Getzen water keys

Discussion in 'Trumpet Discussion' started by jsongsun, Dec 23, 2011.

  1. tedh1951

    tedh1951 Utimate User

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    Oct 18, 2007
    The Wide Brown Land
    There is another interesting drain valve used in aircraft Pitot / Static air lines which consists of a small spring loaded ball valve. The spring holds the valve open unless there is pressure in the line when it immediatley self seals. Blow down the line - the leak stops. Stop blowing - the valve opens and the system automatically drains. i'm not sure what they are called - but I'll do some research.
     
  2. rowuk

    rowuk Moderator Staff Member

    Age:
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    Jun 18, 2006
    Germany
    Why not just put a rotary valve open on one side there instead of the water key. No leaks, no turbulence, no tension - only a full bore size faucet and some additional mass!
     

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