Jayco RV Owners Forum

Thread Tools Display Modes
Old 09-18-2012, 07:11 PM   #11
Senior Member
dougfir1's Avatar
Join Date: Sep 2012
Location: Selah, Washington
Posts: 130
On the collar of the tank should be the initials TW which stands for tare weight. That is the empty wt of the tank. weigh the tank on your bathroom scales, deduct the TW and divide the balance by 4.2 and that will give you the number of gallons left. Best to do this all outside. Hope this helps.

2011 Jayflight 23FB G2
2003 Chevy 1500 4x4
Wife Peggy and 2 Beagles and a rescue Cocker Spaniel
2007 Yamaha Grizzly 400 ATV and Yamaha 2000 watt Genny
Me/retired insurance claims and DW/retired RN.
"If the women don't find you handsome, they should at least find you handy."-Red Green
dougfir1 is offline   Reply With Quote
Old 09-19-2012, 08:21 AM   #12
Senior Member
Join Date: Aug 2011
Location: Missouri City, The Republic of Texas
Posts: 2,535
The small propane shop where I fill has mechanical guages. There's a probe with a float attached to the valve (you have to replace the existing valve) that rotates a small magnet in the valve assembly. The guage clips to the outside of the valve and the needle is controlled by the magnet position. The owner told me that he hasn't had any complaints with them but the guage tends to fall off and get lost (it's only clipped on) and he sells replacements fairly often.
The common guages work off pressure and as tafiche points out aren't very good. IMHO they will tell you when the tank is empty (or very nearly so) and if the tank is empty I don't need a guage to tell me that.


2013 F-350 CC SB 2WD 6.7PS
2013 Eagle Premier 351 RLTS
-SOLD- 2012 X23B
-SOLD- 2003 Ford Expedition 5.4, Bilstein shocks
RedHorse1 is offline   Reply With Quote
Old 09-22-2012, 11:40 AM   #13
Senior Member
mcfarmall's Avatar
Join Date: Jun 2011
Location: Kalamazoo, West Michigan
Posts: 1,815
Too bad we all aren't driving propane powered forklifts. They have nifty gauges built in to the tanks. I wonder why 20-30lb RV tanks don't have the same thing unless the orientation has something to do with it. Forklift tanks are horizontal when in use.

Maybe Hank Hill could chime in.
2006 23B Hybrid with 10k round bar WDH
2011 F150 4x4 SCREW Ecoboost, Max Tow, Integrated TBC, 3.73 LS axle, Firestone Ride Rite airbags.
mcfarmall is offline   Reply With Quote
Old 10-11-2012, 04:30 AM   #14
Senior Member
Join Date: Apr 2011
Location: Southwest Florida
Posts: 748
All propane cylinders are have their tare weight (TW) stamped on them. TW is the weight of the tank as it was manufactured - no propane. On a 20 pound cylinder it is usually 16 to 19 pounds.

After you weigh your cylinder, subtract the TW. The rest of the weight is propane. And as previously stated in this thread, each gallon weighs about 4.2 gallons.

OnTheGo is offline   Reply With Quote

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 State Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -6. The time now is 03:03 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.