厦门科恒塑胶有限公司

xiamen keheng plastic co.,ltd

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Hydrostatic Pressure Testing Notification of PPR/PPH Pipes

2.4.1 Hydraulic test has to be performed sectional; tested length should be no longer than 500m.
2.4.2 Before test, make sure pipes are fixed, joints are not covered, and the whole system is independent from water outlet tools.
2.4.3 Pressure gage with tolerance 0.01Mpa needs to be installed in the lowest place of the system.
2.4.4 Fill water from lowest part of the system to remove the air and make watertight test.
2.4.5 Hand pump or electro pump is used to rise up the pressure. The process must be slowly, more than 10 mins.
2.4.6 After rising up to the test pressure, hold it for 1 hour to check if there is leakage. If the pressure lowers smaller than 0.06MPA, the result is qualified.
2.4.7 Hold the pressure 1.15 times of the working pressure for 2 hours. If the pressure lowers smaller than 0.03MPA, the result is qualified.
2.4.8 There must be no leakage in the system during test.
2.4.9 During 30 mins, if the pressure lowers down, it is allowed to raise up the pressure again 2 times.