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 Catalina/Capri 25/250 Sailor's Forums
 Catalina 25 Specific Forum
 Toilet holding tank vent problem		  New Topic  Topic Locked
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weluvlife
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166 Posts
Initially Posted - 07/12/2003 :  16:00:18  Show Profile  Visit weluvlife's Homepage
Hello,

Has anyone had sewage run up the vent hose while flushing the toilet?
I replaced the hose, checked for kinks and a clogged vent. It's almost as if the vent diameter is too small. When I disconnect the vent hose at the tank, it works fine. Only when I attach the 5 foot vent hose does liquid run up the hose.

Frusterated,




Mark Eichman
Lake Don Pedro,CA
'86 c25 TR, SK
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dlucier
Master Marine Consultant

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Virgin Islands (United Kingdom)
7583 Posts
Response Posted - 07/12/2003 :  19:06:23  Show Profile
If the vent hose is attached to the top of the holding tank, how is liquid getting up to it?

When my holding tank gets a little too full <img src=icon_smile_dead.gif border=0 align=middle> and I'm doing some serious heeling, I have seen a blue stream come from the vent outlet. That lets me know that it's time for a pumpout.

<img src="http://www.catalina25-250.org/c25sm.gif" border=0>Don Lucier<img src="http://www.catalina25-250.org/c25sm.gif" border=0>
<img src="http://im1.shutterfly.com/procserv/47b2d904b3127cce9f7cd9ffdf1d0000003010" border=0>
North Star SR/FK
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weluvlife
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166 Posts
Response Posted - 07/12/2003 :  19:29:53  Show Profile  Visit weluvlife's Homepage
Hello Don,

Your question is my question. The tank is only about a quarter full. Somehow I think the air is not excaping fast enough, and the water is chasing it out???? I'm going to try a larger diameter hose, or and or see if the elbow fitting at the tank is partially obstructed.

Thanks,


Mark Eichman
Lake Don Pedro,CA
'86 c25 TR, SK
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djones
1st Mate

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USA
56 Posts
Response Posted - 07/13/2003 :  07:48:16  Show Profile
When we first got Swept Away, we found the vent fitting itself totally blocked. We removed the hose, and used a small screwdriver, both from below, and above to clear the debris. There was a small metal screen in the vent that we removed. Now, we flush the line out occasionally by holding a water hose to the outside vent for a few seconds. (Holding tank cap open.) No problems since.

-don

Don & Freda Jones
"Swept Away" '83 C25 SR/FK
Charlotte, Southport, NC
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wmkoines
1st Mate

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56 Posts
Response Posted - 07/13/2003 :  08:58:25  Show Profile
We have had it come out of the vent when we were heeling and the tank was full.......

I would make sure that the vent line is on the top of the tank and that your tank is empty.

If you are saying when you disconnect the vent hose it works fine. I would take the vent cover and clean it. Maybe when your pumping you are filling the tank with pressure and the "stuff" is forced up. Can't see how.
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Leon Sisson
Master Marine Consultant

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USA
1893 Posts
Response Posted - 07/13/2003 :  16:01:53  Show Profile  Visit Leon Sisson's Homepage
While we're on the subject and for what it's worth. When I designed my holding tank setup, I decided on two 1" vent lines out the top centerline of the tank. They vent to atmosphere via nylon thru-hulls just below the whale-eye nav. lights. The aerobic bacteria (good bugs) get all the oxygen they can use. I don't expect to ever have a pressurized tank problem from a clogged vent.

-- Leon Sisson


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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.