Documentazione Tecnica Norgren J m 140 Fail Safe Proportional Current to Pressure Closed Loop Converter m 422 Fail Freeze Proportional Valves m VP10 m VP12 Miniature Proportional Pressure Control Valves m VP23 3 way Proportional Pressure Control Valves m VP50 3 way Proportional Pressure Control Valves m VP50S 3 way Proportional Pressure Control Valves m VP51 3 way Proportional Pressure Control Valves m VP60