How to clean the pipe used in PPR pipe fittings

How to clean the pipe used in PPR pipe fittings
PPR pipe in the pipeline after the completion of construction, is the need for cleaning and disinfection, before acceptance, water supply pipeline system should carry out water flushing, from the bottom up layer by layer to open the water inlet valve or leading to flush.
Note that the time of the discharge of water can not be less than l minutes, while the water faucet or inlet valve of the plan should not be greater than the calculation of the PPR pipe section of the equivalent of 1/4. Flush after cut off the water, open the system low drain pipe inside the water vent. Then after the pipeline flush, but also with a certain amount of free chlorine in water filled pipes for disinfection, but should pay attention to the disinfection of water in 24 hours after the detention to be fully emptied.
After disinfection in the pipeline open the water inlet valve to the pipeline water supply, water in the pipe network is the most distant point to take water samples, after the health supervision departments to be delivered to the use of qualified.

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