Anatomy of a WurliTzer Theatre Pipe Organ
This assembly is part of the control system for a Tremulant.
It mounts on the front of the trem. The Magnet/Valve Box mounts on the back of this assembly and gets
its air supply through the round hole at the lower/left. The Valve controls the air to the Control Pneumatic
which connects, via a channel running through the top section, through the hole at the top/right.