Control valve and cooling system for vehicle including the same

A control valve, comprising:

• a valve housing;
• a first inlet port on the valve housing and through which a coolant is drawn;
• a second inlet port on the valve housing and through which the coolant is drawn;
• a first outlet port on the valve housing and through which the coolant is discharged;
• a second outlet port on the valve housing and through which the coolant is discharged;
• a ball valve rotatably disposed within the valve housing, and configured to either a) fluidically communicate the first inlet port and the first outlet port, and to fluidically communicate the second inlet port and the second outlet port, or b) to fluidically communicate the first inlet port and the second outlet port and fluidically communicate the second inlet port and the first outlet port;
• an adapter coupled to the valve housing, and having a penetration hole through which the rotation shaft of the ball valve penetrates;
• a driving unit housing connected to the adapter;
• a driving unit provided in an interior of the driving unit housing, coupled to the rotation shaft, and configured to provide power to rotate the ball valve;
• at least one drain chamber on an upper surface of the driving unit housing;
• and
• a plurality of drain lines on the upper surface of the driving unit housing and fluidically communicating with the drain chamber, wherein each of the plurality of drain lines has a different length;
• wherein the coolant leaking through the penetration hole of the adapter is temporarily stored in the at least one drain chamber of the driving unit housing, and is discharged to an exterior of the driving unit housing through the at least one drain line when the a leaked amount of the coolant exceeds a capacity of the drain chamber.