derrick
The Glue that binds us together.
- Location
- On the edge of London
I never use a screw on pump.

I never use a screw on pump.
I haven't in the past and never had the problem but the press on pumps I have had have seemed a bit erratic getting on/off so I thought I'd try a excellently reviewed Leyzne with screw on, big mistake, I think I'm going to go back to a press on pumpI never use a screw on pump.![]()
I think you can screw it back in, as long as you haven't dropped and lost any of it. The trouble is, you then have to pump it back up and might unscrew the core taking such a pump offIf it happens, can I just screw the core back in or is it broken?
You can screw it back in but if you've not got a valve spanner (or whatever its called) it'll just come lose again !I rarely needs to use my Lezyne screw-on pump, but have not had any problem with presta valves unscrewing.
If it happens, can I just screw the core back in or is it broken?