Track Pumps

Best up grade....The pump seals go before the valve blows off...

http://www.v-sprint.com/pages/track-pack.html

I had some multi-valve piece of shit and swapped it for one from Varno's lot to use with my disc covers. Both are annoying but Varno's works. The pressure gauge is tiny, the thing falls over easily. Silca and the cheapass P-X were better.