Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > RV SYSTEMS AND TECHNOLOGIES FORUMS > RV Systems & Appliances
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 05-22-2023, 07:03 PM   #1
Junior Member
 
Join Date: May 2023
Posts: 7
City water leaks behind flange

Hi,

I just replaced a broken city water fitting. While doing a leak test, I noticed there is a little leak behind the flange (between the flamge and the RV wall) when I disconnect the hose from the RV at first (before disconnecting the end from the tap). Otherwise, if the hose is disconnected from the tap first, there is no leak at the RV end. It looks like the pressure needs to be released before disconnecting the hose from the RV to avoid that leak. I tried with 2 fittings and it does the same behavior. Is that normal?

Thanks!
xben is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 05-23-2023, 03:55 AM   #2
Senior Member
 
Argosy's Avatar
 
Join Date: May 2004
Location: MI
Posts: 2,066
Doesn't the hose leak at the tap end when you loosen it first? The pressurized water is going to escape wherever it can.
Argosy is offline   Reply With Quote
Old 05-23-2023, 05:06 AM   #3
Junior Member
 
Join Date: May 2023
Posts: 7
Yes it does, but a small amount also leaks behind the flange. I can see it clearly as it is still hanging (not fixed to the RV yet). If the pressure is released from the tap end, no leak.
xben is offline   Reply With Quote
Old 05-23-2023, 06:03 AM   #4
Senior Member
 
Join Date: Nov 2018
Location: Beaver Dam, Wisconsin
Posts: 4,590
RV city water connector should not leak before or when disconnected. Vacuum break connector may.

Post a picture for better advice.
__________________
Paul Bristol
Kodiak Cub 176RD
Nissan Pathfinder 2015
Persistent is offline   Reply With Quote
Old 05-23-2023, 10:35 AM   #5
Junior Member
 
Join Date: May 2023
Posts: 7
See the attached image.. It is a bit dark but we can see a lot of water dripping at the bottom of the flange. After a deeper analysis, it seems the water is passing through the flange by the swivel connector, even if there is an o-ring. It is probably not tight enough but I can't figure out how to make it more tight.
Attached Thumbnails
Click image for larger version

Name:	20230523_122642.jpg
Views:	20
Size:	182.0 KB
ID:	393594  
xben is offline   Reply With Quote
Old 05-23-2023, 11:34 AM   #6
Senior Member
 
Old-Biscuit's Avatar
 
Join Date: Nov 2015
Posts: 25,539
That is a lot of weight hanging on the hose side connection

If you can not get it tight enough now (not installed) you will never get it tight enough when you attach it to side of RV

I have a 90* brass elbow with shutoff valve connected to my city water inlet
It STAYS in place....so I tightened it using pliers
When using hose I connect it to the end
__________________
I took my Medication today. HAVE YOU?
Dodge 3500 w/Tractor Motor
US NAVY---USS Decatur DDG-31
Old-Biscuit is online now   Reply With Quote
Old 05-23-2023, 11:56 AM   #7
Junior Member
 
Join Date: May 2023
Posts: 7
It only leaks when I disconnect the hose from the inlet. I disassembled it and without the flange, I clearly see the water goes between the check valve and the swivel nut. There is no washer there, so I suspect that when disconnecting the hose, the accumulated pressure wants to escape where it can, and this is one of the available spots.
Attached Thumbnails
Click image for larger version

Name:	20230523_134907.jpg
Views:	16
Size:	106.3 KB
ID:	393602   Click image for larger version

Name:	20230523_134326.jpg
Views:	21
Size:	196.6 KB
ID:	393603  

xben is offline   Reply With Quote
Old 05-23-2023, 07:54 PM   #8
Senior Member
 
Old-Biscuit's Avatar
 
Join Date: Nov 2015
Posts: 25,539
Buy another one........

Water leaking inside RV possibly between sidewall WILL destroy it
__________________
I took my Medication today. HAVE YOU?
Dodge 3500 w/Tractor Motor
US NAVY---USS Decatur DDG-31
Old-Biscuit is online now   Reply With Quote
Old 05-24-2023, 05:35 AM   #9
Senior Member
 
hohenwald48's Avatar
 
Join Date: Jan 2017
Location: Titusville, FL
Posts: 5,116
You can just replace the whole thing for less than $20.

Sent from my SM-S127DL using iRV2 - RV Forum mobile app
__________________
When seconds count, the police are only minutes away.
2023 Grand Design 2600RB, 2013 Nissan Platinum Armada tow vehicle, Titusville, FL when not on the road
hohenwald48 is offline   Reply With Quote
Old 05-26-2023, 04:52 AM   #10
Senior Member
 
Argosy's Avatar
 
Join Date: May 2004
Location: MI
Posts: 2,066
The check valve is cross threaded into the swivel nut.
Argosy is offline   Reply With Quote
Old 05-27-2023, 06:47 AM   #11
Junior Member
 
Join Date: May 2023
Posts: 7
There is no thread between the check valve and the swivel nut.

Anyway, I replaced both parts by 2 new brass ones... Which also leaked following the same pattern. Replaced them again, leaked again... I did a demonstration to the store with 2 new ones (i.e. 7th & 8th parts) that also leaked. They were speechless. I'm pretty sure this is a design flaw, so you better check yours. Remember they only leaked following a specific sequence.
xben is offline   Reply With Quote
Old 05-27-2023, 10:44 AM   #12
Senior Member
 
Argosy's Avatar
 
Join Date: May 2004
Location: MI
Posts: 2,066
There is thread on the check valve and it is cross threaded. Most likely it also needs a cone washer to seal.
Attached Thumbnails
Click image for larger version

Name:	cross threaded.jpg
Views:	17
Size:	99.7 KB
ID:	393908  
Argosy is offline   Reply With Quote
Old 05-28-2023, 06:59 AM   #13
Junior Member
 
Join Date: May 2023
Posts: 7
This is not where it leaks, go back to top and read carefully
xben is offline   Reply With Quote
Old 05-28-2023, 07:45 AM   #14
Senior Member
 
Join Date: Aug 2019
Location: Eastern outskirts of Dallas, TX
Posts: 3,922
Sounds to me like there is a vacuum breaker in those parts - and vacuum breakers will dump water, either when first pressurized and, when there is a higher pressure on the downstream side than the upstream side (it’s the whole intent of a vacuum breaker! - to prevent water backing up into the potable water source system).

Not an easy solution as the vacuum breaker really needs to be there, or somewhere where water hooks to the coach (some parks might not let you connect, or force you to disconnect if there is no means to prevent contamination of their water system from your coach in the event of a water system failure).

Best solution I can think of is to open a sink faucet IN the coach before turning off the water supply TO the coach - that allows the coach pressure to bleed down as system pressure bleeds off and the vacuum breaker won’t open to dump water.

Or, find pieces/parts to eliminate the vacuum breaker and use a vacuum breaker on the outside of the coach where the hose connects.
__________________
91 Ultrastar Champion02 Georgie Boy Landau 8.1l Workhorse
03 Jeep Wrangler TJ 2018 Jeep Wrangler JK toad
MrMark52 is offline   Reply With Quote
Reply

Tags
leak, leaks, water, water leak



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Grand Junction question, city water flange/riser tube FourCorners Keystone 5 04-21-2020 02:13 AM
Flange bolts rusted/stripped, how can I get the flange to turn? Spyros RV Systems & Appliances 19 03-10-2017 01:31 PM
Winterizing water line behind city water inlet tombucz Travel Trailer Discussion 7 10-06-2016 10:29 AM
City Water fill leaks into fresh water tank ravenbuck Winnebago Industries Owner's Forum 13 11-27-2010 12:46 PM

» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 09:52 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2023, vBulletin Solutions, Inc.