The FY303 is a single-acting (spring return) or double-acting linear control valve positioner for control valves such as globe, gate, diaphragm, etc. and rotary control valves such as ball, butterfly or plug with pneumatic actuators such as diaphragm, piston etc. The FY303 is based on the nozzle-flapper, proven in the field, and on the Hall effect position sensor, without physical contact, which provides high performance and safe operation. The digital technology used in the FY303 allows the choice of several types of characteristic curve, a simple interface between the field and the control room and many interesting features that considerably reduce the cost of installation, operation and maintenance.
