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04-08-2015, 12:36 PM
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#1
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Montana Fan
Join Date: Feb 2010
Location: Calgary
Posts: 351
M.O.C. #10119
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Black water tank back flow check valve
I had the back flow check valve replaced by a dealer last year while the trailer was in for other service. The plastic check valve is now leaking again, so I want to just get rid of it. Is there any harm in just replacing the valve with a braided hose, or something like it.
Has anyone replaced the check valve with a hose or piece of curved water line pipe or pvc? I assume the black tank water flush line is isolated from the rest of the water lines. I use an old garden hose connected to the black water tank sprayer water line, so if there is back flow my fresh water hose doesn't get contaminated.
Appreciate your thoughts.
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DPAM
2017 GMC Denali diesel, crewcab, 4x4, regular box.
2010 Montana 3150RL- Moving to Montana Package , Hickory Edition Package, wet bolts
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04-08-2015, 02:01 PM
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#2
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Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
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I took mine out and replaced it with a piece of pex tubing. When I use the black tank flush I have a backflow preventer like restaurants and campgrounds use on outdoor faucets that I use at the blank tank flush inlet in the convenience center. One looks like this: http://www.amazon.com/Homewerks-VAC-...flow+preventer It has a quick disconnect just like all my other water connections so it's just snap it in place and flush. I wouldn't operate without one, but I know some do.
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Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, replaced chairs, sun screens, added awnings, etc.
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04-08-2015, 03:07 PM
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#3
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Established Member
Join Date: Aug 2014
Location: Southern
Posts: 27
M.O.C. #14578
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Quote:
quote:Originally posted by DQDick
I took mine out and replaced it with a piece of pex tubing. When I use the black tank flush I have a backflow preventer like restaurants and campgrounds use on outdoor faucets that I use at the blank tank flush inlet in the convenience center. One looks like this: http://www.amazon.com/Homewerks-VAC-...flow+preventer It has a quick disconnect just like all my other water connections so it's just snap it in place and flush. I wouldn't operate without one, but I know some do.
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X2. I just cut the existing pex tubing long enough to directly connect it to the hose fitting. Took about 20 minutes.
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04-09-2015, 03:38 AM
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#4
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Montana Master
Join Date: Apr 2015
Location: Stafford Springs
Posts: 524
M.O.C. #17256
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__________________
Jason & Wendy
2014 Ford F-350 Lariat 6.7L PSD
2015 Keystone Montana 3711FL
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04-09-2015, 04:10 AM
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#5
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Montana Master
Join Date: Sep 2013
Location: Pensacola (mail forward service)
Posts: 3,198
M.O.C. #13740
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I took ours out and screwed in brass parts to connect the two pex lines together. Many ways to do it, but use a back flow outside the rig. John
__________________
2012 F350 6.7 L dually, 2013 3800RE with 6 pt leveling, Sumitomo 17.5" load range h tires, Samsung 18 cu ft residential fridge, 8k Morryde I.S. with disc brakes. Full timing since 2012.
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04-12-2015, 03:15 PM
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#6
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Seasoned Camper
Join Date: Apr 2015
Location: Farmington
Posts: 71
M.O.C. #17288
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Mine was leaking last year and I found that it was cracked. When I winterized the rig, I think I must have forgotten to blow out that line. I called the company and they sent me a new one.
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