Solenoid valve for reduced energy consumption

A control valve system comprising:

• a housing having an inlet, a first output, a second output, and a valve chamber;
• a spool slidably disposed in said valve chamber, said spool being positionable in a first position where fluid communication is established between said inlet and said first output, a second position where fluid communication is established between said inlet and said second output, and a third position where fluid communication is generally prevented between said inlet and said first output or said second output, said spool being biased into said first position;
• a solenoid valve assembly coupled in fluid communication with said inlet, said solenoid valve assembly being positionable in an actuated position where fluid communication is established between said inlet to said spool to move said spool from said first position to said second position and a deactuated position;
• and
• a piston positionable in an extended position driving said spool from said first position to said third position once a predetermined fluid pressure is achieved within said first output and a retracted position.

A control valve system comprising:

• a housing having an inlet, a first output, a second output, and a valve chamber;
• a spool slidably disposed in said valve chamber, said spool being positionable in a first position where fluid communication is established between said inlet and said first output, a second position where fluid communication is established between said inlet and said second output, and a third position where fluid communication is generally prevented between said inlet and said first output or said second output, said spool being biased into said first position;
• a solenoid valve assembly coupled in fluid communication with said inlet, said solenoid valve assembly being positionable in an actuated position where fluid communication is established between said inlet to said spool to move said spool from said first position to said second position and a deactuated position;
• a piston moveable in an extended position driving said spool from said first position to said third position once a predetermined fluid pressure is achieved within said first output and in a retracted position;
• and
• a feedback passage extending from said first output to said piston