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hydraulic directional control valves

Product Description

Hydraulic directional control valves for aluminum extrusion machine

 va 001  va 002

WE6 type 6x series wet solenoid operated directional valve NG 6 pressure up to 31.5 Mpa flowrate up to 80 L/min

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Principle of operation

WE type directional control valve is operated by the solenoid to control flow direction and on-off the valve is mainly comprised of valve body (1) one or two solenoids (2) control spool (3) and one or two reset springs(4) When cutting off electricity the control spool(3) is on center or original position by reset spring (4) cexcept for pulse valve The control spool(3) is operated by wet solenoid(2)


To ensure for obtaining satisfied with operation, the pressure cavity of solenoid must be filled with oil. The force of solenoid(2) going through rod (5) is acting on control spool (3) it will push on required position while on static position. The oil freely flows from P to A, B, to T P to B or A to T When the solenoid (2) off the control spool(3) will be pushed on original position by reset spring(4) For selection of manual urgent operation (6) can control the spool (3) motion when the solenoid is off


4WE 6..6X/O...type (only limiting symbol A.C.D)
The type consists of two switching positions and two solenoids without positions directional control valve


4WE 6..6X/OF...(pulse valve, only limiting symbol A.C.D)
It consists of two switching position two solenoide and one positioner directional control valve Two switching positions are respectively fixed so the solenoid needn't requiring for long time woking


Insert throttling valve (4WE 6..6X/.../B..)
Because of especial working state when switching it may appear as exceeding function curve of allowance flow under this condition it needs to mount insert thnttling plug The plug is mounted on P port of directional control valve.

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Mounting position

      

Slective

The highest ambient temperature

  

t

°C

To 50

Weight

With one solenoid valve

m

kg

1.45

With two solenoid valve

m

kg

1.95

Max working pressure

Port A, B, P

P

MPa

31.5

Port T

P

MPa

To 21(=); to 16(-)
If working pressure exceeds allowance pressure for spool A and B of the valve port T must be as leakage port

Max flow

qv

  

L/min

To 80(=); To 60(~)

Flow area (switching position O )

Spool Q

A

mm2

About rated area 6%

Spool W

A

mm2

About rated area 3%

Hydraulic oil
1) apply to perbunan seal viton seal
2) for use only viton seal

Mineral oil (HL,HLP) DIN51 524 1);
Quick biologic dissolve oil according to VDMA 24 568;
HETG (rape seed oil);
HEPG(polyglycol); HEES(synthetic ester)2);
Other oil as required

Oil temperature changing range

°C

-30 to +80(with perbunan seal)

-20 to +80 (with viton seal)

Viscosity range

mm2/s

2.8 to 500

Contaminant degree

The high contaminant class of oil is the ninth class of NAS 1638 recommend to use the oil filter with minimal filter fineness β10≥75

 

Electricity data

Volt type

    

DC

AC

Available volt

U

V

12, 24, 42, 60, 96, 110, 180, 205,220

42, 110, 120, 220, 50/60Hz

Allowed volt (allowance volt )

  

%

±10

  

Power requirement

P

W

30

-

Power keep

P

VA

-

50

Power impetus

P

VA

-

220

Work repeating

    

100%

100%

Time repeating press on

T

ms

25 to 45

10 to 20

ISO 6403 off

T

ms

10 to 25

15 to 40

Switching frequency

time/h

To 15000

To 7200

Insulation degree according to DIN40050

IP65

IP65

Coil temperatare

°C

To +150

To+180

It is correlative stipulated electric wire must be grounded

  

 

 

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7 symbol "R"is on switching position A-B
8 symbol "G"and "T"is on center position P-T

Switching function limit (be measured when ν=41mm2 /s t=50°C)

Working limit for giving is useful for two direction flowing condition (as for P port flow to A of returning of B to T at the same time )
When single direction flow (if the port from P to A B is plugged )because of flow strenth in the valve allowance switching limit may fall cloun
Working limit is measured when solenoid is on working temperature owing volt 10% and the reservoir without bearing pressure
 

DC solenoid
Exemplification:G24:24V

AC solenoid
Exemplification:W230:230V,5Hz

AC solenoid
Exemplification:W230:230V,5Hz
 

Curve

Symbol

Curve

Symbol

Curve

  
 

1
2
3
4
5
6
7
8
9
10

A, B
V
A, B
F, P
J
G, H, T
A/O, A/OF, L, U
C, D, Y
M
E, R, C/O, C/OF
D/O, D/OF, Q, W

11
12
13
14
15
16
17

18

A, B
V
A, B
F, P
G, T
H
A/O, A/OF, C/O, C/OF
D/O, D/OF, E, J, L
M, Q, R, U, W
C, D, Y

19
20
21
22
23
24
25
26
27
28

  

 

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1.1 Solenoid "a"(grey plug-in connector)
1.2 Solenoid "b" (black plug-in connector)
2. Manual urgent operation
3.Size of solenoid "N"with manual urgent operation
4.Plug-in connector according to DIN43650
5.Name plate
6.O-ring
7. For use one plug of solenoid valve
8. Take off plug-in connector for space request
9. Take off coil for space request
10. Fixed screw nut tightened torque M =4Nm
11.Mounting surface according to DIN24 340, A type
ISO 4401 and CETOP-RP 121 H
bed plate
G341/01(G1/4")
G342/01(G3/8")
G502/01(G1/2")
Fixed screw of the valve M5X50 GB70-85-10.9
Tightened torque MA=8.9Nm

External dimensions: valve with AC solenoid cooperated with surface fine machining requirement

1.Connection surface of the valve 2.Plate tangent 3.Fixed screw of the valve
4. Fixed screw of the valve four pieces M5X50 GB70-85-10.9 torque 9N.m

Connection bed plate

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Valve pictures:

Features:

Plug in type solenoid valve for easier to replace the weak coils.

All spools and bodies are interchangeable by retaining the same tolerance of internal leakage.

The wet type of solenoid valve, which is movable parts are immersed in the oil. It brings the feature of low noise.

High voltage test up to 1500v/min.

Insulation resistance test exceeds 100MΩ

The momentary signal shifting takes approx. 0.1 sec.

Spool shifting approx. 30,000,000 times

H class insulation coils which can resisted up to 180°C