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Does the NO-DES flushing system stir up sediment and particulate matter in parts of the distribution system outside the “temporary loop that is created when flushing with the NO-DES system?

April 26, 2017distribution flushing no-des outside Particulate sediment stir system

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Does the NO-DES flushing system stir up sediment and particulate matter in parts of the distribution system outside the “temporary loop that is created when flushing with the NO-DES system?

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(A) No, unless the NO-DES system is connected improperly. The NO-DES system was designed to be connected so that the direction of flow inside the main being flushed is in the opposite direction of flow of the distribution system. As an example, if the general distribution flow is 30 gpm traveling through a 6″ main being flushed, the NO-DES unit will circulate the water to its desired flow rate of 441 gpm in the opposite direction. The 30 gpm distribution system flow will be circulated through the NO-DES system and then continue on down the water main in its normal flow. See the below illustration.