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Gray water pull valve question.
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01-28-2010, 07:17 PM
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JOHN EVANS
Senior Member
Join Date: Jan 2008
Posts: 114
i experienced the same problem with black and gray , i contacted dtrv and charles told me to pour 1 gal. of vegatable oil in the drain and toilet let them set for awhile and that would fix the problem if i did it a couple times a year
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