Presta valve panic - pumping the road bike tire

I rode my road bike for the first time in a week, due to bad weather recently.
Before I rode, I pumped up the tires, but I broke the Presta valve of the rear wheel. I replaced the tube, but the valve was the problem again. It's 34 mm long and a little bit too short for a road bike rim. At last I succeeded to pump up the tire, so it was all right after all, but I will choose a tube with valve length longer than 48 mm from now on. When you ride a road bike you may want to deal with valves of the tire much more carefully, for it's relatively easier to break and you are going to pump up your tires at least once a week, which increase the risk if you don't carefully deal with them.

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