Correct, i figured that much. The solenoid is engraved, 1, 2 and 3. As previously stated, ports 2 and 3 are, with no elec applied, out of the box, are ported/linked together. I blew in port 1, had no air flow, i took another breath, blew into port 2, and heard air out of port 3. I blew once more...