Process Control Systems
Process Control Systems
Edge Position Control Systems



The NIRECO Servojet is an industrial servo valve for converting electric signals (-200 - 0 - +200mA DC) into hydraulic signals, which is used mainly for EPC® in iron and steel plants. The NIRECO Servojet uses a highly reliable jet pipe system with extensive experience of use to ensure high operability and easy maintenance.

  • A dry detecting unit that is not affected by magnetic dust in oil reduces periodic maintenance work .
  • A jet pipe system with extensive experience of use provides hydraulic control.
  • A servo mechanism for handing low to high flowrates is available in combination with a variety of gain boosters.
  • A wide range of gain boosters is available with hydraulic pressures of 0.8(8) - 14 MPa.
  • A simple structure allows for disassembly, reassembly, and adjustment in your plant.
  • Easy operation and maintenance
  • The amount of oil used by the jet pipe has been approximately halved compared to conventional models.


Single Servojet Controller
Input signal: +200 - 0 - -200mA DC (zero balance)
Resistance of moving coil: About 20Ω
Supply oil pressure: 1.2MPa
Jet pipe capacity*: About 3.5ℓ/min (at 1.2MPa)
Hysteresis error: Less than 2%
Fluctuation of neutral point: Less than 2%
Manifold Controller
Model of manifold controller M4SJ240 M5SJ240 M6SJ240
Gain booster BO9M BO9HM BO10M
Maximum hydraulic pressure MPa 5 14 10
Mass kg : About 23 About 28 About 48
Hydraulic pressure of jet pipe 1.2MPa
Permissible back pressure of return oil 0.1MPa