User Tag List

Thanks Thanks:  0
Likes Likes:  0
Page 1 of 2 12 LastLast
Results 1 to 10 of 13
  1. #1
    Seasoned Camper GD350M's Avatar
    Join Date
    Nov 2014
    Location
    Lafayette, LA
    Posts
    445
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Blank tank flush relocation

    Could you look to relocate were you put the main black tank flush connection in the storage compartment of at least the 350M? I not sure what the other compartment hookup areas look like, but on my 350M you have the black tank flush connection at the very top of the hookups. This is a problem area as water does drip from there as you are flushing the black tank and drips right down on top of the fresh water connection. This can cause cross-contamination with the fresh water system. I would like to have mine fixed as well, so that we don't inadvertently get sick from this.
    Stephen & Nikki

    2013 Ford F-250 SRW w/Firestone Ride Rite Airbags, B&W Companion Hitch,
    Titan XXL 50 Gallon Mid-Ship Fuel Tank and Viair Onboard Air.
    2015 Grand Design Momentum 350M
    2009 Club Car Golf Cart
    [SIGPIC][/SIGPIC]

  2. #2
    Fireside Member
    Join Date
    Sep 2013
    Posts
    94
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    You are flushing the black tank with fresh water, and there is an air break fitting in the line to stop the possibility of cross contamination if I am not mistaken.

    Given the problems with potable water coming from the municipality here in Canada anyway, I think in my opinion, that the governing body has already deemed this a safe practice and a suitable way of plumbing.

    Of course, you mileage may vary.

    Lost

  3. #3
    Seasoned Camper GD350M's Avatar
    Join Date
    Nov 2014
    Location
    Lafayette, LA
    Posts
    445
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Granted there maybe check and balance to insure that cross contamination doesn't occure, but those check and balance can fail...then I have crap back flowing into my fresh water connection that goes to my faucets. I'll take a picture of the area when I get home to show how it is designed.
    Stephen & Nikki

    2013 Ford F-250 SRW w/Firestone Ride Rite Airbags, B&W Companion Hitch,
    Titan XXL 50 Gallon Mid-Ship Fuel Tank and Viair Onboard Air.
    2015 Grand Design Momentum 350M
    2009 Club Car Golf Cart
    [SIGPIC][/SIGPIC]

  4. #4
    Fireside Member
    Join Date
    Sep 2013
    Posts
    94
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    If an air gap fitting fails,, poop cannot run up hill. Nor can a non pressurized tank back flow up a line.

    Just my 2 cents worth deflated to 1.5 Canadian.

  5. #5
    Long Hauler offtohavasu's Avatar
    Join Date
    Dec 2014
    Location
    Fountain Valley, CA
    Posts
    2,130
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    Yeah, I don't see how the poop water is going to back up in the flush connection. Maybe if you let one hell of a fart in the crapper it would.

  6. #6
    Seasoned Camper GD350M's Avatar
    Join Date
    Nov 2014
    Location
    Lafayette, LA
    Posts
    445
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Guess we all clean our black tanks different. I just insure mine is clean before I leave, that means I close the black tank valve and let the tank full with water, so that it can break up the dirty water in the black tank. But I guess I'm wrong in thinking that the water can contanminate my fresh water system. I'm sorry for posting the "non-complaint" now
    Stephen & Nikki

    2013 Ford F-250 SRW w/Firestone Ride Rite Airbags, B&W Companion Hitch,
    Titan XXL 50 Gallon Mid-Ship Fuel Tank and Viair Onboard Air.
    2015 Grand Design Momentum 350M
    2009 Club Car Golf Cart
    [SIGPIC][/SIGPIC]

  7. #7
    Fireside Member
    Join Date
    Sep 2013
    Posts
    94
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Stephen,

    Yes we all have different views on how "clean" your black tank needs to be. This wasn't picking on you in any sense.

    The manual clearly states "only use black tank flusher with valves open" as you could possibly burst a line/tank. Again, there is a open gap between the air gap fitting and the inlet line so even if it did back up or fail, there is no direct connection between the inlet line and the flusher line.

    Lost aka Derek

  8. #8
    Long Hauler offtohavasu's Avatar
    Join Date
    Dec 2014
    Location
    Fountain Valley, CA
    Posts
    2,130
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by GD350M View Post
    Guess we all clean our black tanks different. I just insure mine is clean before I leave, that means I close the black tank valve and let the tank full with water, so that it can break up the dirty water in the black tank. But I guess I'm wrong in thinking that the water can contanminate my fresh water system. I'm sorry for posting the "non-complaint" now
    It never hurts to voice a concern, as long as you take something away from it, then it's all good.

  9. #9
    Site Sponsor
    Join Date
    Mar 2014
    Location
    Virginia Beach, VA
    Posts
    251
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    When flushing the black tank, close the valve, forget about it and go watch the movie RV starring Robin Williams. You will get a good laugh. Oh yes, don't forget to open the valve
    Don & Judy
    Charlotte - SPCA Special


    2014 Reflection 303RLS
    2019 F350 Dually CC LB 6.7L

  10. #10
    BennyJR
    Guest
    Quote Originally Posted by GD350M View Post
    Granted there maybe check and balance to insure that cross contamination doesn't occure, but those check and balance can fail...then I have crap back flowing into my fresh water connection that goes to my faucets. I'll take a picture of the area when I get home to show how it is designed.
    Quick Note: Never use your fresh water hose to flush your black tank. just a good rule of thumb.

Similar Threads

  1. Level Up 3.0 Display Blank
    By CWSWine in forum General Discussion
    Replies: 7
    Last Post: 05-05-2018, 09:35 AM
  2. Blank tank flush
    By msdevery in forum General Discussion
    Replies: 9
    Last Post: 10-23-2017, 06:24 PM
  3. Bedroom slide light switch relocation
    By bgbdbrwn in forum Mods and DIY
    Replies: 10
    Last Post: 03-31-2016, 09:08 PM
  4. Relocation to Franklin, TN
    By 2825Matheny in forum Campgrounds, Destinations and RV Trip Planning
    Replies: 1
    Last Post: 11-28-2015, 02:05 PM
  5. Tailgate camera relocation?
    By Rondacker in forum Mods and DIY
    Replies: 0
    Last Post: 08-28-2015, 06:19 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

DISCLAIMER:This website is not affiliated with or endorsed by Grand Design RV, LLC or any of its affiliates. This is an independent site.