4WRA(E) direct acting proportional directional valve-Hengli Hydraulics

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• Direct acting proportional direction valve, used to control the flow and direction of the liquid flow

• Panel mounted form

• The spool action is driven by threaded proportional electromagnets and the coil can be removed separately

• Spool spring alignment

• Optional with built-in amplifier, 4WRAE... L2X type input can be A1 or F1

• External amplifier supply

Hydraulic

Installation			Optional, preferably horizontal
Nominal size			6	10
Weight	4WRA...L2X	Kg	2.0	6.6
	4WRAE...L2X		2.2	6.8
Nominal flow Qvnom at Δp = 10 bar		L/min	7, 15, 26	30, 60
Hysteresis		%	≤5
Reversal span		%	≤1
Response sensitivity		%	≤ 0.5
Max.operating pressure	Ports A, B, P	bar	315
	Port T	bar	210
Pressure fluid			Mineral oil (HL, HLP) to DIN 51524
			Other pressure fluids on request!
Ambient air temperature range	4WRA...L2X	℃	-20℃ to 70℃ (-4° F to 158° F)
	4WRAE...L2X	℃	-20℃ to 50℃ (-4° F to 122° F)
Viscosity range		mm²/s	20 to 380 (preferably 30 to 46)
Fluid Cleanliness Class			NAS1638 class9 or ISO 4406 class 20/18/15

Electrical

1) Solenoid data
Voltage type			DC
Command value signal for 4WRAE			±10V or 4 ～ 20mA
Max.current per solenoid		A	2.5	1.5	0.8
Solenoid coil resistance	Cold value at 20℃	Ω	2	4.8	19.5
	Max. warm value		3	7.2	28.8
Duty		%	ED100%
Max.coil temperature		℃	150
Valve protection to EN 60529			IP 65
2) Control electronics
Amplifier	4WRA...L2X		VT-VSPA2-...-L2X
	4WRAE...L2X		Integrated in the valve (OBE)
Supply voltage	Nominal voltage	VDC	24
	Lower limiting value	V	21/22 (4WRA), 19 (4WRAE)
	Upper limiting value	V	35
Amplifier power consumption	Imax	A	<1.8
	Impulse current	A	3

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