Go Back   Keystone RV Forums > Keystone Fleet | Keystone RV Models > Fifth Wheels
Click Here to Login

Reply
 
Thread Tools Display Modes
 
Old 07-21-2018, 05:38 AM   #11
66joej
Senior Member
 
66joej's Avatar
 
Join Date: Feb 2014
Location: radium hot springs bc
Posts: 1,267
Quote:
Originally Posted by firesquirt View Post
It is ok to fill your tank till the water comes out the vents, it is designed for this, the force that is seen by the tank when water sloshes around a half full tank is far greater than when it is full (tank surge). It is actually safer to travel with it full to the vents than it is partially full, ask any over the road tanker driver.

I have seen half full water tanks burst a few times but never on a full tank.
When I was a youngster I drove an 18 wheeler tanker. Carried a product called Alum (mix of sulfuric acid and bauxite) used in paper mill settling ponds IIRC. The tanker had baffles in it to try to eliminate or at least slow down the wave action. This was back in the late 60s so I think pretty well all OTR tankers have those baffles. Would be a good idea for the RV FW tank but then again another $1.50 on the price of a new unit.
__________________

__________________
2013 Cougar 24RKSWE
2015 f150 Screw 5.0 LT tires 2040# payload
Equal-i-zer 10K hitch
66joej is offline   Reply With Quote
Old 07-21-2018, 08:14 AM   #12
fjr vfr
Member
 
Join Date: May 2018
Location: Mechanicsville
Posts: 76
Another + for filling it till it runs out.

The sensor reads full well below the top of the tank, so your probably about 7/8 full when the sensor reads full.
__________________

fjr vfr is offline   Reply With Quote
Old 07-21-2018, 10:44 AM   #13
reddog7571
Member
 
Join Date: Feb 2017
Location: Tipp City
Posts: 47
I've had my 5th we
heel for a little over a year, and I just wait until I see water coming out of the over flow. I have not had any problems doing it this way either.
reddog7571 is offline   Reply With Quote
Old 07-21-2018, 10:58 AM   #14
firesquirt
Junior Member
 
Join Date: Jul 2018
Location: Vancouver
Posts: 3
Quote:
Originally Posted by 66joej View Post
When I was a youngster I drove an 18 wheeler tanker. Carried a product called Alum (mix of sulfuric acid and bauxite) used in paper mill settling ponds IIRC. The tanker had baffles in it to try to eliminate or at least slow down the wave action. This was back in the late 60s so I think pretty well all OTR tankers have those baffles. Would be a good idea for the RV FW tank but then again another $1.50 on the price of a new unit.


Yep you are right for tankers and baffles, except food grade cannot have baffles ( potable water exception).
firesquirt is offline   Reply With Quote
Old 07-21-2018, 03:07 PM   #15
roadglide
Senior Member
 
Join Date: Apr 2015
Location: nm
Posts: 691
I knew a guy that left the water on low filling his fresh tank and walked away he forgot the water being on . The pressure blew his tank out on 2009 raptor . I have a tank hose fill and tank cap fill I use the cap fill and never force the hose inside the tank mine will gurgle awhile before water come out the cap fill and small vent .
__________________
2018 1 ton 4x4 c.c standard bed GMC Denali
2015 311 Impact toy hauler
2018 Milwaukee 8 FLRTU roadglide glide ultra
2003 24 ft partycraft pontoon boat 125 Mecury .
2018 800 Z force sport. 1970 JD crawler loader.
roadglide is offline   Reply With Quote
Old 07-23-2018, 05:25 AM   #16
NotyetMHCowner
Senior Member
 
Join Date: Oct 2014
Location: Clinton, Tn
Posts: 193
The vent on my fifth wheel is the same diameter as the other pex piping in the camper so I'm not worried about over pressurizing the tank. The problem I have had with ours (and from what I have read, I'm about the only one) is losing water out of the vent while traveling. It pours out the vent when going around turns. We filled up at home and drove to the Smoky Mountains, about 60 miles. We lost water all along the way, even when we were backing in, my wife said water was coming out. I think it might have been siphoning at that point (it was down hill though). I have pulled the under belly down and took a look at what to do to fix this. The vent comes almost straight out from the tank to the left side of the RV. I think I will add a loop in it with a T at the bottom. Then run the bottom down through the under belly to a valve, so I can drain it in the winter time. Maybe with the loop I will stop losing water.

We don't dry camp often at all, but losing a third of my water is not cool.
__________________
2015 Montana High Country 305RL
Previous campers:
2008 Rockwood Ultra Lite 2603
1998 Coleman Grandview pop-up with slide

Trucks:
2006 Ford F350 CC, SB, DRW, 4x4
1992 Ford F150 SC, SB, 4x4
NotyetMHCowner is offline   Reply With Quote
Old 07-23-2018, 06:23 AM   #17
JRTJH
Site Team
 
JRTJH's Avatar
 
Join Date: Mar 2011
Location: Gaylord
Posts: 12,643
It might be easier to just buy a rubber plug and put it in the vent opening next to the gravity fill. Just remember to take it out when filling the FW tank.
__________________
John



2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS
JRTJH is offline   Reply With Quote
Old 07-23-2018, 06:28 AM   #18
firesquirt
Junior Member
 
Join Date: Jul 2018
Location: Vancouver
Posts: 3
To stop siphoning you need a high point above the tank with a pinhole at the top to break the siphon.
__________________

firesquirt is offline   Reply With Quote
Reply

Tags
fresh water tank, tank, 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
Forum Jump

Powered by vBadvanced CMPS v3.2.3
Disclaimer:

This website is not affiliated with or endorsed by the Keystone RV Company or any of its affiliates in any way. Keystone RV is a registered trademark of the Keystone RV Company.


All times are GMT -8. The time now is 12:36 AM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2018, vBulletin Solutions, Inc.