Abstract: A pneumatic logic control module is disclosed which includes three miniaturized, piloted, detented relay valves mounted on a pneumatic circuit board including a valve mounting plate, a circuit plate having routed flow paths formed in each face, and a connector plate having barbed ports for receiving flexible tubes. The pneumatic circuit interconnects the relay valves so that the relay valves are shifted from a normal position to an active position and locks to the normal position in a predetermined sequence to produce a series of pneumatic pressure signals. The module produces a first pneumatic pressure signal in response to a start signal which is used to initiate a first event. A return verification signal indicating that the first event has been completed terminates the first pressure signal, and initiates a second pressure signal which starts a second event.