20 oz co2 filling prob?!

Building or modifying BB, Airsoft, and Pellet type of guns. Show off your custom designs, find tips and other discussion. Target practice only!
django
Specialist 4
Specialist 4
Australia
Posts: 413
Joined: Sat Feb 12, 2005 11:33 pm
Location: Australia

Sat Mar 13, 2010 3:04 am

Lately I cant seem to be able to fill my 20 oz co2 bottle with enough liquid co2!?,I tried again today as I have a large Bulk Bottle out the back yard and it wouldnt take more than 200 grams , I use to fill it to 538.6 grams( 19 oz) . Bottle was fully empty and I chilled it before filling, I can only assume the Bulk Bottles low or near empty? ive the bulk bottle years but wouldnt say ive refilled an awfull lot though.

Bottle says it takes 30kg of content, might have to try weigh the bottle, is this what happens when the bulk bottle gets low? I mean its still filling every time but will only fill half way?............

EDIT: Bottle says Tare Weight: 49 KG ,I weighed it and came in at 63kg, so theres 14 kg of co2 left
Last edited by django on Sat Mar 13, 2010 3:12 am, edited 1 time in total.
User avatar
jackssmirkingrevenge
Five Star General
Five Star General
Posts: 26203
Joined: Thu Mar 15, 2007 11:28 pm
Has thanked: 569 times
Been thanked: 345 times

Donating Members

Sat Mar 13, 2010 3:07 am

django wrote:I've had it for years
It could have leaked over time, no seal is 100% perfect...
hectmarr wrote:You have to make many weapons, because this field is long and short life
User avatar
Hubb
First Sergeant 2
First Sergeant 2
Posts: 2390
Joined: Mon May 28, 2007 8:39 am
Location: South Georgia
Contact:

Sat Mar 13, 2010 8:44 am

If the bulk tank is only filling halfway, then you are probably nearly out of CO2.
User avatar
ramses
Staff Sergeant 2
Staff Sergeant 2
United States of America
Posts: 1679
Joined: Thu May 29, 2008 6:50 pm

Sat Mar 13, 2010 7:38 pm

Perhaps the siphon tube isn't long enough. Has it done this in previous fills of the bulk tank?
POLAND_SPUD wrote:even if there was no link I'd know it's a bot because of female name :D
django
Specialist 4
Specialist 4
Australia
Posts: 413
Joined: Sat Feb 12, 2005 11:33 pm
Location: Australia

Sun Mar 14, 2010 4:48 am

ramses wrote:Perhaps the siphon tube isn't long enough. Has it done this in previous fills of the bulk tank?
Well this is still the first fill on that bulk bottle LOL as I dont refill a hell of a lot, by my calculations there should be 13 kg of co2 left, the bottle holds 31kg worth. I would have thought id still be able to get more out!, you may be right though:Syphon tube might not go all the way down to the bottom of the Bulk Bottle?.
User avatar
Hubb
First Sergeant 2
First Sergeant 2
Posts: 2390
Joined: Mon May 28, 2007 8:39 am
Location: South Georgia
Contact:

Sun Mar 14, 2010 8:44 am

Most siphon tubes in a bottle usually go to the bottom then curve bend along the bottom just a bit. If you are getting (liquid) CO2 from the bottle, then the siphon tube is positioned right. But you can't get 3kg of CO2 from a bottle with only 13kg in it. Sounds like it's time for a refill. Mine (which are the smaller 20# tanks) usually run about $15 for a refill.
User avatar
ramses
Staff Sergeant 2
Staff Sergeant 2
United States of America
Posts: 1679
Joined: Thu May 29, 2008 6:50 pm

Mon Mar 15, 2010 4:14 pm

If it comes to it, you could GENTLY heat the bulk tank in a warm-hot water bath. Mostly to give it more thermal inertia.

I would be reluctant to throw away 13KG of CO2. Maybe empty it through a golf ball BBMG first...
POLAND_SPUD wrote:even if there was no link I'd know it's a bot because of female name :D
Post Reply