Reply
 
Thread Tools Search this Thread Display Modes
 
Old 10-13-2009, 09:06 AM   #1
2 Rivet Member
 
1972 27' Overlander
Painesville Twp , Ohio
Join Date: Jul 2009
Posts: 20
Images: 1
How to empty cylinders

Hello, I have Aluminum 30# LP cylinders with old valves. I want to empty them so I can replace with new valves.

What is a good/safe way to empty the cylinders without using turning on the gas in my Airstream? Someone mentioned hooking it up to my bar-b-q, although the fittings don't match.

I estimate they are around 80% - 90% empty.

Thanks,
Nick
__________________

__________________
hagnik is offline   Reply With Quote
Old 10-13-2009, 09:11 AM   #2
4 Rivet Member
 
kennethowens's Avatar
 
1975 Argosy 24
Malakoff , Texas
Join Date: Apr 2009
Posts: 490
Hook up a hose on it in some temp fashion and open the valve
__________________

__________________
kennethowens is offline   Reply With Quote
Old 10-13-2009, 09:12 AM   #3
Rivet Master
 
RickDavis's Avatar

 
1961 24' Tradewind
1969 29' Ambassador
1970 21' Globetrotter
Jamestown , Tennessee
Join Date: Jul 2008
Posts: 1,781
While I would just release it into the air, I live in the country. Some environmentalist will get me for saying that.
It's a good bet the place changing the valves will have a way to pump them out and save the gas
__________________
Rick Davis 1602 K8DOC
61 tradewind, plus a few others
13 Ram 2500 TD
99 Dodge TD 577K miles

RickDavis is offline   Reply With Quote
Old 10-13-2009, 09:36 AM   #4
Rivet Master
 
wkerfoot's Avatar
 
1979 23' Safari
1954 29' Liner
Orange , California
Join Date: Feb 2005
Posts: 3,667
Why not just use one tank until it is empty? Switch over to the other tank and then have the valve on the empty tank replaced and the tank refilled. Then repeat for the other tank.

Bill
__________________
Bill Kerfoot, WBCCI/VAC/CAC/El Camino Real Unit #5223
Just my personal opinion
1973 Dodge W200 PowerWagon, 1977 Lincoln Continental, 2014 Dodge Durango
1979 23' Safari, and 1954 29' Double Door Liner Orange, CA

http://billbethsblog.blogspot.com/
wkerfoot is offline   Reply With Quote
Old 10-13-2009, 09:44 AM   #5
Site Team
 
azflycaster's Avatar
 
1975 25' Tradewind
Dewey , Arizona
Join Date: Mar 2005
Posts: 12,127
Images: 62
Blog Entries: 1
I'm with Bill on this one. What's the rush, you have 2 tanks.
__________________

Richard

Wally Byam Airstream Club 7513
azflycaster is offline   Reply With Quote
Old 10-13-2009, 09:47 AM   #6
2 Rivet Member
 
1972 27' Overlander
Painesville Twp , Ohio
Join Date: Jul 2009
Posts: 20
Images: 1
I just got the camper a few months ago and haven't used the LP yet. It's a 1973 with all original hoses. I thought I would replace the outside ones, and the diverter before I turned on the gas - just to be safe.

Thoughts? I guess the worst case is that is leaks into the air anyway.
__________________
hagnik is offline   Reply With Quote
Old 10-13-2009, 09:56 AM   #7
Site Team
 
Aage's Avatar
 
1974 31' Sovereign
Ottawa , ON
Join Date: May 2008
Posts: 11,204
Images: 25
Federal law here that you need to have it done by a professional registered shop (I wonder why ) every ten years, and they stamp the date it was done into the tank.

I figure that's a good idea. It doesn't cost much...
__________________
“Courage is being scared to death, but saddling up anyway.”
...John Wayne...........................
Aage is offline   Reply With Quote
Old 10-13-2009, 10:04 AM   #8
Rivet Master
 
RickDavis's Avatar

 
1961 24' Tradewind
1969 29' Ambassador
1970 21' Globetrotter
Jamestown , Tennessee
Join Date: Jul 2008
Posts: 1,781
Since I can't find an edit button, would like to ad to my previous post (3) that if releasing into the air do it on a day when there is some air moving.
When your valves are installed the dealer should also stamp the cylinder with a date followed by the letter E. This is a visual recertification good for 5 years.. It is also possible to have the cylinders Hydro tested.. They are then given a stamp good for 12 years, same as new. The problem is finding a place that can do it and then finding a refiller that knows the certification is good for more than 5 years
__________________
Rick Davis 1602 K8DOC
61 tradewind, plus a few others
13 Ram 2500 TD
99 Dodge TD 577K miles

RickDavis is offline   Reply With Quote
Old 10-13-2009, 10:05 AM   #9
Rivet Master
 
wkerfoot's Avatar
 
1979 23' Safari
1954 29' Liner
Orange , California
Join Date: Feb 2005
Posts: 3,667
Quote:
Originally Posted by hagnik View Post
I just got the camper a few months ago and haven't used the LP yet. It's a 1973 with all original hoses. I thought I would replace the outside ones, and the diverter before I turned on the gas - just to be safe.

Thoughts? I guess the worst case is that is leaks into the air anyway.
You can still do that work with the tanks containing gas. Just turn the valve off and replace the hoses and regulator, reconnect and turn on the tanks. Replacing the old hoses and regulator is a good idea.

Bill
__________________
Bill Kerfoot, WBCCI/VAC/CAC/El Camino Real Unit #5223
Just my personal opinion
1973 Dodge W200 PowerWagon, 1977 Lincoln Continental, 2014 Dodge Durango
1979 23' Safari, and 1954 29' Double Door Liner Orange, CA

http://billbethsblog.blogspot.com/
wkerfoot is offline   Reply With Quote
Old 10-13-2009, 10:27 AM   #10
Rivet Master
 
Mikethefixit's Avatar
 
1977 27' Overlander
Trotwood , Ohio
Join Date: Jul 2007
Posts: 2,153
Send a message via Yahoo to Mikethefixit
I would not do this yourself. Why waste the LP. Take it to your LP supplier and they will pump them off for you . You cannot by law do this yourself.It has to be done by a licensed professional and the tanks re certified.
__________________
Roger & MaryLou
___________________
F350 CREWCAB SW LONG BED
7.3 liter Power Stroke Diesel
1977 27ft OVERLANDER
KA8LMQ
AIR # 22336 TAC- OH-7
May your roads be straight and smooth and may you always have a tailwind!
Mikethefixit is offline   Reply With Quote
Old 10-13-2009, 10:30 AM   #11
2 Rivet Member
 
1972 27' Overlander
Painesville Twp , Ohio
Join Date: Jul 2009
Posts: 20
Images: 1
I found a place to re-fill my tanks. They also sell the new valves. They said they would replace them $$, or I could myself. Then they would inspect them (visually) and stamp them $.

I just thought I would save a few bucks and sway the valves myself. Looks like a simple task with a wrench, and maybe some tape.
__________________
hagnik is offline   Reply With Quote
Old 10-13-2009, 10:36 AM   #12
Moderator
Commercial Member
 
eubank's Avatar
 
1967 30' Sovereign
Bosque Farms , New Mexico
Join Date: Jan 2004
Posts: 6,427
Actually, it's not as simple as it looks to replace valves. Yes, it's just a wrench, but trying to keep the cylinder stationary while turning the valve is kind of challenging without scratching or otherwise damaging the cylinder.

Lynn
__________________
WBCCI 21043
eubank is offline   Reply With Quote
Old 10-13-2009, 10:37 AM   #13
INSANITY CENTRAL
 
doorgunner's Avatar
 
1986 32' Excella
2014 Interstate Ext. Coach
Citrus Heights , California
Join Date: Aug 2006
Posts: 2,105
Images: 35
weigh it

Quote:
Originally Posted by hagnik View Post

I estimate they are around 80% - 90% empty.

Thanks,
Nick
Nick , Nick, bo bick bannana fanna fo fick, fe fi fo mick

NICK;

LPG weighs about 4.23 lbs/gallon.
you would be surprised how much may be left in your tanks, especially if the tanks are aluminum. look for the TW stamp on your tank that's the empty weight of the cylinder and do some basic math.
DG

yup holding the cylinders is a hassle, just have the shop do it
__________________


www.popasmoke.com




Proud Appellation American





Vine View Heights is now closed.

YETI ( 65 Quart )

IGLOO (Ice Cube, 50 Quart )
doorgunner is offline   Reply With Quote
Old 10-13-2009, 10:41 AM   #14
3 Rivet Member
 
1963 24' Tradewind
Cape Coral , Florida
Join Date: Dec 2008
Posts: 200
I just had new valves installed on a pair of 30# tanks. They also recertified them. Total cost was $80.00, so they got about $30.00 of that for the labor and the recertification. Pretty reasonable for a pair of good aluminum tanks.

Its not so easy to remove the old valve. You need a way to hold on to the tank firmly enough to stay put with a breaker bar on the wrench.
__________________

__________________
dieseleagle 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
Which AS for almost empty nesters? tksbaskets Our Community 54 07-16-2010 09:49 AM
my gas tanks are empty! tfetterer LP Gas, Piping, Tanks & Regulators 32 11-05-2007 11:16 PM
Aluminum LP gas cylinders reventlow LP Gas, Piping, Tanks & Regulators 3 03-15-2005 12:44 AM
propane cylinders need cleaning femuse LP Gas, Piping, Tanks & Regulators 10 08-01-2004 07:44 PM
Finish on propane cylinders? femuse LP Gas, Piping, Tanks & Regulators 2 04-06-2003 03:02 PM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 01:47 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.