[ Ref. Dave Krall in 20.06.22 MMDigest ]

I have a little more detailed information about the Kranich & Bach
valve at https://www.player-care.com/kranich-bach.html 

Musically,

John A. Tuttle
Player-Care.com
Brick, New Jersey

 [ Dave Krall has written previously about the Kranich & Bach player
 [ piano action.  Here is a link to a Kranich & Bach diagram:
 [ https://www.mmdigest.com/Attachments/20/10/03/201003_110137_Kranich_bach_diagrams_NO_TEXT.jpg 
 [ -- Relief Editor