Patent ID: 7549438

Claim:
A valve comprising: a valve body including a valve seat; a valve tappet having a seal end positioned proximate to the valve seat and being operable to be moved to open and close the valve; and a divided solenoid including a first coil and a second coil, said solenoid being energized to move the valve tappet, said divided solenoid including a first terminal coupled to one end of the first coil, a second terminal coupled to one end of the second coil and a third terminal coupled to both of the other ends of the first and second coils where the other ends of the first and second coils are coupled together, said solenoid being operated in a normal mode where a supply voltage is provided to the first and second terminals and the third terminal is open-circuited to energize the solenoid and move the tappet, and in a first heating mode where the supply voltage is applied to the second and third terminals and the first terminal is open-circuited to energize the solenoid and move the tappet and generate more heat than the normal mode that heats the valve seat.