I never really understood the loop in the discharge line. If your discharge line feeds the tank on top of the tank, in the middle, how would the contents of the holding tank get back into the hose? I understand not everyone's setup is this way ... and I'm only chiming in because I'm about to plumb mine the way I described, I hope I'm not screwing something up. I don't like the idea of a vented loop in my discharge, complicated .. and potentially gross.
As to Peter's problem, my guess is the hose goes up before it goes down again, so there are always contents in the hose. Your joker valve isn't working well so the contents of the hose backwash into the bowl (IMO another argument in favour of ditching the vented loop in the discharge). The fix would be to fix/replace that joker valve and to make sure to pump the contents well clear so that if there is any backwash it's .. cleaner. I've never actually done my business on a boat before so I'm not the best person to be giving this advice, much less redesigning and installing my own system so if I'm off base I'de like to know! Steve Suhana, C&C 32 Toronto On Thu, Jul 11, 2013 at 8:27 AM, dwight veinot <dwightvei...@hfx.eastlink.ca > wrote: > ** ** ** ** > > Probably caused by siphoning action…do you have a vented loop in the > discharge line? Like this one: **** > > ** ** > > > http://ca.binnacle.com/Plumbing-&-Pumps-Plumbing-Hardware/c31_264/p2249/FORESPAR-1-1/2&%2334-VENTED-LOOP/product_info.html > **** > > ** ** > > ** ** > > Dwight Veinot**** > > C&C 35 MKII, Alianna**** > > Head of St. Margaret's Bay, NS**** > > ** ** > ------------------------------ > > *From:* CnC-List [mailto:cnc-list-boun...@cnc-list.com] *On Behalf Of *Peter > Delean > *Sent:* July 11, 2013 8:56 AM > *To:* **cnc-list@cnc-list.com** > *Subject:* Re: Stus-List Introduction and gastric reflux**** > > ** ** > > The “gastric reflux” of the head seems to be gravity related, and only > happens when the boat is moving in waters with some wave activity.**** > > ** ** > > The bowl half fills, requiring a “dry” flush to clear it again.**** > > ** ** > > Upon arrival, we had the holding tank pumped out, but haven’t tested > since. I suspect it has much to do with hoses and hose placement.**** > > ** ** > > If the boat is sitting, everything is fine.**** > > ** ** > > Peter Delean**** > > ****North Bay**, **ON******** > > Drifter II**** > > C&C 30 Mk1**** > ------------------------------ > > No virus found in this message. > Checked by AVG - www.avg.com > Version: 2012.0.2242 / Virus Database: 3204/5982 - Release Date: 07/11/13* > *** > > _______________________________________________ > This List is provided by the C&C Photo Album > http://www.cncphotoalbum.com > CnC-List@cnc-list.com > >
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