| 摘要 |
A vehicle engine coolant system and method of making the same are provided, the system having a valve construction comprising a housing provided with an inlet interconnected to the block of the internal combustion engine of the vehicle and an outlet interconnected to the radiator of the engine and being separated from the inlet by a valve seat, a movable valve member carried by the housing for opening and closing the valve seat, and an electrically operated stepper motor carried by the housing and being operatively interconnected to the valve member for positioning the valve member relative to the valve seat.
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