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Proportional flow control valve                                                                                              Proportional flow control valve
                                                                               Proportional flow control valve


       SYMBOL                                                                                                                      PERFORMANCE SPECIFICATIONS
       Simplified              Detailed QN…                Detailed QO…                                                            Oil viscosity u = 30 mm /s
                                                                                                                                                    2
            2                                2                            2                                                         Q = f (I)  Volume flow signal characteristics QN     Q = f (I)  Volume flow signal characteristics QO

                                                                                                                                        Q [l/min]                                          Q [l/min]
                                                                                                                                     100  K0978                                           80  K4164
                                                                                                                                                                            Q  = 80 l/min
                                                                                                                                                                             N
            1                                                                                                                         80                                    Q  = 63 l/min  70
                                                                                                                                      60                                     N            60
                                                                                                                                                                                          50
                                                                                                                                                                                          40                 Q N  = 63 l/min
                                                                                                                                      40                                    Q N  = 32 l/min  30
                                                                                                                                      20                                                  20
                                                                                                                                                                                          10      Q N  = 32 l/min
                                                                                                                                       0                                                   0
                                                                                                                                         0   10  20  30  40 50 60 70 80 90  100 I  [%]      0  10  20  30  40  50  60  70  80  90  100  I [%]

                                             1                            1
                                                                                                                                    Q = f (p)  Volume flow pressure characteristics QN + QO  Q  = f (p)  Leakage volume flow characteristics QN + QO
                                                                                                                                              I = I G                                     L  Q [cm /min]
                                                                                                                                                                                                 3
                                                                                                                                        Q [l/min]                                         400  K0980
       GENERAL SPECIFICATIONS                              HYDRAULIC SPECIFICATIONS                                                  100  K0979                                           300
       Designation        Proportional 2-way flow control valve  Working pressure  p  = 350 bar                                       80                                    Q = 80 l/min
                                                                                                                                                                             N
                                                                                max                                                                                                       200
       Construction       Direct operated                   Maximum volume flow  Q  = 80 l/min                                        60                                    Q  = 63 l/min
                                                                                                                                                                             N
                                                                                max
       Mounting           Screw-in cartridge construction   Volume flow direction  1 → 2                                              40                                                  100
                                                                                                                                                                            Q N  = 32 l/min
       Nominal size       M33 x 2 according to ISO 7789     Leakage oil        See characteristics                                    20                                                    0
       Actuation          Proportional solenoid             Nominal volume flow   Q  = 32 l/min, 63 l/min, 80 l/min (QN)               0                                                      0   50  100  150  200  250  300  350 p [bar]
                                                                                N
       Ambient temperature  -25…+70 °C                      range              Q  = 32 l/min, 63 l/min (QO)                              0   50   100  150  200  250  300  350 p [bar]
                                                                                N
       Weight             0,95 kg                           Hysteresis         ≤ 6 % (QN); 10 % (QO)
       MTTFd              150 years                                            at optimal dither signal
                                                            Repeatability      ≤ 2 % at optimal dither signal
                                                            Fluid              Mineral oil, other fluid on request                 ACCESSORIES                                          SURFACE TREATMENT
                                                            Viscosity range    12 mm /s…320 mm /s                                   Flange body / sandwich plate  Data sheet 2.6-680     ◆  The cartridge body is gas-nitro-carburised
                                                                                            2
                                                                                   2
                                                                                                                                                                                           The armature tube and the slip-on coil are zinc- / nickel-coated
       MANUAL OVERRIDE                                      Temperature range   -25…+70 °C (NBR)                                    Threaded body                Data sheet 2.9-205      ◆
                                                            fluid
                                                                               -20…+70 °C (FKM)
       HB4,5                                                                                                                        Proportional amplifier       Register 1.13
       Optionally: Screw plug (HB0), no actuation possible  Contamination      Class 18 / 16 / 13                                   Mating connector black (B)   Article no. 219.2002
                                                            efficiency                                                                                                                  SEALING MATERIAL

                                                            Filtration         Required filtration grade ß 6…10 ≥ 75,               Technical explanations       Data sheet 1.0-100     NBR or FKM (Viton) as standard, choice in the type code
                                                                               see data sheet 1.0-50                                Filtration                   Data sheet 1.0-50
                                                                                                                                    Relative duty factor         Data sheet 1.1-430


       ACTUATION                                           ELECTRICAL SPECIFICATIONS
                                                                                                                                   INSTALLATION NOTES                                   STANDARDS
       Actuation          Proportional solenoid, wet pin push   Protection class  Connection execution D: IP65
                          type, pressure tight                                 Connection execution J: IP66                         Mounting type      Screw-in cartridge M33 x 2        Cartridge cavity    ISO 7789
       Execution          W.S45 / 23 x 50 (Data sheet 1.1-180)                 Connection execution G: IP67 and IP69K               Mounting position  Any, preferably horizontal        Solenoids           DIN VDE 0580
                          M.S45 / 23 x 50 (Data sheet 1.1-181)  Relative duty factor  100 % DF                                      Tightening torque  M  = 80 Nm Screw-in cartridge     Connection execution D  EN 175301 – 803
                                                                                                                                                        D
       Connection         Connector socket EN 175301 – 803  Standard nominal   12 VDC, 24 VDC                                                          M  = 5 Nm knurled nut             Protection class    EN 60 529
                                                                                                                                                        D
                          Connector socket AMP Junior-Timer  voltage                                                                                                                     Contamination efficiency  ISO 4406
                          Connector Deutsch DT04 – 2P       Limiting current at  I  = 1560 mA (U  = 12VDC)
                                                                                          N
                                                                               G
                                                            50 °C              I  = 780 mA (U  = 24VDC)
                                                                               G
                                                                                         N
                                                           Note!    Other electrical specifications see data sheet 1.1-180
                                                                    (slip-on coil W) and 1.1-181 (slip-on coil M)







                         www.wandfluh.com  Illustrations are not binding  Data subject to change  2/4  Edition: 20 41  2.6-651 E                      www.wandfluh.com  Illustrations are not binding  Data subject to change  3/4  Edition: 20 41  2.6-651 E
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