You are reading a single comment by @hamrack and its replies.
Click here to read the full conversation.
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
@hamrack
There is indeed a non-return valve in the head of the pump. No idea exactly how to get to it, but it looks like there's something threaded into the inside of the barrel right down by the head. I can't seem to unscrew the head from the barrel so I imagine that's what holds it on. You would need a mega screwdriver to undo it, but I reckon that's where the valve is.