.
The test pressure of the plumbing pipe is 1.5 times the system working pressure, but it should not be greater than the allowable pressure of the pipe. The test should be filled with water slowly, and the seal should be checked after filling. The pressurization should be slowly raised to the test pressure by a hand pump. Stabilized for 1h, the pressure drop is less than 0.05Mpa and then reduced to 1.15 times the working pressure. Stabilized for 2 hours, conduct a visual inspection, and the pressure drop of no leakage does not exceed 0.03Mpa is qualified.
