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cite="mid:CAGayqovkVpZidNRgxn5svyqzYCUXjwW14jt9QsBdG7Bsdjbtvw@mail.gmail.com">
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<div dir="ltr">Seems to me that if the design of household drains
was sensitive to turbulence, someone would have figured out how
to fix it in the 19th century.
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<div>-- rec --</div>
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<p><TMI> <a
href="https://tpssupply.com/your-blog/f/%F0%9F%9A%BDplunging-into-the-past-a-brief-history-of-the-toilet-plunger%F0%9F%92%A9#:~:text=The%20ancient%20Greeks%20used%20a,we%20know%20it%20was%20invented.">Of
Plungers, Snakes, Toilet Jacks, Gong-Farmers</a> and the <a
href="https://en.wikipedia.org/wiki/Pythagorean_cup">Pythagorean
Cup</a></TMI><br>
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