Valve actuator with external coils
Abstract:
A gas valve having a gas valve body having a valve and a valve seat both housed by the gas valve body. The valve may further include an armature housed by the gas valve body, a pole situated outside of the gas valve body so as to not be exposed to gas in the gas valve body. The pole may be positioned to be in magnetic communication with at least part of the armature through the gas valve body. The valve may further include a coil situated outside the gas valve body. The coil may be wound about the pole such that activation of the coil produces a magnetic flux that is carried to an end of the pole, through the gas valve body, and to the armature, resulting in movement of the armature, and movement of the valve between the open position and the closed position.
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