050VFG101M--91--ZC1 GS3 control valve with piston actuator 80mm, DN50, PN10-40, NC body 1.4571, disc pair STN2 KVS 45 (100%), characteristic linear, differential pressure max. 8 bar incl. digital positioner 8049 (4-wire), 4-20mA fittings and control line made of plastic