Vented Valves

Discussion in 'The Rehearsal Room' started by andyh, Oct 11, 2007.

  1. andyh

    andyh Supporting Member

    I came across the term "vented valves" with regard to cornet/trumpet valve sets today. Can anyone explain how this works?

    Cheers
    Andy
     
  2. brassneck

    brassneck Active Member

    http://www.osmun.com/services/tptserv.htm

    or a little more here
     
  3. andyh

    andyh Supporting Member

    Thanks - very interesting. I can see how it might be possible to vent an existing valve by drilling a small hole in the appropriate place on a valve body(don't try this at home, kids!), but surely that's not how the valve-set makers would do it? Perhaps by slightly overlapping the ports so that the valve "leaks" in the up position?

    I'm pretty sure Bauerfiend (sp?) make vented valves but for the life of me I can't find a website...

    Andy
     
  4. brassneck

    brassneck Active Member

  5. Is there any brass specialist in the uk that vent valves I have not been successful in my searching around.
     
  6. Tom-King

    Tom-King Well-Known Member

    Not that I'm aware of - you could talk to some of the top techs/builders in this country and see whether they've ever done it, and whether they'd be willing to take it on (IMHO, that means starting with Leigh McKinney at Eclipse; Will Spencer; or Andy Taylor at Taylor trumpets).

    I guess the first question really would be why you're looking to have it done.
    Typically with trumpet's, the idea is to remove the "airlock" in the slides that you normally get when the valve is not depressed, allowing the slides to be shunted or returned more smoothly when not in use - that would ofcourse extend to improving the performance of a sticky trigger
     

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