I used to use PPC's suction boxes.  However, I found a much, much
better product: the Bergytone BT-002 suction box.

They are built much quieter and have a better-constructed box that
allows you to add extra nipples for extra needs.  They claim to deliver
over fifty inches of water vacuum, which can overcome even the leakiest
system.  The internal circuit board has a superior design.

I have one installed in my player and have installed four others in
customers' players.

Duaine Hechler
Florissant, MO
www.hechlerpianoandorgan.com

  [ Eric Bergstrom's Bergytone products are available here:
  [ http://www.pianoproservice.com/bergytone.shtml 
  [ --Relief Editor.