[FRIAM] Off the wall question about turbulence

[Prof David West]

When the washer drains, water flows for a bit, then you hear the pipe filling up and water comes out the top. Pause the flow, water drains quickly, start and pipe fills again. Cycle till rate of flow subsides.  

Question: can turbulence occur at the u-trap and cause a temporary blockage?  If yes, does the  turbulence occur because of the distance from entry to the u-trap?

Will ask plumber — but prior discussions of turbulence on the list made me think it might pose an interesting problem..

Dwest
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