Reply
 
Thread Tools Search this Thread Display Modes
 
Old 10-07-2014, 01:50 PM   #15
Full time Airstreamer
 
SCOTTinNJ's Avatar
 
2014 30' FB FC Bunk
Anywhere , USA Living.Somewhere.Yonder
Join Date: Jan 2014
Posts: 1,161
I guess that makes sense.
__________________

__________________
SCOTTinNJ is offline   Reply With Quote
Old 10-07-2014, 01:56 PM   #16
Rivet Master
 
PharmGeek's Avatar

 
2014 30' FB FC Bunk
Hoover , Alabama
Join Date: Dec 2012
Posts: 3,377
oh crap...I had not thought about the black tank sprayer or the city water check valve both requiring compressed air....

I thought with my antifreeze through water pump to all places + p traps + a bit in black tank + a bit in grey tank I was in the clear....

I think that black hose that came with the trailer may be a little stupid 4-5 foot extension for the propane access port on the trailer? I could be wrong though....
__________________

__________________
“The atoms of our bodies are traceable to stars that manufactured them...We are not figuratively, but literally stardust.”


PharmGeek is offline   Reply With Quote
Old 10-07-2014, 02:03 PM   #17
Rivet Master
 
TinTin's Avatar
 
2009 23' FB Flying Cloud
Canmore , Alberta
Join Date: Nov 2013
Posts: 1,762
Images: 6
Few (none?) of the RV winterization lists I've seen have included blowing out the black tank flush line. I wonder why it would have a check valve, you'd think it would be designed to self-drain ...
__________________
Bob and Nancy
http://www.rwcphoto.smugmug.com
Cheer Up, Slow Down, Chill Out!
TinTin is offline   Reply With Quote
Old 10-07-2014, 02:09 PM   #18
Figment of My Imagination
 
Protagonist's Avatar
 
2012 Interstate Coach
From All Over , More Than Anywhere Else
Join Date: Dec 2011
Posts: 10,316
Quote:
Originally Posted by TinTin View Post
I wonder why it would have a check valve, you'd think it would be designed to self-drain ...
It's actually by RVIA code (and municipal ordinances as well) that you must have some sort of back-flow preventer to keep wastewater from back-feeding into a municipal water source in the event of a loss of water pressure. That back-flow preventer is a check valve on your black tank, an air gap between your sink faucet and the top of a full sink, etc.
__________________
WBCCI #1105
TAC LA-4

My Google-Fu is strong today.
Protagonist is offline   Reply With Quote
Old 10-07-2014, 02:13 PM   #19
Rivet Master
 
PharmGeek's Avatar

 
2014 30' FB FC Bunk
Hoover , Alabama
Join Date: Dec 2012
Posts: 3,377
Protagonist...I guess if there were ever water damage to that valve, the flushers would still work? but backflow prevention wouldnt? would be hard to notice? Mine was not flushed last year and may or may not have seen damage with multiple exposures of temps in the low teens here in Alabama believe it or not.
__________________
“The atoms of our bodies are traceable to stars that manufactured them...We are not figuratively, but literally stardust.”


PharmGeek is offline   Reply With Quote
Old 10-07-2014, 02:13 PM   #20
Rivet Master
 
TinTin's Avatar
 
2009 23' FB Flying Cloud
Canmore , Alberta
Join Date: Nov 2013
Posts: 1,762
Images: 6
Durn. And she's already put away for the winter 60 miles from home!
__________________
Bob and Nancy
http://www.rwcphoto.smugmug.com
Cheer Up, Slow Down, Chill Out!
TinTin is offline   Reply With Quote
Old 10-07-2014, 02:23 PM   #21
Rivet Master
 
knunut's Avatar
 
2007 20' Safari
2016 26' Flying Cloud
Chgo. N.W. Burb's , Illinois
Join Date: Nov 2006
Posts: 564
Has anyone used a 12VDC Harbor Freight comp. If so which model? Have thought of mounting one where 2nd battery mount is. Could use for ties and winterize. Would not need to carry the larger 120v model.
__________________
knunut is offline   Reply With Quote
Old 10-07-2014, 02:29 PM   #22
Figment of My Imagination
 
Protagonist's Avatar
 
2012 Interstate Coach
From All Over , More Than Anywhere Else
Join Date: Dec 2011
Posts: 10,316
Quote:
Originally Posted by PharmGeek View Post
Protagonist...I guess if there were ever water damage to that valve, the flushers would still work? but backflow prevention wouldnt? would be hard to notice? Mine was not flushed last year and may or may not have seen damage with multiple exposures of temps in the low teens here in Alabama believe it or not.
I think you have it right. A failed check valve could allow water to pass in both directions, so the tank flusher would still work even if the check valve froze.
__________________
WBCCI #1105
TAC LA-4

My Google-Fu is strong today.
Protagonist is offline   Reply With Quote
Old 10-07-2014, 02:37 PM   #23
retired USA/USAF

 
2001 30' Excella
Somerset , New Jersey
Join Date: Jan 2009
Posts: 2,157
I hadn't thought about opening the valve during the evacuation of the tank flush. The tank vents to the outside anyhow so there's no pressure build up. So, to answer your question - I do not and don't see the need. I simply try to get a good end of season flush before I bring it home. I store my AS at my son's house and do not have a dump station there. Then winterize when I get a chance.
__________________
Roger in NJ

" Democracy is the worst form of government. Except for all the rest"
Winston Churchill 1948

TAC - NJ 18

polarlyse is offline   Reply With Quote
Old 10-07-2014, 02:44 PM   #24
Rivet Master
 
Wingeezer's Avatar
 
2005 30' Classic
Burlington , Ontario
Join Date: Sep 2008
Posts: 2,709
Quote:
Originally Posted by Protagonist View Post
If you've used the municipal water hookup, I'd still blow the lines, so that you can clear the water from the check valve in the water intake, if nothing else. Pumping antifreeze through the lines doesn't help with that.
This is an interesting point and it certainly sounds worth blowing the lines as well as using plumbing antifreeze to ensure the system is thoroughly protected - I will probably do that in future years!

But having said that, I have only used antifreeze for each of the six years we have owned our trailer, and never even thought about blowing the lines to protect the check valve!

Despite this oversight I have never had any problem with the check valve in Spring time.

It certainly gets cold enough up here north of the border, so that makes me wonder why I have not had a problem.

Maybe I have just been lucky somehow - or maybe the check valve is designed in such a way that there insufficient "dead space" in the valve design to trap water that can then freeze and cause a problem?

Seems it would make good sense to design the check valve that way and it certainly should be possible! I have never examined the valve.

Anyone know?


Brian.
__________________
Brian & Connie Mitchell

2005 Classic 30'
Hensley Arrow / Centramatics
2008 GMC Sierra SLT 2500HD,4x4,Crew Cab, Diesel, Leer cap.
Wingeezer is offline   Reply With Quote
Old 10-07-2014, 02:57 PM   #25
Rivet Master
 
A W Warn's Avatar
 
2000 25' Safari
1999 34' Excella
Davidson County, NC , Highlands County, FL
Join Date: Aug 2006
Posts: 2,571
Quote:
Originally Posted by Protagonist View Post
If you've used the municipal water hookup, I'd still blow the lines, so that you can clear the water from the check valve in the water intake, if nothing else. Pumping antifreeze through the lines doesn't help with that.
What you say makes sense.
My low point drain valve is a couple inches below my water inlet pipe's high point, and about 4-5' away. I can open the valve, where the outlet is 8" lower, and watch the water siphon out. This siphoning action pulls the air through the inlet then the pressure regulator that is inline. In my trailer I can literally see the water/bubbles inside the pipes through the translucent pipe walls, flowing until there is only the air that has been pulled in. I have never blown out this line. One other thing that might have saved my bacon is that my parking spot is graded so that my inlet pipes actually drains toward my low point drain naturally. My trailer sat in 0 degree temperatures with no heat on during winter without issue. My neglected battery did freeze though.

(now that I've jinxed myself by saying this you know my pipes, now full of antifreeze, will freeze and break this winter, maybe I'll go dig out the compressor and give it a blow)
__________________
Alan
2014 Silverado 1500 Crew Cab 5.3L maximum trailering package (yes, I'm towing the 34')
A W Warn is offline   Reply With Quote
Old 10-07-2014, 04:11 PM   #26
Rivet Master
 
HowieE's Avatar
 
1991 34' Excella
Princeton , New Jersey
Join Date: Aug 2003
Posts: 6,813
Images: 12
If you blow out the black tank flush line you darn well better have the dump valve open or you mat be buying a new tank.

having never seen any reason to use the black tank flush line I have never addressed it. That line is for those that never took plumbing 101 and I can't paraphrase the course here without getting in trouble.
__________________
WBCCI 12156 AIR 3144 WACHUNG TAC NJ6
2004 Excursion 4x4
1991 34 ft. Excella +220,000 miles, new laminated flooring, new upholstery, new 3200 lbs axles

HowieE is offline   Reply With Quote
Old 10-07-2014, 04:16 PM   #27
Rivet Master
 
TinTin's Avatar
 
2009 23' FB Flying Cloud
Canmore , Alberta
Join Date: Nov 2013
Posts: 1,762
Images: 6
Quote:
Originally Posted by HowieE View Post
If you blow out the black tank flush line you darn well better have the dump valve open or you mat be buying a new tank.
Not sure why you say this? A few millilitres of water purged from the lines shouldn't hurt anything (most have a little antifreeze already in the tank); nor should 30 psi air.
__________________
Bob and Nancy
http://www.rwcphoto.smugmug.com
Cheer Up, Slow Down, Chill Out!
TinTin is offline   Reply With Quote
Old 10-07-2014, 04:23 PM   #28
Rivet Master
 
HowieE's Avatar
 
1991 34' Excella
Princeton , New Jersey
Join Date: Aug 2003
Posts: 6,813
Images: 12
That is a plastic tank and not designed to be pressurized. If over pressurized by an amateur the tank may fail before the toilet leaves the floor and hit the ceiling.
__________________

__________________
WBCCI 12156 AIR 3144 WACHUNG TAC NJ6
2004 Excursion 4x4
1991 34 ft. Excella +220,000 miles, new laminated flooring, new upholstery, new 3200 lbs axles

HowieE is offline   Reply With Quote
Reply


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
Space Heater for Winterization jjagnew Winterizing, Storage, Carports & Covers 6 09-18-2010 02:38 PM
Southern Illinois 'One Last Rally Before Winterization' TinLoaf WBCCI Rallies & Events 55 11-10-2009 11:56 AM
Compressors and winterization luckydc Winterizing, Storage, Carports & Covers 7 11-28-2004 11:06 AM
What to do for winterization? FarHarley General Interior Topics 1 11-25-2004 06:25 AM
Winterization Blues - Water Heater Question BrianRegan Water Heaters, Filters & Pumps 0 06-13-2004 12:36 PM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 09:41 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.