Capacity control valve

A capacity control valve comprising:

• a valve housing provided with a suction fluid supply chamber to which a suction fluid of suction pressure is supplied, and a control fluid supply chamber to which a control fluid of control pressure is supplied;
• a CS valve formed by a CS valve element driven in an axial direction by a solenoid, and a CS valve seat provided in a communication passage between the control fluid supply chamber and the suction fluid supply chamber, the CS valve being connectable to and separable from the CS valve seat;
• and
• a pressure drive portion arranged in the control fluid supply chamber in a sealed manner and biasing the CS valve element in an opposite direction to a driving direction of the solenoid, wherein
• the control fluid is introduced on a first side of the pressure drive portion, and the suction fluid is introduced on a second side of the pressure drive portion, the first side and the second side being opposed to each other through the pressure drive portion in the axial direction,
• the capacity control valve further comprises a return spring that is provided separately from the pressure drive portion and biases the CS valve element in the opposite direction to the driving direction of the solenoid, and
• the CS valve element and the pressure drive portion are out of contact upon a non-driving state of the solenoid.