Patent ID: 8128056
Filing Date: 2012-03-06
Classification: F16K

Abstract:
1. A flow control valve comprising: a valve body including a flow passage; a first poppet being fixed within one side of the valve body, and including an inlet port through which a fluid flows in and an outflow hole through which the fluid flows out; a second poppet being fixed within another side of the valve body, and including an outlet port through which the fluid flows out and an inflow hole through which the fluid flows in from the flow passage of the valve body; a sleeve sliding along an outer circumferential surface of the first poppet by an actuator to close the outflow hole of the first poppet and to regulate an area of the outflow hole; and a spool being disposed between the first poppet and the second poppet to be slidable along the outer circumferential surface of the first poppet and the second poppet, being elastically supported by the second poppet, and sliding due to a pressure of the fluid flowing in the first poppet to close the inflow hole of the second poppet and to regulate an area of the inflow hole.