I bought this used bicycle and me being new to bicycles have no idea which pump to use for this valve. When I loosen the rotating part of it, all the air leaks if this information is of any help.
The good news is you may replace the tubes with ones with standard Schrader valves if you wish. I’ve worked with many bikes with Woods/Dunlop ones and find them to be inferior.
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Dunlop valve but someone installed the valve part upside down. Remove the threaded ring, turn the valve part the other way and reinstall the ring.
https://preview.redd.it/3uj67vy8trhf1.jpeg?width=784&format=pjpg&auto=webp&s=46fcdb4f64d0a02dd45ea55a759e1dac498635ca
The valve is upside down its a Dunlop valve
An upside down one
When inflating, do you need to unscrew the bit?
The good news is you may replace the tubes with ones with standard Schrader valves if you wish. I’ve worked with many bikes with Woods/Dunlop ones and find them to be inferior.