licPumpsHydrauilCooerSMPSeriesEectricPumpsSpecaPumpsManuaPumpsBatteryPumpsPTPllilOl Descriptions of Electric Pump FunctionsWhen operating a single-acting cylinder with a TKmodel pump, the drain from the separatelyinstalled directional control valve should beconnected directly to the return port on the tankmounting plate. *Refer to the figure below.The piston of the single-acting cylinder may extendor the extended piston may not return even if thedirectional control valve (EHV-3) is fully open.■Example of hydraulic circuitSingle-acting cylindersTK platesTK model pumpModel ■MP-10SB ■EMP-5D-PA ■EMP-5TKHydraulic symbolSolenoid operation electric pumps for double-acting cylinders (SB and S models)EMP-5SB（-PA）EMP-6SB（-PA）MP-10SB（-PA）MP-12HSB（-PA）MP-12SB（-PA）MP-15HSB（-PA）MP-15S（-PA）MP-17HSMP-20HSMP-17SMP-20SSolenoid operation electric pumps for single-acting cylinders (D-PA models)MP-4D-PAEMP-5D-PAEMP-6D-PAMP-10D-PAElectric pumps for separately-installed operating valves (TK models)EMP-5TKEMP-6TKMP-10TKMP-12HTKMP-12TKMP-15HTKMP-15TKMP-17HTKMP-17TKMP-20HTKMP-20TKElectric PumpsDirection-Control ValvesThe return port on the tank mounting plate*Fitting and pipe are neededFunctionsBy using the 4-way 3-position spool-type solenoidoperated directional valve, the pump operates adouble-acting cylinder.The hydraulic oil returns from the pump to the oil tankat the neutral position.(For details on xx(x)-PA models, see 77 page.)By using a 2-way solenoid valve, the pump operatesa single-acting cylinder.For details, see page 77.Equipped with a plate having outlet and return ports.An external direction-control valve is mounted beforeuse.Attached operating valveESW-4B-2MSW-4B-2SOW-44B-2SOW-R-46-2SOW-R-48-2KD-2S-1KD-2S-2GSL-24-2ETK-1TK-10TK-3TK-4TK-3TK-17TK-4TK-20No.79E since202576
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