Patent ID: 9709184
Date: 2017-07-18
CPC Classifications: F16K,G05D,Y10T

Claim:
1. A control valve configured to control a pressure of a fluid, the control valve comprising: a valve seat having a seat portion where the fluid passes; a poppet valve inserted into the valve seat so as to be displaceable with respect to the valve seat to regulate a pressure of the fluid passing through the seat portion; a fluid rectifying unit provided on a downstream side of the valve seat to rectify the fluid having a pressure regulated by the poppet valve; a plug; and a control pressure chamber provided on a downstream side of the fluid rectifying unit, wherein the poppet valve comprises a part of the small-diameter rod portion is inserted into the plug, the plug has an inner circumferential surface on which the larger-diameter rod portion is slidable, the fluid rectifying unit comprises an inner path through which the fluid passes, the inner path includes the poppet valve further comprises a poppet-throttling fluid path defined between the seat portion and the poppet valve body, a minimum cross-sectional area of the communicating path is larger than a maximum cross-sectional area of the poppet-throttling fluid path, and the communicating path is provided between the fluid rectifying unit and the plug.