A two-tier single valve action. The valves are the same as used on their line of later coin-operated pianos, with the individual unit valve block. However, most foot-pump players used a stack which utilized only the glue-in steel valve plate stamping, the valve and the molded plastic valve seat ring below. The pouches were zephyr skin and the board with the valve wells was glued to the pouch board, making them inaccessible. Illustrated below is the valve and valve seat.