Thread: waste tank
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Old 10-12-2018, 07:55 AM   #13
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City: Seneca Lake NY
Country: US
Vessel Name: Bacchus
Vessel Model: MS 34 HT Trawler
Join Date: Nov 2014
Posts: 3,101
Originally Posted by Easting View Post
“Replace with a threaded/barbed fitting. The closest I could find was a 1 1/4" fitting, but I couldn't find a 1 1/4" through hull, so I necked it down to 1 1/8 using an adapter. Attach the hose, you need about 13 feet. I used sanitation hose.”

Sorry for thread drift. Is this a plastic tank in your boat? I would like to add an additional vent but not sure if a threaded barb will thread into a plastic tank. Don’t want to have to go inside of the tank for obvious reasons. (My boat is not a Mainship. )
Threaded ftg will work if there us an existing ftg and you csn increase hose size w a larger barb.
Sone tanks might have a pkugged fitting that can be removed and a barb inserted.
Tank walls are not thivk enough to drill & tap but there are fittings that do not require ibside access. I forget the brand name but would suggest a little Google searching or PM Peggie... aka Headmistress and I'm sure she can provide the retrofit fitting info.
2008 MS 34 HT Trawler
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