| 摘要 |
Disclosed is a flow control valve capable of preventing the seat portion from being interfered with when the valve body is operated. A PCV valve is equipped with a case, a valve body, and a spring. A measurement portion is formed by a measurement hole of a seat portion formed halfway through a gas path 50 and a measurement surface formed on the valve body. Through axial movement of the valve body, the path sectional area of the measurement portion is adjusted, whereby the flow rate of a fluid is controlled. Formed on the valve body are a plurality of guide ribs protruding radially and having sliding surfaces configured to be brought into sliding contact with the inner peripheral surface of the measurement hole. A maximum diameter surface portion of the measurement surface is formed in an outer diameter. This outer diameter is preferably smaller than the diameter of a circumferential surface. The circumferential surface preferably includes the sliding surfaces of the guide ribs.
|
