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Old 05-16-2010, 11:47 PM   #11
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It looks like just a simple check valve and I recall reading a few reports of these things failing so they have their faults as well. It seems more like a solution looking for a problem. Making sure water is in the trap is pretty easy, fool proof and happens automatically every time you use it.
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Old 05-17-2010, 12:22 AM   #12
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Quote:
Originally Posted by ronhanson View Post
It looks like just a simple check valve and I recall reading a few reports of these things failing so they have their faults as well. It seems more like a solution looking for a problem. Making sure water is in the trap is pretty easy, fool proof and happens automatically every time you use it.
Hmm, funny as the picture in the FMCA magazine didn't look like just a simple check valve at all. I really don't see this as a check valve in the sense you think of. demonstration. There are several that show it and how it works. Also one that shows testing it with a column of water till it fails, Took quite a bit, I was surprised.
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Old 05-17-2010, 12:41 AM   #13
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There is also a discussion of the valve by a group of RVrs that have used it here The valve was developed in 2007 from what I can find and from what the gentleman in post 11 of the discussion points out there had been no reported failures of them as of 2009. If water was to back up against it, it actually just closes tighter.
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