How to determine the pressure for pressure testing pipes using gas instead of water
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Seeking advice as stated in the title: The pipe material is PPH, with a wall thickness of SDR11 and an outer diameter of OD32. The medium flowing through it is softened water, and the operating pressure is 6.5 kgf. Compressed air is required for pressure testing on site; is it necessary to apply a pressure 1.5 times higher? Are there any relevant alternative regulations? Seeking guidance.
It’s not clear what standards you are following, but according to the standards for metal pressure pipelines, the water pressure should be 1.5 times the design pressure, while the air pressure should be 1.15 times the design pressure.
Can it be carried out in accordance with the \"Code for Acceptance of Construction Quality of Building Water Supply, Drainage and Heating Projects\"?
Find the corresponding container standards; in principle, the air pressure must be lower than the water pressure. From a safety perspective, it’s better to use water.