Patent ID: 7025090

Claim:
A fluid flow control valve system having a plurality of control valves, comprising pairs of 3 port, 2 position (3/2) control valves, each said 3/2 control valve being movable between its two positions by a pair of electrically-operable actuators, a logic controller for selectively generating electrical control signals for independently controlling operation of said pairs of 3/2 control valves and, associated with each said 3/2 control valve pair, respective circuit means for receiving said electrical control signals and providing electrical outputs based on said control signals to either of said actuators of each said 3/2 control valve of each pair as pre-selected by variable switch means forming part of said circuit means, whereby varying said switch means programs the fluid output mode of each said 3/2 control valve pair to provide any one of a plurality of different effective valve types.