Re: What is this mystery screw thread?
Posted: Thu Dec 21, 2017 6:47 pm
The picture of the valve adaptor is for pumping up footballs in the days when they had an net bladder
AJS & Matchless Owners Club forum
https://forum.jampot.com/
I guess you refer to way back Les, to when the bladder had a tube/neck like a balloon. For those bladders I recall having a brass fitting that screwed into a bike pump. The end had a knob that fitted quite tightly in the bladder neck. Used to have to bend the neck over and tie it. That fitting with the spout will screw on to an inner tube valve, not on a pump. It also has to screw up tight or air will escape. I am sure that fitting will screw on the bottle of my airbrush the tube push on the other end.leswaller wrote:The picture of the valve adaptor is for pumping up footballs in the days when they had an net bladder