Thumper Club Forum

Club House => Chatter => Topic started by: guest27 on June 02, 2008, 10:23:49 AM

Title: Purging butane cylinders
Post by: guest27 on June 02, 2008, 10:23:49 AM
I have a couple of non-standard butane cylinders that I think I will struggle to swap for Calor ones, not to worry I want to use one as a res for a vacuum pump.

Does the valve just thread into thte top?  how do I purge the residual gas - water. carbon monoxiode or just throw a match at it.. he he he

Any ideas on the thread form if it is threaded

Any thoughts on a manual valve for it ?

Thanks

R
Title: Re: Purging butane cylinders
Post by: Richard on June 02, 2008, 10:55:37 AM

I just fill them with water, to the brim, and drain them off.  Then I attak them with angle grinders.
Title: Re: Purging butane cylinders
Post by: guest27 on June 02, 2008, 06:27:22 PM
Perfect - thanks.

R
Title: Re: Purging butane cylinders
Post by: johnr on June 03, 2008, 07:21:50 AM
youd be better purging with nitrogen than using water. theres no way of removing the residual water from the inside of the tank and then vac it out. (steel tank?)
Title: Re: Purging butane cylinders
Post by: guest27 on June 03, 2008, 01:41:11 PM
Yup - steel tanks.

No nitrogen - cept in the atmosphere but I have a source of air with all  the oxygen removed - car exhaust.  Mind if the water proves to be a problem I guess I can put the tank on the bonfire for a bit - having purged it and removed the top....

R
Title: Re: Purging butane cylinders
Post by: guest18 on June 03, 2008, 09:01:16 PM
Drop in some dessicant bags? iirc you find them in new trainers, could maybe blag some free from a shoe shop if you pass one?
edited to add, I mean for getting rid of the water not the gas!!
Title: Re: Purging butane cylinders
Post by: Jez F on June 05, 2008, 07:34:08 AM
As Butane and Propane are both heavier than air, why not remove the valve( make sure it's empty first!!) and stand it upside down, a few inches off the ground outside for a couple of days, should save messing around with water and having to dry it out.
 Jez