DIRECTIONAL SPOOL VALVES, DIRECT OPERATED, WITH FLUIDIC ACTUATION

WP 10

Material #: R900931178

4/3-, 4/2- or 3/2-way version Porting pattern according to ISO 4401-05-04-0-05 Operating methods: pneumatic

This product is not available. Please call 888-REXROTH to speak to a local distrubutor who can assist in locating your part or a suitable replacement

4/3-, 4/2- or 3/2-way version Porting pattern according to ISO 4401-05-04-0-05 Operating methods: pneumatic

Valves of type WP are fluidically actuated directional spool valves.

They control the start, stop and direction of a flow.

The directional valves basically consist of housing (1), one type of actuation (2.2) (pneumatic actuation cylinder), control spool (3) and one or two return springs (4).

When de-energized, the control spool (3) is held in the central position or in the initial position by the return springs (4) (except for version "O").

The control spool (3) is moved to the desired spool position by means of the types of actuation.

Throttle insert

The use of a throttle insert is required when, due to prevailing operating conditions, flows occur during the switching processes which exceed the performance limit of the valve.

01

02

03

04

05

06

07

08

09

10

11

WP

10

5X

/

/

no code

*

01

3 main ports

3

4 main ports

4

Types of actuation

02

Fluidic: pilot pressure 8 … 160 bar

WP

03

Size 10

10

04

Symbols e. g. C, E, EA, EB, etc.; for the possible version, see Symbols and Types of actuation

05

Component series 50 … 59 (50 … 59: unchanged installation and connection dimensions)

5X

06

With spring return

no code

Without spring return (not for valve with 3 spool positions)

O

Without spring return with detent (not for valve with 3 spool positions)

OF

Corrosion protection

07

Standard corrosion protection

no code

Throttle insert1)

08

Without throttle insert

no code

With throttle insert:

Connection

Throttle Ø in mm

0,8 mm

1,0 mm

1,2 mm

P

B08

B10

B12

A

H08

H10

H12

B

R08

R10

R12

A and B

N08

N10

N12

T 2)

X08

X10

X12

Further throttle insert diameters upon request.

Seal material

09

NBR seals

M

FKM seals

V

Seals for HFC hydraulic fluids

MH

Observe compatibility of seals with hydraulic fluid used.

Pilot oil port

10

Whitworth pipe thread G1/4

UNF thread 7/16 “ - 20 UNF

/12

11

Further details in the plain text

*

1) When the admissible valve performance limit is exceeded, throttle inserts are to be installed (see Performance limits).
2) When throttle inserts are used in channel T, the pressure in the working ports and in case of connection to the tank chambers must not exceed 210 bar.

general

Size

10

Weight

Valve with one actuation cylinder

kg

2.9

Valve with two actuation cylinders

kg

3.7

Installation position

any

Ambient temperature range

NBR seals

°C

-20 … +70

FKM seals

°C

-15 … +70

Storage temperature range

°C

-20 … +50

hydraulic

Size

10

Maximum operating pressure

Port P

bar

350

Port A

bar

350

Port B

bar

350

Port T 1)

bar

210

Maximum flow

l/min

160

Pilot pressure

bar

8 … 160

Pilot volume

cm³

6.9

Hydraulic fluid

see table

Hydraulic fluid temperature range 2)

NBR seals

°C

-20 … +80

FKM seals

°C

-15 … +80

Viscosity range

mm²/s

2.8 … 500

Maximum admissible degree of contamination of the hydraulic fluid 3)

Class 20/18/15 according to ISO 4406 (c)
1) With symbols A or B, port T must be used as leakage oil connection if the operating pressure exceeds the admissible tank pressure.
2) at the valve working ports of the valve
3) The cleanliness classes specified for the components must be adhered to in hydraulic systems. Effective filtration prevents faults and simultaneously increases the life cycle of the components. For the selection of the filters, see www.boschrexroth.com/filter.

Hydraulic fluid

Classification

Suitable sealing materials

Standards

Mineral oils and related hydrocarbons

HL, HLP, HLPD, HVLP, HVLPD

NBR, FKM

DIN 51524

Bio-degradable

Insoluble in water

HETG

NBR, FKM

VDMA 24568

HEES

FKM

Soluble in water

HEPG

FKM

VDMA 24568

Containing water

Water-free

HFDU, HFDR

FKM

ISO 12922

Containing water

HFC (Fuchs Hydrotherm 46M, Petrofer Ultra Safe 620)

 

NBR

 

ISO 12922

Important information on hydraulic fluids!

For further information and data on the use of other hydraulic fluids, please refer to data sheet 90220 or contact us! There may be limitations regarding the technical valve data (temperature, pressure range, life cycle, maintenance intervals, etc.)!

Flame-resistant – containing water:

Maximum pressure differential per control edge 50 bar. Pressure pre-loading at the tank port >20% of the pressure differential; otherwise, increased cavitation Life cycle compared to operation with mineral oil HL, HLP 50 to 100 %

For applications outside these parameters, please consult us!

(measured with HLP46, ϑOil = 40 ±5 °C)

Δp-qV characteristic curves

Symbol

Direction of flow

P ‒ A

P ‒ B

A ‒ T

B ‒ T

A; B

6

6

C

1

2

5

7

D

2

2

5

7

E

17

16

19

21

F

2

3

22

23

G

4

4

24

24

H

14

14

20

21

J

3

3

9

11

J73

22

21

23

24

L

3

3

9

9

M

14

14

6

8

P

17

14

20

23

Q

16

17

4

8

R

18

21

18

24

T

18

4

10

24

U

3

3

6

11

V

17

17

18

20

W

upon request

Central position:

Symbol

Direction of flow

P ‒ A

P ‒ B

B ‒ T

A ‒ T

P ‒ T

H

12

12

13

13

15

Performance limits

(measured with HLP46, ϑOil = 40 ±5 °C)

 

Notice!

The specified performance limits are valid for use with two directions of flow (e. g. from P to A and simultaneous return flow from B to T).

Due to the flow forces acting within the valves, the admissible performance limit may be considerably lower with only one direction of flow (e. g. from P to A while port B is blocked)!

In such use cases, please consult us!

Characteristic curve

Symbol

11

C, C/OF, D, D/OF, E, J, L, M, U

12

B

13

A

14

G

15

H

1) Example:Symbol E with spool position “a” → ordering code ..EA..Symbol E with spool position “b" → ordering code ..EB..

Dimensions in mm

Dimensions in mm

Notices!

Deviating from ISO 4401, port T is referred to as TA and port T1 is referred to as TB in this data sheet. The dimensions are nominal dimensions which are subject to tolerances. When screwing in/releasing the connection tube on the pilot oil port (9), the bushing (10) must be secured against twisting by using an open-end wrench.

Subplates according to data sheet 45054 (separate order)

G 66/01 (G3/8) 1)

G 67/01 (G1/2) 1)

G 534/01 (G3/4) 1)

G 66/12 (SAE-6; 9/16-18) 2)

G 67/12 (SAE-8; 3/4-16) 2)

G 534/12 (SAE-12; 1-1/16-12) 2)

 

Valve mounting screws (separate order)

4 hexagon socket head cap screws, metric

ISO 4762 - M6 x 40 - 10.9-flZn-240h-L

(friction coefficient μtotal = 0.09 to 0.14);

tightening torque MA =  12.5 Nm ± 10 %,

material no. R913000058

or

4 hexagon socket head cap screws

ISO 4762 - M6 x 40 - 10.9 (self procurement)

(friction coefficient μtotal = 0.12 to 0.17);

tightening torque MA = 15.5 Nm ± 10 %

 

4 hexagon socket head cap screws UNC

1/4-20 UNC x 1-1/2” ASTM-A574

(friction coefficient μtotal = 0.19 to 0.24);

tightening torque MA = 25 Nm ± 15 %,

(friction coefficient μtotal = 0.12 to 0.17);

tightening torque MA = 19 Nm ± 10 %,

material no. R978800710

 

With different friction coefficients, the tightening torques are to be adjusted accordingly!