Originally Posted by
guy153
So at what point did we stop using Woods valves and what was wrong with them? Having a threaded hose that screws on seems to be back in style so maybe we should go back to Woods. They seemed to be quite good at not leaking any air out when you were attaching and removing the hose.
I've only ever seen one Dunlop valve (same valve) in many decades of working on bikes. I was struck by the simplicity of the valve. It's very much like a Presta in that it is a check valve. Air goes in and the valve closes when the pressure equilibrates.
On a curious side note, long ago, we used to get a little rubber tube in some Rema Tip Top patch kits. I never knew what it was for until I saw a Dunlop valve.