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Old 07-13-2018, 03:08 AM   #1
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Default Holding Tank Vent Filter Size?

Every time we flush/pump the head, we get a nice whiff of holding tank fumes. Seems like it's time to change out the vent filter. Anyone know what size it is? Next time I'm out there I can go digging, just wondering if anyone has ordered one of these recently and knows what to buy, so we can get an odorless next journey.
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Old 07-13-2018, 12:31 PM   #2
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I was told to change it once a year there all about the same size ?
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Old 07-13-2018, 03:40 PM   #3
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Quote:
Originally Posted by codingparadox View Post
Every time we flush/pump the head, we get a nice whiff of holding tank fumes. Seems like it's time to change out the vent filter. Anyone know what size it is? Next time I'm out there I can go digging, just wondering if anyone has ordered one of these recently and knows what to buy, so we can get an odorless next journey.
Would be a good idea to use some of this:
https://www.ebay.com/itm/Walex-RV-Ca...sid=m570.l1313
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Old 07-13-2018, 08:57 PM   #4
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Yeah, when we pump out next I'm going to start a regimen of holding tank probiotics and such, but I want to address the probably-not-replaced-in-19-years vent filter at teh same time.
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Old 07-14-2018, 12:22 AM   #5
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Also make sure the line from the filter to your overboard vent - when I replaced my filter this year I found the clam shell cover for the vent thru hull was salt encrusted. I used a coat hanger and air (after soaking with vinegar) to get it clear.
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Old 07-14-2018, 03:05 AM   #6
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Got out to the boat today and checked it out. So, there's actually no vent filter, just a vent line that goes up to a through-hull! I could just splice a vent filter in, but I think the real answer is just fixing the smell in there for now and seeing if that's enough long-term.
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Old 07-14-2018, 07:23 AM   #7
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If your line is 5/8, here is what you need to buy:
https://www.ebay.com/itm/Voker-Holdi...LH_TitleDesc=0
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Old 07-30-2018, 11:57 PM   #8
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Is the odor in the head or on deck?
If on deck, reducing the odor in the tank should fix it. If in the head, your vent line may be blocked, possibly by a corroded vent head, causing the increase in pressure in the holding tank to force gas back down the line into the head, instead of out the vent.
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Old 07-31-2018, 12:01 AM   #9
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It's on deck. Smells fine in the head.

We've gotten some stuff to put in the tank to break everything down and make the smell go away. Thanks!!
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Old 07-31-2018, 12:39 AM   #10
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Clean the tank out good and don't poop in it if possible...bag it!
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