PPR piping hydrostatic test what are the provisions

PPR piping hydrostatic test what are the provisions
Pipeline cold water pipe test pressure and hot water pipe test pressure are to comply with the provisions of the following by the PPR pipe plant to introduce the provisions of the pipeline hydrostatic test:
First, melt connection pipeline, pressure test should be completed to more than 24h in the interface, a total length of the pipeline pressure test should not be greater than 500m; second, before hydrostatic testing, the pipeline should be firmly fixed, joints must be exposed, in addition to the valve, pipe end connection of sanitary ware water distribution; third. The pressure should be pressure pumps, pressure gauge pump and pressure measurement should be installed in the pipeline at the bottom of the lowest point; fourth, in the pipe filled with water, the air inside the discharge tube, the outlet of water plugging and tightness inspection; fifth, slow boost, rising time should not be less than 10 minutes to set the test pressure regulator for 1 hours, should not leak test.
In the design of 1.5 times the pressure of D state, the regulator for 2 hours, check if no leakage, then the water pressure test for qualified.

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