PN700 pipeline hydrostatic test
Thread Content
We have a DN700 pipeline here with a design pressure of 0.6 Mpa and a length of 230 meters; it needs to undergo a pressure test. We only have a small air compressor with a capacity of 0.9 m³/min. After working on it for a whole day, the pressure reached only 0.2 Mpa. How can we carry out this pressure test? What other methods are there besides using an air compressor?
Compressed air can be used; it usually has a pressure of around 8 kilograms, which is sufficient
The pressure of ordinary air compressors is 6 kilograms, and their flow rate is too low; for applications requiring higher pressure at larger pipe diameters, compressed air supplied by industrial air compressor units or larger compressors can be used, such as those used in long-distance pipelines.
The design pressure is 0.6 Mpa; the test pressure should be 0.69 Mpa. Moreover, with a height of only 230 meters, compressed air is sufficient. Using air compressors would be too expensive, making it uneconomical.
Buy a high-pressure nitrogen cylinder for inflation and pressure testing