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Old 12-12-2019, 10:55 AM   #21
Carl n Susan
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Join Date: Oct 2005
Location: Carmichael - CA
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Originally Posted by JanCouch View Post
We bought a used 09 Big Sky. The one and only time we tried to use the BW tank cleaner, water shot from behind the shower wall onto the stairs.
Classic sigh of a broken anti-siphon valve. Replace it or bypass it and the flush is usable once again.
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2012 Montana 3700RL Big Sky Package towed by a 2015 Ford F350 6.7L PSD 4WD CC LWB

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Old 12-12-2019, 02:59 PM   #22
Sdexte
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Join Date: Sep 2019
Location: Sioux Falls
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Originally Posted by Sdexte View Post
I have a 2019 373RD and I do have the two white water lines coming up under the bathroom vanity with the black piece which I assume would act the same as a back flow preventer. I have had two occasions where it did leak, both times I believe was because of too high of water pressure when I was rinsing the tank. My questions are, why do the lines go up into the bathroom and then back down to the tank? If I have access to the pipes underneath can I shorten the pipes to connect them down there? If I decide to eliminate the black piece and use a back flow preventer at the water inlet what are the connectors I use to connect the two white lines together? Thanks I look forward to input.
Thanks for the information, I was successfully able to eliminate the black plastic vacuum breaker on the water lines under the bathroom sink and connect them in the basement with the 90 deg shark bite connectors and am using a brass vacuum breaker at the inlet. Definitely lots of knowledge on this site.
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Old 12-16-2019, 04:24 PM   #23
DebNJim B
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Join Date: Jan 2018
Location: Northville, NY
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Originally Posted by mindylinsdau@yahoo.com View Post
We apparently don't have one under our bathroom sink so we'll have to try plan B. However, I'm not sure what you meant by using a exterior one. Also, you said illuminate it, did you mean eliminate it? Your second solution has me confused, which isn't hard to do😏 Thanks for your help my friend.
Before you cut into walls, take a peek behind your convenience center. That's where mine is.
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