Patent ID: 7644729

Claim:
A capacity control valve comprising: a lead-in passage through which a discharge chamber discharging a fluid and a control chamber controlling an amount of a discharged fluid are allowed to communicate with each other and through which the discharged fluid is introduced into the control chamber; a first valve chamber formed midway of the lead-in passage; a lead-out passage through which a suction chamber sucking in a fluid and the control chamber are allowed to communicate with each other and through which a fluid is led out from the control chamber; a second valve chamber formed midway of the lead-out passage; a valve body formed integrally with a first valve part that is disposed in the first valve chamber and opens and closes the lead-in passage and a second valve part that is disposed in the second valve chamber and opens and closes the lead-out passage, the first valve part and the second valve part performing an opening and closing operation in mutually opposite directions by reciprocation thereof; and a solenoid that exerts an electro-magnetic driving force on the valve body; wherein the valve body has a pressure receiving part that receives a pressure of the control chamber on an opposite side of the first valve part with the second valve part placed there between; and wherein a pressure receiving area of the pressure receiving part is formed to become substantially equal to a difference between a pressure receiving area of the second valve part in the lead-out passage and a pressure receiving area of the first valve part in the lead-in passage.