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Old 05-25-2015, 09:00 AM   #41
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Join Date: Oct 2007
Posts: 14,908
When I designed our 90/90 the sink was located directly above the sink sea cock, rubber hose between.

With the sink (10 inch deep) piping above the WL , any clog was simply removing hose from under sink and jamming a broom handle down to clear grease.

In 22+ years of living aboard , only can remember the need once.

My guess is any accumulated grease gets eaten by always feeding sea creatures.

An above the WL discharge would stay visible , for much of winter on top of the ice. UGH!

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