Reply
 
Thread Tools Display Modes
Old 05-11-2015, 09:25 PM   #1
Senior Member
 
Join Date: Jan 2015
Location: IN
Posts: 190
Pressure in water lines when pump is off

Ok, our toilet was leaking only when we flushed it so my husband replaced the vacuum breaker. Now it works great. One thing that surprised him was that when he removed the water lines to take the toilet out, water was spraying everywhere like the lines were pressurized even though the water pump was not on. Why would it do this?
__________________

__________________
2011 MicroLite 23LB
2012 Ram 1500 Crew Cab
zinger60 is offline   Reply With Quote
Old 05-11-2015, 09:30 PM   #2
Senior Member
 
bubbles's Avatar
 
Join Date: Dec 2012
Posts: 2,555
If you didn't open a cold water faucet or flush the toilet to relieve the pressure in the lines you see the results. All the water lines once pressurized will retain that pressure until opening a faucet, opening low point drain or such. Just like at home.
__________________

__________________
bubbles is offline   Reply With Quote
Old 05-11-2015, 09:31 PM   #3
Mod free 5er
 
Join Date: Mar 2008
Location: Concord, NC
Posts: 24,211
Just residual pressure. He should have released the pressure on the line by flushing it or turning on both faucets in the lavatory.
__________________
OldCoot is offline   Reply With Quote
Old 05-11-2015, 09:35 PM   #4
Senior Member
 
Join Date: Jan 2015
Location: IN
Posts: 190
Thanks! This is our first TT so everything is new to us. We have not camped in it yet but getting it ready to camp for the first time the end of the month. We bought it in January so we were not able to test out the plumbing system until recently and found out the toilet leaked. We are glad it was an easy fix.
__________________
2011 MicroLite 23LB
2012 Ram 1500 Crew Cab
zinger60 is offline   Reply With Quote
Old 05-11-2015, 09:35 PM   #5
Site Team
 
Flybob's Avatar
 
Join Date: Oct 2014
Posts: 5,542
That's why you are supposed to relieve pressure on system before removing WH drain plug or anode rod. If you don't it will be the plug and water that will shoot out.
__________________

2015 Freedom Express 248RBS
TV 2015 Silverado HD2500 Duramax
TST Tire Monitors
Honda 2000I + Companion
2 100W solar panels
Flybob is online now   Reply With Quote
Old 05-12-2015, 02:10 PM   #6
Senior Member
 
BooBoo23's Avatar
 
Join Date: Apr 2014
Location: West Atlanta Metro
Posts: 1,108
Quote:
Originally Posted by Flybob View Post
That's why you are supposed to relieve pressure on system before removing WH drain plug or anode rod. If you don't it will be the plug and water that will shoot out.
One of the first things I learned about RV's and won't forget it. Fortunately the water was not hot.
__________________
2014 Palomino Puma 25RS
2011 F-150 Super Crew XLT
Days camped in 2014 - 23 Camped 2015-47
Camped 2016-71, 2017-33, 2018-29 booked
BooBoo23 is online now   Reply With Quote
Old 05-12-2015, 02:27 PM   #7
Moderator Emeritus
 
ColoradoRick's Avatar
 
Join Date: Oct 2014
Posts: 953
lol...yep residual pressure....getting soaked from opening the water tank drain plug was my first lesson!
__________________
Rick & Karen
(Retired USAF, MSgt)
Monument, Colorado
6-year Travel Trailer RVers
2013 Forest River Rockwood Ultra-Lite 2904SS
2014 Toyota Tundra Maxcrew SR-5 TRD 4x4 (with Firestone airbags in the rear)
ColoradoRick is offline   Reply With Quote
Old 05-12-2015, 02:32 PM   #8
Senior Member
 
Join Date: Feb 2015
Posts: 594
X2
__________________
2016 Flagstaff 23lb
Toddupton is offline   Reply With Quote
Old 05-12-2015, 07:31 PM   #9
Senior Member
 
Join Date: Apr 2012
Location: South Carolina
Posts: 1,254
The plastic (PEX) water tubing is flexible. It expands a little under pressure, so it holds pressure.

Also, if the water in the water heater is cold and if no faucet is opened or if the toilet is not flushed as it heats up, as the water expands it will build pressure in the system. Since the cold and hot lines are all connected, it pressurizes everything. That's why the water heater relief valve sometimes drips.
__________________

__________________
RamblerGuy
2011 Sunseeker 3100
1997 Pathfinder Toad
RamblerGuy is offline   Reply With Quote
Reply

Tags
pressure, pump, water

Thread Tools
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



» Virginia Campgrounds

Reviews provided by




ForestRiverForums.com is not in any way associated with Forest River, Inc. or its associated RV manufacturing divisions.


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 10:16 AM.