4/3, 4/2 and 3/2 directional valve RE 22282/03.

07
Replaces: 06.05
/12

with fluidic actuation

Type WP, WH

Size 6
Component series 6X (WP), 5X (WH)
Maximum operating pressure 315 bar [4600 psi]
Maximum flow 60 l/min [15.8 gpm]
H6875

Table of contents Features

Contents Page – Direct operated directional spool valve
Features 1 – Type of actuation:
Order code 2 • Pneumatic (WP, WPZ)
• Hydraulic (WH, WHZ)
Standard types 2
– Port pattern as per DIN 24340 form A (without locating bore)
Symbols 3
– Port pattern as per ISO 4401-03-02-0-05, NFPA T3.5.1 MR1
Types of actuation 4
and ANSI B93-7 D03 (with locating bore/anti-rotation pin)
Function, section 5
– For subplates, see data sheet RE 45052
Technical data 6 (separate order)
Characteristic curves 7
Performance limits 8, 9
Unit dimensions 10 to 12

Information on available spare parts:

www.boschrexroth.com/spc
/12 Bosch Rexroth AG Hydraulics WP, WH RE 22282/03.07

Order code

W 6 *

3 service ports =3 Further details in clear text

4 service ports =4
No code = Without locating bore
Directional valve =W /60 5) = With locating bore
Type of actuation Seal material
Pneumatic =P No code = NBR seals
Hydraulic =H V = FKM seals
Connections radial = No code (other seals on enquiry)
Connections axial = Z 1) Caution!
NG 6, ISO4401-3, =6 Observe compatibility of seals with hy-
NFPA/ANSI D03 Interface draulic fluid used!
Spool symbol, e.g. C, E, EA, EB, etc. 2)
No code = Without throttle insert
Type WP B08 4) = Throttle Ø 0.8 mm
Component series 60 to 69 = 6X B10 4) = Throttle Ø 1.0 mm
(60 to 69: unchanged installation and connection dimensions) B12 4) = Throttle Ø 1.2 mm
Type WH
Component series 50 to 59 = 5X 1) Not for variant N“
(50 to 59: unchanged installation and connection dimensions) 2) Symbols and example, see pages 3 and 4
With spring return = No code 3) Only with pneumatic actuation "P"
Without spring return =O 4) Use in the case of flow > performance limit of
Without spring return, with detent = OF the valve, effective in the P-channel.
5) Locating
pin ISO 8752-3x8-St, material no.
Without manual override = No code
R900005694 (separate order)
With manual override = N 3)

Spool positions
2 3 Type WP Type WH
No code • • • •
O • • •
OF • • •
• = available

Standard types
Type WH Material number Type WP Material number
3WH 6 A5X/ R900472229 4WP 6 D6X/ R900752414
4WH 6 D5X/ R900449957 4WP 6 E6X/ R900752415
4WH 6 E5X/ R900476667 4WP 6 G6X/ R900753849
4WH 6 J5X/ R900470475 4WP 6 J6X/ R900752413
4WH 6 Y5X/ R900470211

Further standard types and components can be

found in the EPS (standard price list).
RE 22282/03.07 WP, WH Hydraulics Bosch Rexroth AG /12

Symboles

A B A B A B A B

a b a b a b a b
P T P T P T P T

=A =B

=C =Y

=D

A B A B 1) Example:

a 0 a 0 = .A 1) – Symbol E with spool position “a”

→ ordering code ..EA..
P T P T
– Symbol E with spool position “b”
A B A B → ordering code ..EB..
2) Symbol E1-: P → A/B pre-opening
0 b 0 b = .B 1)
P T P T
Caution!
A B A B
Caution due to pressure intensifcation with single rod cylin-
a 0 b a 0 b ders!
P T P T

= E 1)
=P
= E1- 2)

=F =Q

=G =R

=H =T

=J =U

=L =V

=M =W
/12 Bosch Rexroth AG Hydraulics WP, WH RE 22282/03.07

Types of actuation

Order code Type of actuation

Spool
symbol Actuation side Spool return P (pneumatic) H (hydraulic)
A B A B
a b a b
a b a b
P T P T

A B A B
../O.. a b a b
A, C, D a b a b
P T P T

A B A B
../OF.. a b a b
a b a b
P T P T

A B A B
a b a b
B, Y a b a b
P T P T

A B A B
a a
E, F „a“ 1) = .A a 0 a 0
G, H P T P T
J, L
A B A B
M, P
b b
Q, R „b“ 1) = .B 0 b 0 b
T, U P T P T
V, W
A B A B
a b a b
a 0 b a 0 b
P T P T

1) See symbols on page 3.

RE 22282/03.07 WP, WH Hydraulics Bosch Rexroth AG /12

Function, section
General
6 5 2 1 3 4 5 6
Valves of types WP and WH are fluidi-
cally operated directional spool valves.
They control the start, stop and direction
of a flow.
These directional valves basically con-
sist of housing (1), one or two actuat-
ing elements (2) (hydraulic, pneumatic
actuator), control spool (3) and one or T P T
two return springs (4). The connections
for controlling are arranged radially (type
4WP) (5) or axially (type 4WPZ) (6) . Typ 4WP 6 E6X/... A B
In the non-operated condition, control
spool (3) is held by return springs (4) in
the central or initial position (except for 6 5 2 1 3 4 5 6
impulse spools).
Control spool (3) is shifted by the actu-
ating elements to the required spool po-
sition.

T P T
Throttle insert
The use of a throttle insert is required
when, due to the prevailing operating Typ 4WH 6 E5X/... A B
conditions, flows can occur during the
switching process that are higher than
permitted by the performance limits of
the valve.
It is to be inserted in the P-channel of the
directional valve.

Without spring return, with detent, ver-

sion ..OF/..
Directional valves with hydraulic or pneu-
matic actuation are also available as 2-
position valves with detent (7). When
actuating elements with detent are used,
each spool position can be fixed. 2 7 3 1 4

Without spring return,

version ..O/..
When actuating elements without return
springs and without detent are used, a
defined spool position is not provided in
the on-operated condition.
T P T

Typ 4WP 6 C6X/OF/N... A B

/12 Bosch Rexroth AG Hydraulics WP, WH RE 22282/03.07

Technical data (for applications outside these parameters, please consult us!)

General
Valve type WP WH
Weight – Valve with one actuator kg [lbs] approx. 1,8 [3.97] approx. 2,0 [4.41]
– Valve with two actuators kg [lbs] approx. 2,0 [4.41] approx. 2,2 [4.85]
Installation orientation Optional 1)
Ambient temperature range °C [°F] –30 to +80 [–22 to +176] (NBR seals)
–20 to +80 [–4 to +176] (FKM seals)

Hydraulic
Maximum operating – Ports A, B, P bar [psi] 315 [4600]
pressure – Port T bar [psi] 160 [2320]
With symbols A and B, port T must be used as leakage
port, if the operating pressure is higher than the
permissible tank pressure.
Maximum flow l/min [gpm] 60 [15.8]
Flow cross-section – with symbol Q 6 % of nominal cross-section
(spool position 0) – with symbol W 3 % of nominal cross-section
Minimum pilot pressure bar [psi] 4 (see char. curve on 6 to 10 > tank pressure 2)
page 7
Maximum pilot pressure bar [psi] 10 [145] 200 [2900]
Pilot flow cm3 [in3] 4,24 [0.26] 1,23 [0.075]
Hydraulic fluid Mineral oil (HL, HLP) to DIN 51524 3); fast bio-de-
gradable hydraulic fluids to VDMA 24568 (see also
RE 90221); HETG (rape-seed oil) 3); HEPG (polyg-
lycols) 4); HEES (synthetic esters) 4); other hydraulic
fluids on enquiry
Hydraulic fluid temperature range °C [°F] –30 to +80 [–22 to +176] (NBR seals)
–20 to +80 [–4 to +176] (FKM seals)
Viscosity range mm2/s [SUS] 2,8 to 500 [35 to 2320]
Max. permissible degree of contamination of the hy- Class 20/18/15 5)
draulic fluid - cleanliness class to ISO 4406 (c)
Maximum switching frequency 1/h 7200

1) For version ../O.. (A, C, and D): horizontal

2) Performance limits in dependence on the minimum pilot
pressure, see page 9
3) Suitable for NBR and FKM seals
4) Suitable only for FKM seals
5) The cleanliness classes specified for components must be
adhered to in hydraulic systems. Effective filtration prevents
malfunction and, at the same time, prolongs the service life
of components.
For the selection of filters, see data sheets RE 50070,
RE 50076, RE 50081, RE 50086, RE 50087 and
RE 50088.
 RE 22282/03.07 WP, WH Hydraulics Bosch Rexroth AG /12

Characteristic curves (measured with HLP46, oil ( = 190 SUS) = 40 °C ± 5 °C [104 °F ± 9 °F])
∆p-qV characteristic curves
7 8 10 6
[160] 11
Spool Direction of flow
10 5
[140] symbol P–A P–B A–T B–T
Pressure differential in bar [psi] →

3
A 3 3 – –
[120] 9
8 1 B 3 3 – –
[100] 2 C 1 1 3 1
4 D 5 5 3 3
6
[80] E 3 3 1 1
F 1 3 1 1
[60] 4 G 6 6 9 9
H 2 4 2 2
[40]
J 1 1 2 1
2
[20] L 3 3 4 9
M 2 4 3 3
[0] P 3 1 1 1
0 10 20 30 40 50 60 Q 1 1 2 1
R 5 5 4 –
[0] [2] [4] [6] [8] [10] [12] [14]
T 10 10 9 9
Flow in l/min [gpm] → U 3 3 9 4
V 1 2 1 1
Further characteristic curves:
W 1 1 2 2
7 Symbol “R“ in spool position “b“ (B → A)
Y 5 5 3 3
8 Symbol “G“ and “T“ in central position(P → T)
9 Symbol “H“ in central position (P → T)

Minimum pilot pressure in dependence on tank pressure

[100] 7

[90]
6
[80]
Pilot pressure in bar [psi] →

5
[70]

[60]
4
[50]
3
[40]

[30] 2

[20]
1 At a higher tank pressure, the
[10] minimum pilot pressure must
be increased in accordance
[0] with this diagram.
60 80 100 120 140 160

[1000] [1200] [1400] [1600] [1800] [2000] [2200]

Tank pressure in bar [psi] →

 /12 Bosch Rexroth AG Hydraulics WP, WH RE 22282/03.07

Power limits (measured with HLP46, Öl ( = 190 SUS) = 40 °C ± 5 °C [104 °F ± 9 °F])

The switching function of valves depends on filtration due to With 4-way directional valves, the specified flow data are there-
adhesive effects. To achieve the specified permissible flow val- fore valid for normal applications with 2 directions of flow (e.g.
ues, we recommend full-flow filtration with 25 µm. The flow from P to A and simultaneous return flow from B to T) (see ta-
forces acting within the valves also have an influence on the ble).
flow performance. If the fluid flows in only one direction, the permissible flow may
be significantly lower in critical cases (e.g. use of a 4-way di-
rectional as 3-way directional valve with port A or B blocked).

[4600] 315
2
300
4
[4000]
1 5
Operating pressure in bar [psi] →

[3000]
200

[2000] 6

100
3
[1000]

[0]
0 10 20 30 40 50 60

[0] [2] [4] [6] [8] [10] [12] [14]

Flow in l/min [gpm] →

Char. curve Spool symbol

1 A, B
2 A/O, C, C/O, D, D/O, E, E1-, G,
H, J, L, M, Q, U, W, und Y
3 F, P
4 R
5 T
6 V
 RE 22282/03.07 WP, WH Hydraulics Bosch Rexroth AG /12

Power limits (measured with HLP46, oil ( = 190 SUS) = 40 °C ± 5 °C [104 °F ± 9 °F])
The switching function of valves depends on filtration due to With 4-way directional valves, the specified flow data are there-
adhesive effects. To achieve the specified permissible flow val- fore valid for normal applications with 2 directions of flow (e.g.
ues, we recommend full-flow filtration with 25 µm. The flow from P to A and simultaneous return flow from B to T) (see ta-
forces acting within the valves also have an influence on the ble).
flow performance. If the fluid flows in only one direction, the permissible flow may
be significantly lower in critical cases (e.g. use of a 4-way di-
rectional as 3-way directional valve with port A or B blocked).

[4600] 315
300
8
[4000]
Operating pressure in bar [psi] →

1 3
[3000]
200
11
2
[2000]

100

[1000] 5

6 10 9
4
[0]
0 10 20 30 40 50 60

[0] [2] [4] [6] [8] [10] [12] [14]

Flow in l/min [gpm] →

Pilot pressure 6 bar > tank pressure Pilot pressure 10 bar > tank pressure
Spring return Char. curve Spool symbol Spring return Char. curve Spool symbol
1 A, B 1 A, B
2 C, D, Y 8 C, D, Y, E, G, H, J, L, U,
“No code” M, Q, V, W, E1-
“No code” 3 E, J, L, U, M, Q, V, W, E1-
(with spring 9 F, P
(with spring 4 F, P return)
return) 5 T 10 R

6 G, H 11 T

7 R ../O..
8 A, C, D
../O.. ../OF..
8 A, C, D
../OF..
10/12 Bosch Rexroth AG Hydraulics WP, WH RE 22282/03.07

Unit dimensions: Type WP (nominal dimensions mm [inch])

4 Ø9,4 [ 0.37] 1 4 3 5
G1/8 Ø5,3 [ 0.21]
9

G1/4
10

47 [1.18]
49 [1.93]
42 [1.65]

23 [0.91]
22 [0.87] 64 [2.52]
58 [2.28] 100 [3.94]
158 [6.22]

2 6 7 8
45,9 [1.81] 87,9 [3.46]
[0.276]

F1 F2
7

38 [1.50]
45 [1.77]

A B
P
F4 G F3

[0.53] 13,5
69 [2.72]
0,01/100mm
���������������

Rzmax 4

Required surface quality of the

valve contact face

1 Valve with 2 spool positions and 8 Position of ports to DIN 24340 Form A (without lo-
2 actuators cating bore), or ISO 4401-03-02-0-05 (with locating
Valve with 3 spool positions and bore for locating pin to ISO 8752-3x8-St, material no.
2 actuators R900005694, separate order)
2 Actuator "a" 9 Connection on variant “WP“
3 Actuator "b" 10 Connection on variant “WPZ“
4 Plug screw for valve with 1 actuator (2 spool positions)
5 Manual override, optional (only for version "WP") Subplates and valve mounting bolts, see page 12.
6 Identical seal rings for ports A, B, P, T
7 Nameplate
RE 22282/03.07 WP, WH Hydraulics Bosch Rexroth AG 11/12

Unit dimensions: Type WH (nominal dimensions mm [inch])

Ø15,7; 1 [ 0.62; 0.039 ] 4 1 Ø9,4 [ 0.37] 4 3

G1/8 Ø5,3 [ 0.21]
8

G1/4
9

51 [2.01]
42 [1.65]
23 [0.91]
22,5 [0.89] 64,5 [2.54]
48 [1.89] 90 [3.54]
138 [5.45]

2 5 6 7
36,2 [1.43] 78,2 [3.08]

F1 F2
7

T
[0.276]
45 [1.77]

38 [1.50]
A
P
F4 G F3

11 [0.433]
64 [2.52]
0,01/100mm
���������������

Rzmax 4

Required surface quality of the

valve contact face

1 Valve with 2 spool positions and 7 Position of ports to DIN 24340 form A (without lo-
2 actuators cating bore), or ISO 4401-03-02-0-05 (with locating
Valve with 3 spool positions and bore for locating pin ISO 8752-3x8-St, material no.
2 actuators R900005694, separate order)
2 Actuator "a" 8 Connection on variant “WH“
3 Actuator "b" 9 Connection on variant “WHZ“
4 Cover for valve with 1 actuator (2 spool positions)
5 Identical seal rings for ports A, B, P, T Subplates and valve mounting bolts see page 12.
6 Nameplate
12/12 Bosch Rexroth AG Hydraulics WP, WH RE 22282/03.07

Unit dimensions

Subplates to data sheet RE 45052 (order separately)

(without locating bore) G 341/01 (G1/4)
G 342/01 (G3/8)
G 502/01 (G1/2)
(with locating bore) G 341/60 (G1/4)
G 342/60 (G3/8)
G 502/60 (G1/2)
G 341/12 (SAE-6)
G 342/12 (SAE-8)
G 502/12 (SAE-10)

Valve mounting bolts (order separately)

4 socket head cap screws (SHCS)
ISO 4762 - M5 x 50 - 10.9-flZn-240h-L or 10-24 UNC x 2”
(friction coefficient µtotal = 0.09 to 0.14);
tightening torque MT = 7 Nm [5.2 ft-lbs] ± 10%,
• material number metric R913000064
• material number UNC R978800693
or
4 socket head cap srews (SHCS)
ISO 4762 - M5 x 50 - 10.9
(friction coefficient µtotal = 0.12 to 0.17);
tightening torque MT = 8.1 Nm [6 ft-lbs] ± 10%

Note!
The tightening torque refers to the maximum operating
pressure.

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Hydraulics set forth in it, are the exclusive property of Bosch Rexroth AG. It may not
Zum Eisengießer 1 be reproduced or given to third parties without its consent.
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Phone +49 (0) 93 52 / 18-0 ments concerning a certain condition or suitability for a certain application
Fax +49 (0) 93 52 / 18-23 58
can be derived from our information. The information given does not
documentation@boschrexroth.de
release the user from the obligation of own judgment and verification. It
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must be remembered that our products are subject to a natural process of
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