The J641H-16C Pneumatic Flanged Globe Valve primarily consists of a flanged globe valve integrated with a pneumatic actuator, pneumatic control components, signal switches, and (optional handwheel mechanism). This automatic control device utilizes compressed air to drive the pneumatic actuator, which activates the cylinder. This mechanism connects to the valve stem, valve plug, and valve disc to perform lifting and lowering movements. The valve body (disc) and seat sealing surfaces employ a conical seal design, featuring low closing force, erosion resistance, and reliable sealing. The seat can be a replaceable type, allowing flexible pairing with sealing surface materials of the closing components to meet operational requirements and extend service life.