Stinking potty odor

[Stephen Hegyesi]

My 2008 40’ Hull #51 has developed potty odor.  We use fresh water flush, using our tank water.  Tracing down the origin, a local marine sanitation service and repair company traced it to the white fabric sanitation hoses.  The hose Beneteau used are labeled for use as sanitation and potable water.  This type of hose is not impervious.   Black sanitation hose with an outer shiny black skin is recommended.   Also the holding tanks thru hull discharge valve, droplets of stinking drown liquid squirts every time you open or close the valve.  I had this valve on our punch list but no repair was offered.   Has anyone contacted Beneteau or replaced their hoses?       

[Mike Mollison]

We have hull 846 from a year ago....have had some issue with smells and have resorted to giving the whole system a good flush very now and then by placing a hose in the deck pump out fitting while the hull valve that isolates the holding tank is open....has worked quite well.....will see what hoses I have and report back. No issue with the main hull outlet and the large valve.

[James Taylor]

James of Beneteau 43 hull#19.

We have no problem with the hose but we did just replace the macerator seacock due to leaking at the thru hull. We replaced that plastic seacock with a bronze seacock to ensure a like metal scenario. I am not sure why Beneteau decided to use plastic on the macerator discharge seacocks but they should stop. The plastic seacock had a bad internal seal and was leaking via the threads which may or may not have been stripped. Boats, in general, are under tremendous stress at  times(pounding into wind etc) and threaded plastic is not, in my opinion, a good choice for something as important as a seacock

[Harry]

I have a 2008 B40. I have the white hoses and have not had any issues with them. I did a little checking around the internet. I could not find any evidence that they are incorrect. Nor could I find any information on hose color indicating appropriate use. I also would be interested in what you find out.

I did have a problem with my macerator seacock. It  would leak when I opened it. I sprayed the valve area (the area near the white collar in the picture) with WD 40 while working the lever back and forth. The leak stopped. That was about a year and a half ago and no problems since.  I talked to the Forespar rep at a boat show and he sent me a replacement o-ring that I will install when ever I eventually have to take the boat out of the water.