I am currently restoring a Standard Coin Piano, manufactured in Oregon,
Illinois.  It is an early under-the-keybed, Berry-Wood style stack,
with a small, high-speed rotary pump, and it appears never to have had
a reserve.

I believe it had a pneumatically operated dump valve, that could be
adjusted, mounted on the side of the pump, which is currently missing.
Does anyone have a similar instrument and can provide photos of the
dump valve assembly?  It seems to be operated off of an atmosphere
inlet from the rewind pneumatic.

Any help would be greatly appreciated, as I am aiming for an authentic
restoration/reconstruction.

Thank you,

Stephen K Goodman - Professional Player Piano & Nickelodeon Restoration
Tarpey Village (Fresno/Clovis) California, USA
http://www.mechanicalmusicrestoration.com/ 
stephengoodman@sbcglobal.net.geentroep [delete ".geentroep" to reply]