Dual coil low profile solenoid valve with electronic indication

1. A solenoid valve, comprising:

a first coil;

a second coil coupled to the first coil;

a banjo fitting coupled to the second coil;

a spool housing coupled to the banjo fitting so that the first coil and the second coil are selectively rotatable about the spool housing;

a spool received within the spool housing;

an armature received within the first coil and the second coil and including a spool actuator coupled to the spool; and

an indicator assembly including a switching element directly contacted by the spool.

2. The solenoid valve of claim 1 , wherein the switching element is a three position switching element.

3. The solenoid valve of claim 1 , wherein the indicator assembly includes a visual position indicator.

4. The solenoid valve of claim 3 , wherein the visual position indicator includes lights.

5. The solenoid valve of claim 1 , wherein the spool actuator includes two arms that extend from the armature.

6. The solenoid valve of claim 1 , wherein the spool actuator includes a cam, and wherein the spool includes a cam follower that engages the cam to move the spool.

7. The solenoid valve of claim 1 , further comprising a centering spring that biases the armature toward a neutral position.

8. The solenoid valve of claim 1 , further comprising a centering spring that biases the spool toward a neutral position.

9. The solenoid valve of claim 1 , wherein the first coil and the second coil are positioned in a single solenoid housing.

10. The solenoid valve of claim 1 , further comprising a first armature centering spring that biases the armature toward an extended position; and

a second armature centering spring that biases the armature toward a retracted position.

11. The solenoid valve of claim 1 , further comprising a first spool centering spring that biases the spool toward a first position; and

a second spool centering spring that biases the spool toward a second position.

12. The solenoid valve of claim 1 , wherein the spool is removable from the spool housing without removal of the first coil and the second coil.

13. The solenoid valve of claim 1 ,

wherein the spool actuator includes a first arm and a first cam, and a second arm and a second cam, and

wherein the spool defines a first actuator recess and a first cam follower, and a second actuator recess and a second cam follower.

14. The solenoid valve of claim 13 , wherein the spool is captured between the first arm and the second arm.

15. A solenoid valve comprising:

a first coil;

a second coil coupled to the first coil;

a banjo fitting coupled to the second coil;

a spool housing coupled to the banjo fitting so that the first coil and the second coil are selectively rotatable about the spool housing;

a spool received within the spool housing; and

an armature received within the first coil and the second coil and including a spool actuator coupled to the spool,

wherein the spool actuator includes a first arm and a first cam, and a second arm and a second cam, and

wherein the spool defines a first actuator recess and a first cam follower, and a second actuator recess and a second cam follower.

16. The solenoid valve of claim 15 , wherein the spool is captured between the first arm and the second arm.

17. A solenoid valve system comprising:

a solenoid valve including

a first coil and a second coil positioned within a single solenoid housing,

an armature received within the first coil and the second coil and defining an armature axis,

a spool housing coupled to solenoid housing and defining a spool axis that is perpendicular to the armature axis, wherein the solenoid housing is rotatable about the spool axis relative to the spool housing,

a spool received within the spool housing and including an indicator end, and

a spool actuator coupled between the armature and the spool; and

an indicator assembly including

an indicator housing coupled to the spool housing,

a switching element directly contacted by the spool, and

a visual position indicator responsive to the switching element.

18. The solenoid valve system of claim 17 , wherein the spool actuator includes a first arm extending from the armature and a first cam, and a second arm extending from the armature and a second cam, and

wherein the spool defines a first actuator recess and a first cam follower, and a second actuator recess and a second cam follower.

19. A method comprising:

energizing a first coil and compelling an armature to extend along an armature axis;

energizing a second coil collocated with the first coil and compelling the armature to retract;

actuating a spool to a first position along a spool axis that is perpendicular to the armature axis with a spool actuator coupled to the armature when the first coil is energized;

actuating the spool to a second position along the spool axis with the spool actuator when the second coil is energized;

rotating the first coil and the second coil about the spool axis relative to a spool housing;

contacting a switching element with the spool; and

visually indicating a spool position responsive to the switching element.

20. The method of claim 19 , wherein actuating the spool to the first position includes moving a first cam follower of the spool with a first cam of the spool actuator, and

wherein actuating the spool to the second position includes moving a second cam follower of the spool with a second cam of the spool actuator.