How to reattach valve to tube hose?

I'ld be quite happy with my Leyzyne mini bike pump, if it weren't for the poorly designed tube hose.

For the second time now a valve is broken off (And I'm only using it occasionally). First time I got it replaced in the store, but I'm not sure if I'm still under warranty.

Here you can see what is wrong:

https://www.dropbox.com/s/o5wwgjrjeuknlv...

https://www.dropbox.com/s/8013etbpd8lsaz...

Is there a good and easy way to fix this?