rotary valve question

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Posted by Garf on December 22, 2001 at 00:01:58:

My brass quintet is going carolling sunday evening and it's going to be about 30 degrees. Last year I played a piston valved tuba, and it did alright, but the horn player seemed to have some problem with his valves freezing. This year I've got a Miraphone 188. What I'd like to know is how does the could affect rotary valves, and if it freezes them, can it be prevented by wrapping them up?

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