Patent ID: 7066202

Claim:
An indicator-equipped flow regulating valve comprising: a piston provided displaceably in an axial direction by pilot air supplied via a pilot port; a shaft connected to said piston; a valve plug connected to one end of said shaft and closing a fluid passage when seated on a valve seat; a flow regulating section provided separately from said shaft and regulating a valve opening degree of said valve plug; and an indicating section which is displaceable to positions for indicating valve-opened and closed states of said valve plug by said pilot air supplied via a first pilot passage communicating with said pilot port, wherein a check valve is provided at one end of said shaft to give an opened state when pressed by a projection provided at a position facing said shaft, and said check valve is in said opened state when said valve plug is separated from said valve seat in said valve-opened state so that said indicating section is displaced to said position for indicating said valve-opened state of said valve plug by said pilot air supplied via said check valve.