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Solenoid operated spool valve
                                                                                     Solenoid operated spool valve


            GENERAL SPECIFICATIONS                               HYDRAULIC SPECIFICATIONS
             Designation        4/2-, 4/3-spool valve             Working pressure   p  max  = 350 bar (p  < 20 bar)
                                                                                                T
             Construction       Direct operated                                      p  max  = 315 bar (p  > 20 bar)
                                                                                                T
             Mounting           Flange construction               Tank pressure      p Tmax  = 160 bar
             Nominal size       NG4-Mini according to Wandfluh    Maximum volume flow  Q  = 30 l/min, see characteristic
                                                                                      max
                                standard                          Leakage oil        See characteristics
             Actuation          Ex-protection switching solenoid  Fluid              Mineral oil, other fluid on request
             Ambient temperature  Operation as T6                 Viscosity range    12 mm /s…320 mm /s
                                                                                                  2
                                                                                         2
                                -25…+40 °C (L9)                   Temperature range   Operation as T6
                                Operation as T4                   fluid              NBR -25…+40 °C (L9)
                                -25…+90 °C (L9)                                      FKM -20…+40 °C (L9)
                                -25…+70 °C (L15 / L17)                               Operation as T4
                                -40…+70 °C (L15 / L17)                               NBR -25…+70 °C (L9 or L15 / L17)
             Weight             2,6 kg (1 solenoid)                                  FKM -20…+70 °C (L9 or L15 / L17)
                                4,4 kg (2 solenoids)                                 NBR 872 -40…+70 °C (L15 / L17)
             MTTFd              150 years                         Contamination      Class 20 / 18 / 14
                                                                  efficiency
                                                                  Filtration         Required filtration grade ß 10…16 ≥ 75,
                                                                                     see data sheet 1.0-50



            ELECTRICAL SPECIFICATIONS                            MANUAL OVERRIDE
             Protection class   IP65 / 66 / 67                   HB6 as standard
             Relative duty factor  100 % DF                      Optionally: HN (K)
             Switching frequency  12'000 / h                     → see data sheet 1.1-311
             Voltage tolerance  ± 10 % with regard to nominal voltage
             Standard nominal   12 VDC, 24VDC, 115 VAC, 230 VAC  SURFACE TREATMENT
             voltage            AC = 50 to 60 Hz ± 2 %, with built-in   ◆  The valve body is painted with a two component paint
                                two-way rectifier                 ◆  The armature tube, the slip-on coil and the plug screw are
             Standard nominal   9 W, 15 W, 17 W                    zinc-nickel coated
             power
             Temperature class  Nominal power 9 W: T1…T6         COMMISSIONING
                                Nominal power 15 W / 17 W: T1…T4
                                                                 Attention!  The solenoid coil must only be put into operation, if the
            Note!    Other electrical specifications see data sheet 1.1-183     requirements of the operating instructions supplied are
                     and 1.1-184                                          observed to their full extent. In case of non-observance,
                                                                          no liability can be assumed.


            PERFORMANCE SPECIFICATIONS
            Oil viscosity u = 30 mm /s
                             2

             p = f (Q)  Performance limits L15 / L17              p = f (Q)  Performance limits L9
                       Measured with nominal voltage -10% at 50 °C          Measured with nominal voltage -10% at 40 °C
                       Standard                                             Execution L9 90 °C on request
                 p [bar]                      ADB/BEA/AFB             p [bar]               AFB     AB1
              350  K1027                                           350  K1026                              AB3/ACB
              300                                     AB1/AB3      300                                     ADB/AGB
                                                      ACB/AGB
              250                                                  250
              200                                                  200
              150                                                  150                                     BEA
              100                                                  100
               50                                                   50
                0                                                    0
                  0    5     10   15    20    25   30  Q [l/min]       0       5       10       15      20  Q [l/min]




                                www.wandfluh.com  Illustrations are not binding  Data subject to change  3/5  Edition: 21 18  1.3-24 E
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