Flow control valve

A flow control valve comprising:

• a valve casing having a primary chamber that is an inlet section and a secondary chamber that is an outlet section;
• a valve seat provided inside the valve casing;
• a valve body that can be seated on the valve seat;
• a plunger that is continuous with the valve body;
• a drive unit, including at least a motor and a gear, configured to move the plunger along an axial direction of the plunger to switch between a closed state in which the valve body is seated on the valve seat and an open state in which the valve body is withdrawn from the valve seat;
• a pressure-receiving chamber provided between an upper surface of the valve body and the drive unit;
• and
• a conductive pathway, provided to the valve body along the axial direction of the plunger, that causes the secondary chamber and the pressure-receiving chamber to communicate,
• wherein the conductive pathway causes a pressure in the pressure-receiving chamber in which an upper surface of the valve body is present and a pressure in the secondary chamber in which a lower surface of the valve body is present to be approximately equal, and
• wherein the valve body is formed so that an area of the upper surface is slightly bigger than an area of the lower surface, whereby a force is constantly applied to the valve body in a valve opening direction.