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Electro - Hydraulic Proportional Flow and Directional Control Valve


Item / Model No. ESD-G01-**10  
20  
-12  		 ESD-G03-**
40-(**)-12
 80-(**)-12		 ESD-G04-
**140-(**)-12		 ESD-G06-
**250-(**)-13
Maximum operating pressure
MPa {kgf/cm2}		 25 {255}
Rated flow rate L/min 10/20(*1) 40/80(*1) 140(*1) 250(*1)
Maximum flow rate L/min 25(*2) 100(*2) 140(*2) 250(*2)
Pilot pressure
MPa {kgf/cm2}		 - At least 1.0 {10}(*3)
Pilot flow rate L/min - At least 2
(*4)		 At least 3
(*4)		 At least 5
(*4)
T port allowable back pressure
MPa {kgf/cm2}		 25 {25.5} Internal Drain: 2.5 {25.5}
External Drain: 21 {214}
Rated current mA 850
Coil resistance 20(20°C)
Hysteresis % 5 max.(*5)
Response time s 0.04(*6) 0.05(*6) 0.08(*6) 0.1(*6)
Mass kg 2.2 7 9.2 15

Notes : *1.Value when pressure drop volume to P to A and P to B is P =1.0MPa {10kgf/cm2}.

*2.Indicates maximum throughput volume value between each port.

*3.Indicates differential between the pilot port and tank port, or drain port.

*4.Value when 0.1 second is assumed for the response time from zero to the rated flow volume.

*5.Value when a Nachi-Fujikoshi special amplifier is used.

*6.Response time is typical value for a supply pressure of 14MPa {143kgf/cm2} and fluid temperature of 40°C (kinematic viscosity: 40mm2/s).

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