I only ask, because it sorta seem like thats what you would be doing if you didnt shoot all of the air out of your line before disconnecting it.
I think there is still confusion about what a quick disconnect does. (Or in the US you refer to it differently to us in the UK)
Quick disconnect is only the type of fitting. It does not have a valve to close the air.
When you have the bottle direct to the marker and unscrew it the valve on the bottle closes so the only air lost is that just out of the bottle, and a small amount until the vlave closes.
If you have the bottle on a remote line and removed it from the marker the bottles valve will still be open so the air line will still be pressurised. Air would blow out.
Look at Gers picture above that names the components:
Note the ASA has a male QD male nipple.
The end of the airline has a QD female end.
(These are the same fittings as the bottles male fill nipple and a female QD on the fill line)
On Gers picture the slide check is a valve.
The slide check is a valve that slides open or closed.
A ball valve is a valve that is literally turned to open or close.
To remove a remote line that does not have a valve you have to unscrew the bolt on the top of the bottle connection to turn off the air, then fire the marker to depressurise the air in the line, then you can release the QD. This way you may have to fire multiple shots.
If you attempt to release the QD it will be hard because of the pressure, you may not even be able to open it.
With a slide check or ball valve you can turn off the air at the end of the line allowing you to remove the QD. You should be able to remove it without firing any shots, if it is too tight then you can release the pressure with one shot.
On Palmers this is a QD:
On Palmers this is a ball valve:
An alternate option is the 'Pro connect':
The Pro connect is an alternate connection to the QD, but it incorporates a valve.
I would recommend you go for either of:
1 - a remote line with a QD and either of a slide check or a ball valve.
2 - a remote line with a Pro connect.
This post has been edited by Tommikka: 31 October 2009 - 08:54 AM