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Old 11-09-2014, 09:52 AM   #11
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Just wondering the mechanics of an anti siphon valve and it's intended purpose, if you don't mind a quick lesson.
Quick lesson--(Keeps POO POO out of the F/Water supply! Youroo!!
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Old 11-09-2014, 10:11 AM   #12
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It's really a back flow preventer. You have to have vaccuum for it to work which is impossible with a vent pipe. If the vent pipe blocks up then it woulds still be a preventer Vacuum breaks are only used on pressurized systems. This is no more the a black flow preventer. And Youroo, it is impossible for it to get into your fresh water system. Now get back in your treestand and get a deer.
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Old 11-09-2014, 10:18 AM   #13
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If you're having issues with it, others have cut the pex and installed two 90's and a small pex section effectively eliminating the valve altogether. That might be able to be done down low where the pex lines are accessible. Personally, I would go that route instead of tearing my shower off the wall. Just my .02
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Old 11-09-2014, 10:50 PM   #14
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Quick lesson--(Keeps POO POO out of the F/Water supply! Youroo!!
There not connected. Are you kidding or just have no idea.
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Old 11-09-2014, 11:15 PM   #15
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There not connected. Are you kidding or just have no idea.
They are if your water supply has a Y attached to it with a hose going to water inlet and hose going to black flush.
Conversely, EVERYBODY at the CG is attached to your black tank if you have no vacuum break and something goes wrong while you are flushing.

So yes, "they're" connected.
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Old 11-09-2014, 11:26 PM   #16
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actually it prevents a full black tank from backing up that line and leaking out by siphoning out. Mine is located behind the closet in the bathroom it is looped higher then the toilet and that is where the valve is they do have a piece of luan screwed on but if you remove the screws you can not remove it because it is to big to get out of the cabinet you can just see the valve in there but no way can you get to it.
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Old 11-09-2014, 11:35 PM   #17
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A simple vacuum break for garden facet will achieve the same thing. It is an issue if it is not used. Every CG could put one on the water supply but they are known to leak and drip so they don't to prevent wasted water.
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Old 11-10-2014, 05:32 AM   #18
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There not connected. Are you kidding or just have no idea.
I don't know how (YOU) hook up your (Black Tank Rinse) but most have a (Garden Hose Fitting) that people hook up a (Fresh Water Hose ) I would call this (Connected)! I also have a Very good Idea who has Not a Clue! Youroo!!
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Old 11-10-2014, 05:48 AM   #19
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actually it prevents a full black tank from backing up that line and leaking out by siphoning out. Mine is located behind the closet in the bathroom it is looped higher then the toilet and that is where the valve is they do have a piece of luan screwed on but if you remove the screws you can not remove it because it is to big to get out of the cabinet you can just see the valve in there but no way can you get to it.
Well mine is impossible to get out to I would have to cut it and reroute it through the basement area. Then just use a back flow preventer. I'm surly not pulling that whole shower out. just DUMB, DUMB, and DUMBER. I just wanted know where it was incase it ever leaked. Now I know thanks to B&B.....
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Old 11-10-2014, 08:30 AM   #20
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Ours starting leaking yesterday on 8282ws. While flushing black tank, we noticed water leaking in storage compartment and in the bathroom vanity/sink cabinet. Shut off water to look for leak, then noticed a small black backflow preventer valve connected to two water lines. Water was dripping from the top part of the device. This one appears to be easy to replace, screw on type to water lines. I attempted to take pictures, but couldn't get a clear pic with make or model number. Need to go back to get info for replacement.
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