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Proportional throttle valve                                                                                                  Proportional throttle valve
                                                                                    Proportional throttle valve


       SYMBOL                                              CERTIFICATES                                                            PERFORMANCE SPECIFICATIONS
       „normally closed” DN     „normally open” DO                       Surface   Mining  Standard   M248                         Oil viscosity u = 30 mm /s
                                                                                                                                                    2
                 2                        2                                                  -25 °C   Electronic                    Q = f (I)  Volume flow adjustment characteristics DN  Q = f (I)  Volume flow adjustment characteristics DO
                                                                                             to…                                              ∆p = 20 bar                                          ∆p = 20 bar
                                                            ATEX            x        x        x         x                              Q [l/min]                                            Q [l/min]
                 1                        1                 IECEx           x        x        x         x                             35  K1185                            Q = 25 l/min    35  K1184
                                                                                                                                                                            N
                                                            CCC             x        x        x         x                             30                                                   30          Q = 25 l/min
                                                                                                                                                                                                        N
                                                                                                                                                                                           25
                                                                                                                                      25
                                                            EAC             x        x        x         x                             20                                                   20  Q = 10 l/min
                                                                                                                                                                                               N
                                                                                                                                      15                                     = 10 l/min    15
                                                            Australia       x        x        x                                       10                                   Q N             10
                                                                                                                                                                           Q = 6,3 l/min
                                                            MA                       x        x         x                              5                                    N               5    Q N  = 6,3 l/min
                                                            UL / CSA        x                 x                                        0  0   10  20  30  40 50 60 70 80 90  100 l [%]      0  0   10  20  30  40 50 60 70 80 90  100 l [%]
                                                           The certificates can be found on www.wandfluh.com
       GENERAL SPECIFICATIONS                              ACTUATION                                                                Q = f (p)  Volume flow pressure characteristics DN   Q = f (p)  Volume flow pressure characteristics DO
                                                                                                                                              I = I                                                I = 0 mA
       Designation        Proportional throttle valve       Actuation          Proportional solenoid, wet pin push                               G
       Construction       Direct operated                                      type, pressure tight                                   45 Q [l/min]                                         45 Q [l/min]
                                                                                                                                                                                              K1186
                                                                                                                                         K1187
       Mounting           Screw-in cartridge construction   Execution          MKY45 / 18x60 (data sheet 1.1-183)                     40                                                   40
                                                                                                                                                                            N
       Nominal size       M22 x 1,5 according to ISO 7789                      MKU45 / 18x60 (data sheet 1.1-184)                     35                                   Q = 10 l/min    35                                   Q = 25 l/min
                                                                                                                                      30
                                                                                                                                                                                           30
                                                                                                                                                                           Q = 25 l/min
                                                                                                                                                                            N
                                                                                                                                                                                                                                 N
       Actuation          Ex-protection proportional solenoid  Connection      Cable gland for cable Ø 6,5…14 mm                      25                                    Q = 6,3 l/min  25                                   Q = 10 l/min
                                                                                                                                                                                                                                 N
                                                                                                                                                                                           20
                                                                                                                                                                            N
                                                                                                                                      20
                                                                                                                                                                                                                                 N
       Ambient temperature  Operation as T6                Attention!  The UL execution is always supplied without cable              15                                                   15                                   Q = 6,3 l/min
                                                                                                                                                                                           10
                                                                                                                                      10
                          -25…+40 °C (L9)                           gland                                                              5                                                    5
                          Operation as T4                                                                                              0                                                    0                                 350 p [bar]
                          -25…+90 °C (L9)                                                                                               0    50  100  150  200  250  300  350 p [bar]        0    50  100  150  200  250  300
                          -25…+70 °C (L15 / L17)
       Weight             1,95 kg                                                                                                   ∆p = f (Q)  Pressure drop volume flow characteristic DN  ∆p = f (Q)  Pressure drop volume flow characteristic DO
       MTTFd              150 years                                                                                                           I = I                                                I = 0 mA
                                                                                                                                                 G
                                                                                                                                       p [bar]                                              p [bar]
                                                                                                                                                                                                                 N
                                                                                                                                                                                                        N
                                                                                                                                                                N
                                                                                                                                                     N
                                                                                                                                      40  K1188     Q = 6,3 l/min  Q = 10 l/min            50  K1164   Q = 6,3 l/min  Q = 10/min
                                                                                                                                      30                                                   40
                                                                                                                                                                                           30
                                                                                                                                      20                                   Q = 25 l/min                                         Q = 25 l/min
                                                                                                                                                                                                                                 N
                                                                                                                                                                            N
       HYDRAULIC SPECIFICATIONS                            ELECTRICAL SPECIFICATIONS                                                                                                       20
                                                                                                                                      10
       Working pressure   p  = 350 bar                      Protection class   IP65 / 66 / 67                                                                                              10
                           max
       Maximum volume flow  Q  = 45 l/min                   Relative duty factor  100 % DF                                             0                                                    0
                           max                                                                                                          0    5    10   15  20   25   30   35  Q [l/min]      0    5   10   15   20   25   30   35  Q [l/min]
       Volume flow direction  1 → 2                         Voltage tolerance  ± 10 % with regard to nominal voltage
       Leakage oil        On request                        Standard nominal   12 VDC, 24 VDC
       Nominal volume flow   Q  = 6,3; 10; 25 l/min         voltage
                           N
       range              at 10 bar valve pressure drop     Limiting current at… °C L9, 40 °C                                      ACCESSORIES                                          MANUAL OVERRIDE
       Hysteresis         ≤ 8 % at optimal dither signal                       I  = 625 mA (12 VDC)                                 Proportional amplifier           Register 1.13      HB4,5 as standard
                                                                               G
       Fluid              Mineral oil, other fluid on request                  I  = 305 mA (24 VDC)                                 Flange body / sandwich plate NG4-Mini  Data sheet 2.6-720
                                                                               G
       Viscosity range    12 mm /s…320 mm /s                                   L15 / 17, 50 °C                                      Flange body / sandwich plate NG6  Data sheet 2.6-740
                               2
                                        2
       Temperature range   Operation as T6                                     I  = 950 mA (12 VDC)                                 Threaded body                    Data sheet 2.9-205  SEALING MATERIAL
                                                                               G
       fluid              NBR -25…+40 °C (L9)                                  I  = 450 mA (24 VDC)                                 Technical explanations           Data sheet 1.0-100  NBR or FKM (Viton) as standard, choice in the type code
                                                                               G
                          FKM -20…+40 °C (L9)                                  L15 / 17, 70 °C
                          Operation as T4                                      I  = 910 mA (12 VDC)                                 Filtration                       Data sheet 1.0-50
                                                                               G
                          NBR -25…+70 °C (L9 or L15 / L17)                     I  = 420 mA (24 VDC)
                                                                               G
                          FKM -20…+70 °C (L15 / L17)        Standard nominal   9 W, 15 W, 17 W
                          FKM -20…+70 °C (L9)               power
       Contamination      Class 18 / 16 / 13                Temperature class  Nominal power 9 W: T1…T6
       efficiency                                                              Nominal power 15 W / 17 W: T1…T4
       Filtration         Required filtration grade ß 6…10 ≥ 75,   Note!  Other electrical specifications see data sheet 1.1-183
                          see data sheet 1.0-50                     and 1.1-184
                         www.wandfluh.com  Illustrations are not binding  Data subject to change  2/4  Edition: 21 21  2.6-535 E                      www.wandfluh.com  Illustrations are not binding  Data subject to change  3/4  Edition: 21 21  2.6-535 E
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