Fisher™ V250 Control Valve

Tapered-polygon ball-to-shaft connection and clamped splined actuator connection remove lost motion or deadband from the drive train.;Reduced ball port design provides a modified equal percentage flow characteristic and an excellent response characteristic.;Materials are available for applications handling sour service. These materials comply with the requirements of NACE MR0175-2002.;Pressure-balanced drive shaft design with PTFE-lined bearings and pressure-assisted shaft sealing arrangement provides for a long life of reliable service.;Two-piece ball and shaft assembly allows for complete trim overhaul; parts replacement is kept to a minimum.;The optional live-loaded packing system is designed with very smooth shaft surfaces and live loading to provide excellent sealing.;The optional live-loaded packing system is designed with very smooth shaft surfaces and live loading to provide excellent sealing.