Electro Hydraulic Servo Valve(CSDY)

Robust structure; Stable zero; High contamination resistance; Long working life; good quality; reasonable price

CSDY1/CSDY2 electro-hydraulic servo valve is the latest product among the electro-hydraulic servo valves in the world. It adopts dry-type torque motor, wholly welded, jet pipe and main slide valve which are flow control valves with high capability in 2-way direction. It can receive weak electric signal and convert the signal into hydraulic power amplification. The output flow is proportional to the control electric signal.

The valves can be used in high accuracy electric hydraulic control systems in various fields, like shipbuilding industry, aerospace and aeronautic industry, heavy industry, light and textile industry, as well as in the mechanical hydraulic servo system for agriculture machinery.

Characteristics:

CSDY1/CSDY2 represents the most advanced technology in electro hydraulic servo valve.

1) Robust structure. The valves can withstand class I vibration, class I shock and impact of 400g acceleration.

2) Stable zero. The stability of zero is better than that of dual jet plate valve and the valves are more reliable.

3) high resolution.

4) strong capability against pollution. They can use 7-8 hydraulic oil of 7-8 NAS1638.

5) Long working life. They can be used for more than 107 times. ( about 5000 hours per time)

6) High control accuracy.

Main Technical Index1.Type: CSDY1-2,4,8,10,15,20,30,40(CSDY2-60,80,100,120)2.Rated current: ±8mA3.Resistance of coil: 1000±100Ω4.Insulation resistance: >50MΩ5.Rated pressure: 206×105Pa6.Operation pressure: (20~309)×105Pa7.Rated flow: 2,4,8,10,15,20,30,40L/min (Model CSDY2:60,80,100,120L/min)

8.Hysteresis: <3%9.Linearity: <7.5%10.Symmetry: 10%11.Flow consumption at static state: <0.45+3%Qn12.Pressure gain: >30%Ps/1%13.Threshold: <0.25%14.Bias: <2%15.Zero drift: < 2%16.Frequency response: (-3db)>70Hz (-90°)>90Hz17.Temperature range: -40C~+85C18.Fluid dynamic viscosity: 10-100cst19.Filter accuracy for system: 10~20u

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Electro Hydraulic Servo Valve(CSDY)