SERVOVALVES

UG-176 (with magnet zero adjustment) UG-177 (explosion-proof design) Direct Drive Valve UG-133M Servovalve RM400-400

PM15-500 (small-size servovalve) EGU-202 (two-channel electrohydraulic servovalve) EGU-203 (two-channel electrohydraulic servovalve) UG-83B

UG-176 (with magnet zero adjustment)

Application: railway repair equipment; testing equipment; machine-tool construction; metallurgy

Technical characteristics
Rated flow at p=70 kgf/cm2, l/min	rom 4 up to 85
Operating pressure range, kgf/cm2	70...280
Control coil resistance, Ohm	from 20 up to 1000
Mass, kg, maximum	1.3

UG-177 (explosion-proof design)

Application: gas-compressor stations; equipment operating in explosive medium.

Technical characteristics
Operating pressure range, kgf/cm2	70...210
Rated flow at p=70 kgf/cm2, l/min	20/40
Control coil resistance, Ohm	from 20 up to 1000
Mass, kg, maximum	1,1

Direct Drive Valve UG-133M

DDV is used to control operating fluid flow in hydraulic system.

Technical characteristics
Rated flow at ∆P=7MPa , l/min	5,10,20,40
Threshold, % of Urated, maximum	0,5
Null bias, % of Urated, maximum	2,0
Hysteresis, % of Urated, maximum	0,5
Electronic module supply voltage, V	22…28
Mass, kg, maximum	2

Servovalve RM400-400

This servovalve is used to control fluid flow in accordance with a control signal

Application: manipulators, machine automatic adjustment systems.

Technical characteristics
Pressure differential in the pressure line, kgf/cm2	70
Rated flow at ∆P = 70 kgf/cm2, l/min	10…35
Coil resistance, Ohm	220
Mass, kg, maximum	0,66

PM15-500
(small-size servovalve)

This small-size servovalve is used to control flow in accordance with control signals.

Application: flight control actuators, manipulators, automatic control systems where mass requirements are stringent.

Technical characteristics
Operating pressure range, kgf/cm2	210 … 280
Rated flow at ∆P = 210 kgf/cm2, l/min	from 0.3 up to 4
Coil resistance, Ohm	220
Mass, kg	maximum 0,35

EGU-202
(two-channel electrohydraulic servovalve)

It is intended to be used in control systems with high redundancy level:

• two electrical control channels;
• two-coil torque motor;
• two spool position feedback transducers;
• friction-free moving elastic pipe supporting the armature and the flapper;
• washing of the control stage filter with fluid stream of the second stage;
• positioning pin in the valve base preventing a wrong installation.

Technical characteristics
rated flow range at control signal 3.75 V	from 1.5 up to 20 l/min
each coil resistance	220±22 Ohm
supply pressure	from 70 up to 280 kgf/cm2
transducer power supply	alternating current in the view of sinusoidal form with voltage 12 0.6 V and frequency 2400 120 Hz
mass, kg, maximum	0.65

EGU-203
(two-channel electrohydraulic servovalve)

It is intended to be used in control systems with high redundancy level:

• two electrical control channels;
• two-coil torque motor;
• two spool position feedback transducers;
• friction-free moving elastic pipe supporting the armature and the flapper;
• washing of the control stage filter with fluid stream of the second stage;
• positioning pin in the valve base preventing a wrong installation.

UG-83B

Application: flight control actuators, manipulators, automatic control systems with severe requirements for mass

Technical characteristics
Operating pressure, kgf/cm2	210
Rated flow, l/min	12±1,2
Frequency at 90-deg out of phase (P=210 kgf/cm2, Icontrol = 25%Irated), Hz	200
Rated control current, mA, at - parallel connection	10
Control circuit resistance, Ohm	500
Each winding resistance	1000
Mass, kg, maximum	0,4