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post #9 of Old 09-28-2011
Irwin 32
Join Date: Mar 2001
Location: Detroit Metro area
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kracor retention system holding tank

I too have a Kracor retention system type holding tank on my 1972 Irwin 32. Since Iam in the great lakes I will not be pumping overboard, but couldn't abide the recirculation type flush. I plugged the 3/4" recirculation fitting on tank and teed off the sink drain thru hull to the head pump thru an anti-siphon loop. I am much happier and there is no reason to repace the tank. My holding tank is a respectable 16 gallon capcity and doesn't leak.

Kracor holding tanks are still available: check out their marine catalog-
Hope this helps,

Irwin 32 Classic
L. St. Clair MI
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