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EQS Series Hydraulic Valves

EQS Series Hydraulic Valves
EQS Series Hydraulic Valves
Product Code : 11
Product Description

EQS Series


  • Housing: hard-anodized AL alloy and external coating of epoxy powder is suitable for the severe condition especially against the corrosion. Housing is designed in accordance with standard of Explosion-proof and IP67.and also we can offer EQS with IP68 for option.
  • Motor: specially designed with squirrel caged induction motor to generate high starling torque and high efficiency equipped with thermal protector to prevent damage from over heating. It has several features such as high output power, high efficiency and lower noise.
  • PCU: high performance microprocessor, auto-calibration provides the most convenient to user without complicated set in field.
  • Sealing: sealing provided by double 0-ring system.
  • Handwheel: Just by pulling over the lever. operating mode is switched to manual, then just supplying electrical power to actuator. clutch is automatically disengaged from manual and operating mode is switched to electric operation. The size of hand wheel is designed according to required torque to move the actuator. so that operator can easily move the actuator by hand.
  • Gear & self locking: 2nd staged double worm gearing prevents movement caused by backward force transferred from valve and it provides the exact and stable position of actuator and valve when the power is off. High efficiency. high output torque, low noise level are another advantages.
  • Limit switches: directly engaged with driving shaft to set accurate position of valve.Torque switches: to protect actuator from damage caused by over torque from the driven valve over the whole travel.
  • Anti condensation space heater: the switch is open when the temperature is around 20 ±3°C to prevent condensation: The switch is close when the temperature is over 30 ±3°C to prevent over heating.
  • Stopper bolt: stopper bolt installed both close and open direction prevents actuator's travel over the limit during manual operation and also protects internal gearing from its breakaway.
  • Indicator: through the large size indicator window provides better position indication from a distance.
  • Terminal block: it is easy to add the number of strip for additional connection, spring loaded terminal strip is very strong against vibration.
  • Wiring: the inside wiring is so simple and easy to connect.
  • Driving bushing: the driving bushing is removable to process, mounting base is designed according to IS05211. it is convenient to adapt with valve.
  • Lubrication: all the gears and shafts use CIATM221 type Grease Moly, it is not necessary to refill lubricant for 5 years.
  • Anti-interference magnetic loop: it effectively prevents the actuator from outside magnetic field, and keeps the actuator operating stable.
Standard Specification


Weatherproof IP67, NAMUR 4 and 6, (IP68 option ) 0-ring sealed

Main power supply

110 / 220-230VAC / 1Ph / 50 / 60Hz ±10%, 380 /400 /440 / VAC / 3Ph / 50 / 60Hz ±10%

Control power supply

110 / 220-230V AC / 1Ph / 50 / 60Hz ± 10%

Duty Cycle (on-off)

S2: 10Min - 30Min / S4: 20 ~ 50%

Duty Cycle (modulating)

S4: 30 ~ 50%. 300 ~ 1200 start / Hour


Squirrel Caged Induction motor Class F

Limit Switches

2 each for open and close (SPDT 250VAC / 10A rating)

Torque Switches

1 each for open and close (SPDT 250VAC / 10A rating)

Stall protection/set temperature

Built in Thermal protection, open 150°C ±5°C, close 97°C ±15°C

Travel angle

90° ± 5' (0' ~ 100° )

Position indicator

Continuous mechanical indicator



Self locking

Provided by double worm gearing(no brake)

Mechanical stopper

1 each for each travel end(open and close).external and adjustable


5W (110 / 220 230VAC) for Anti-condensation

Cable entries

2 x PF 3/4"

Ambient temperature

Basic type: -20°C ~ +70"C option: -40°C ~ + 100°C

Ambient humidity

10% RH Min. 100% RH Max. Non-Condensing.

Anti vibration

XYZ 10g. 02 ~ 34Hz, 30 minutes

External coating

Dry power (Polyester)


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