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Old 12-10-2005, 06:06 AM   #15
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We had the gray water smell (smelled like blackwater) problem with our coach. I agree that you should run water to fill each p-trap after emptying your tanks or after not using your coach for a while. What really did the trick for us was to just replace the vacuum breaks. They just screw off and screw a new one on. I guess with age the rubber may go bad. I replaced mine at the last homecoming in Toppenish and it seems to have taken care of any smells. Good luck.

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Old 10-02-2007, 07:59 AM   #16
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by F&D ABQ:
We have gray water odor and I know (at least one of) the cause(s): the flex line between the vacuum break fitting and the tank fitting (by the shower). The existing line is very flexible, like swimming-pool-vacuum hose but a little larger diameter; however, it's cracked. I got a replacement from Alpine, but it's a much sturdier and therefore stiffer hose. I've been delaying installing it for fear that it will not flex enough in cold weather and will snap off the ABS fittings at one end or the other. But somehow, before Quartzsite, I'll have to do something. </div></BLOCKQUOTE>

How/where do I access this hose and the vacuum breakers?

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Old 10-02-2007, 04:27 PM   #17
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this works
Replaced the vacuum break and filled the P traps faithfully and nothing worked till we installed 2 of these. Paid $39.95 so it pays to do some shopping. Best 80 bucks I have spent.
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Old 10-02-2007, 06:25 PM   #18
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I took a different approach based on advice from Gary and Renee--add bleach every time before I dump the grey water tank. I add about 1/2 cup bleach mixed with about 3/4 cup water to the grey water system -- spread around between the sinks, shower, and bathroom sink drain, and flush it with lots of fresh water. I usually do this before I drive the coach to the dump, or if sitting still, for a few hours before I dump so it gets sloshed around.

I used to have the H2S/hydrogen sulfide smell problem before I started adding the bleach. Haven't had a problem since. I use formaldehyhde-free holding tank deodorant in the black water tank so I haven't had a problem with it, but Gary tells me he adds bleach to the black tank, also, instead of holding tank deodorant and it works fine.

So if you aren't ready to add the swivel vents, which others have also told me works well, try a little bleach in your tanks and see if it works for you like it does for us. Just remember to mix it with water and flush it with a little fresh water because bleach can be corrosive to stainless steel.

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