4WRZ32W6-520-7X/6EG24XEJ/D3V
Manufacturer: Bosch Rexroth
Material #: R901149529
Model : 4WRZ32W6-520-7X/6EG24XEJ/D3V
***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Bosch Rexroth directly.***
The Bosch Rexroth 4WRZ32W6-520-7X/6EG24XEJ/D3V (R901149529) is a sophisticated pilot-operated proportional directional control valve designed for precision hydraulic flow control. This valve integrates a type DREP pilot control valve, which functions as a pressure reducing valve, modulating pressure based on the electrical input signal received from proportional solenoids. The 4WRZ32W6-520-7X/6EG24XEJ/D3V features wet-pin DC solenoids that are externally controlled and offers users the capability to finely tune hydraulic operations through its responsive solenoid actuation.
The unit is constructed with a robust housing that includes a control spool with pressure measuring pins and central thread. When the solenoids are deenergized, the compression springs hold the control spool in a central position, allowing free flow of hydraulic fluid to the tank. Actuation of a proportional solenoid adjusts the control spool, regulating the connection between ports and maintaining set pressure levels proportionally to the current supplied to the solenoid.
This model presents two spool positions and comes in versions DREPA and DREPB, each equipped with one solenoid (A or B), simplifying its operation. The main valve comprises a main control spool and centering spring, which are proportionally controlled by the pilot valve to manage flow direction and size.
Notably designed for use in potentially explosive atmospheres, this size 32 valve adheres to ISO standards for porting patterns and is suitable for subplate mounting. It boasts an impressive maximum operating pressure of 350 bar and can handle maximum flow rates up to 1200 l/min. The explosion protection compliance ensures its application within hazardous environments according to EU Directive IIG with Ex eb mb IIC T4 Gb protection for its solenoids as per EN standards.
In summary, Bosch Rexroth's 4WRZ32W6-520-7X/6EG24XEJ/D3V offers precise hydraulic control in demanding applications where reliability and safety in explosive environments are paramount.
$35,453.00 USD
More are expected on May 19, 2025
Status: This product is temporarily out of stock.
Qty: Delivered as early as May 19, 2025 when ordered in
This product is eligible for factory repair.
Pilot control valve, type 3DREP 6…
The pilot control valve is a 3-way pressure reducing valve that is actuated by a proportional solenoid. It converts an electrical input signal into a proportional pressure output signal and is used for all valves type 4WRZ...
The proportional solenoids are controllable wet-pin DC solenoids. The solenoids are controlled by external control electronics.
Set-up:
The valve basically consists of:
Housing (1) with connection surface Control spool (2) with pressure measuring pins (3 and 4) Solenoids (5 and 6) with central threadFunction:
The pressure in A or B is set by means of the proportional solenoids. The amount of the pressure depends on the current.
With de-energized solenoids (5, 6), the control spool (2) is held in the central position by means of the compression springs (8). Ports A and B are connected with T so that the hydraulic fluid can flow off to the tank without obstructions.
By actuating a proportional solenoid, e.g. solenoid "b" (5), the pressure measuring pin (4) and the control spool with it (2) are moved to the left. This opens the connection from P to A and B to T via orifice-type cross-sections with progressive flow characteristics. With the surface of the pressure measuring pin (3) the pressure that builds up in channel A acts on the control spool and against the solenoid force. The pressure measuring pin (3) is supported by the solenoid "a". If the pressure exceeds the value set at solenoid “b”, the control spool (2) is pushed back against the solenoid force and connects A with T until the set pressure is achieved again. The pressure is proportional to the solenoid current.
When the solenoid is switched off, the control spool (2) is returned to the central position by the compression springs (8).
Valve with two spool positions
(Version “3DREP 6…A…” and “3DREP 6…B…”)
The function of this valve version basically corresponds to the valve with three spool positions. This 2 spool position valve is, however, only equipped with solenoid “b” ((5); version “A”) or solenoid “a” ((6); version “B”). Instead of the 2nd proportional solenoid, there is a plug screw (7 or 9).
Notes:
Regarding valves of the version “3DREP 6 C”, only one solenoid may be actuated at a time. The tank line must not be allowed to run empty. With corresponding installation conditions, a preload valve (preload pressure approx. 2 bar) must be installed.Type 3DREP 6..2X/..XE…
Pilot-operated proportional directional valve type, 4WRZ …XE...
Valves of the type 4WRZ... are pilot-operated 4-directional valves that are actuated by means of proportional solenoids. Their function is to control the flow direction and size.
Set-up:
The valve basically consists of:
Pilot control valve (9) with proportional solenoids (5 and 6) Main valve (10) with main control spool (11) and centering spring (12)Function:
With de-energized solenoids (5 and 6), the main control spool (11) is held in central position by means of a centering spring (12) The main control spool (11) is controlled by the pilot control valve (9); the main control spool is proportionally moved, e.g. by actuating solenoid "b" (6) The control spool (2) is moved to the right, pilot oil enters the pressure chamber (13) via the pilot control valve (9) and deflects the main control spool (11) proportionally to the electric input signal to the left Connection from P → A and B → T via orifice-type cross-sections with progressive flow characteristic Pilot oil supply to the pilot control valve internally via port P or externally via port X Switching off the solenoid (6) The control spool (2) and main control spool (11) are moved back into the central position Flow depending on spool position from P → A and B → T or P → B and A → T.Type 4WRZ...-7X./...
(measured with symbol E, W6-, EA, W6A, HLP46, ϑOil = 40 ±5 °C)
Size 10
Rated flow 25 l/min
Size 10
Rated flow 50 l/min
Size 10
Rated flow 85 l/min
Size 10
Transition function with stepped electric input signals
Size 16
Rated flow 100 l/min
Size 16
Rated flow 125 l/min
Size 16
Rated flow 150 l/min
Size 16
Rated flow 180 l/min
Size 16
Transition function with stepped electric input signals
Size 25
Rated flow 220 l/min
Size 25
Rated flow 325 l/min
NG25
Transition function with stepped electric input signals
Size 32
Rated flow 360 l/min
Size 32
Rated flow 520 l/min
Size 32
Transition function with stepped electric input signals
|
Δp = pP – pL – pT (according to DIN 24311) |
|
|
Δp |
Valve pressure differential |
|
pP |
Inlet pressure |
|
pL |
Load pressure |
|
pT |
Return flow pressure |
(measured with HLP46, ϑÖl = 40 ±5 °C)
Symbols
|
With symbols E1- and W8-, the following applies: |
|
|
P → A: qvmax |
B → T: qv/2 |
|
P → B: qv/2 |
A → T: qvmax |
|
With symbols E3- and W9-, the following applies: |
|
|
P → A: qvmax |
B → T: blocked |
|
P → B: qv/2 |
A → T: qvmax |
|
(Differential circuit, piston top at port A) |
|
|
Notice: |
|
Pilot oil supply
|
3 Switching positions |
2 Switching positions (Version ".A)" |
|
|
|
Type 4WRZ …
External pilot oil supply, external pilot oil return The pilot oil is supplied from a separate control circuit (external). The pilot oil return is not directed into channel T of the main valve, but is separately directed to the tank via port Y (external). |
|
|
Type 4WRZ …E…
Internal pilot oil supply, external pilot oil return
The pilot oil supply is implemented from channel P of the main valve (internally). The pilot oil return is not directed into channel T of the main valve, but is separately directed to the tank via port Y (external). In the subplate, port X is to be closed. |
|
|
Type 4WRZ …ET…
Internal pilot oil supply; internal pilot oil return
The pilot oil supply is implemented from channel P of the main valve (internally). The pilot oil is directly returned to channel T of the main valve (internally). In the subplate, ports X and Y are to be closed. |
|
|
Type 4WRZ …T…
External pilot oil supply, internal pilot oil return
The pilot oil is supplied from a separate control circuit (external). The pilot oil is directly returned to channel T of the main valve (internally). In the subplate, port Y is to be closed. |
The type-examination tested valve solenoid of the valve is equipped with one terminal box and a type-tested cable entry.
The connection is polarity-independent.
Notice:
When establishing the electrical connection, the protective earthing conductor PE has to be connected properly.
| 1) |
Recommended pre-fusecharacteristics: medium time-lag according to DIN 41571; 1.25 A |
Properties of the connection terminals and mounting elements
|
Position |
Function |
Connectable line cross-section |
|
1 |
Operating voltage connection |
Single-wire 0.75 … 2.5 mm2 |
|
Finely stranded,0.75 … 1.5 mm2 |
||
|
2 |
Connection for protective earthing conductor |
Single-wire 2.5 mm2 max. |
|
Finely stranded, 1.5 mm2 max. |
||
|
3 |
Connection for potential equalization conductor |
Single-wired, 4 … 6 mm2 |
|
Finely stranded, 4 mm2 |
Cable gland
|
Type approval |
II 2G Ex e IIC Gb |
|
Threaded connection |
M20 x 1,5 |
|
Protection class according to DIN EN 60529 |
IP66 (with correctly installed electrical connection) |
|
Line diameter |
7 … 10,5 mm |
|
Sealing |
Outer sheath sealing |
Connection line
|
Line type |
Non-armored cables and lines (outer sheath sealing) |
|
Temperature range |
–30 … > +110 °C |
Size 10
Dimensions in mm
|
|
Required surface quality of the valve contact surface |
|
1 |
Main valve |
|
2 |
Pilot control valve |
|
3 |
Proportional solenoid "a" |
|
4 |
Proportional solenoid "b" |
|
5 |
Terminal box |
|
6 |
Plug screw for valve with one solenoid |
|
7 |
Name plate pilot control valve |
|
8 |
Name plate main valve |
|
9 |
Pressure reducing valve (always available) |
|
10 |
Identical seal rings for ports P, A, B, T and T1 |
|
11 |
Identical seal rings for ports X and Y |
|
12 |
Machined valve contact surface; Porting pattern according to ISO 4401-05-05-0-05 (ports X and Y as required, T1 is available at the valve and can optionally be provided) |
Valve mounting screws (separate order):
For reasons of stability, exclusively the following valve mounting screws are to be used:
4 hexagon socket head cap screws
ISO 4762 - M6 x 45 - 10.9-CM-Fe-ZnNi-5-Cn-T0-H-B
(friction coefficient μtotal = 0.09 … 0.14)
Tightening torque MA = 13 Nm ±10 %,
material no. R913043777
Subplates (separate order) with porting pattern according to ISO 4401-05-05-0-05, see data sheet 45100.
Size 16
Dimensions in mm
|
|
|
Required surface quality of the valve contact surface |
|
1 |
Main valve |
|
2 |
Pilot control valve |
|
3 |
Proportional solenoid "a" |
|
4 |
Proportional solenoid "b" |
|
5 |
Terminal box |
|
6 |
Plug screw for valve with one solenoid |
|
7 |
Name plate pilot control valve |
|
8 |
Name plate main valve |
|
9 |
Pressure reducing valve (always available) |
|
10 |
Identical seal rings for ports A, B, P, and T (not with version “100” and “150”) |
|
11 |
Identical seal rings for ports X and Y |
|
12 |
Machined valve contact surface; Porting pattern according to ISO 4401-07-07-0-05 (ports X and Y as required) |
|
13 |
Locating pin |
Valve mounting screws (separate order):
For reasons of stability, exclusively the following valve mounting screws are to be used:
2 hexagon socket head cap screws
ISO 4762 - M6 x 60 - 10.9-CM-Fe-ZnNi-5-Cn-T0-H-B
(friction coefficient μtotal = 0.09 … 0.14)
Tightening torque MA = 12.2 Nm ±10 %,
material no. R913043410
4 hexagon socket head cap screws ISO 4762 - M10 x 60 - 10.9-flZn/nc/480h/C
(friction coefficient μtotal = 0.09 … 0.14)
Tightening torque MA = 58 Nm ±20 %,
material no. R913014770
Subplates (separate order) with porting pattern according to ISO 4401-07-07-0-05, see data sheet 45100.
Size 25
Dimensions in mm
|
|
|
Required surface quality of the valve contact surface |
|
1 |
Main valve |
|
2 |
Pilot control valve |
|
3 |
Proportional solenoid "a" |
|
4 |
Proportional solenoid "b" |
|
5 |
Terminal box |
|
6 |
Plug screw for valve with one solenoid |
|
7 |
Name plate pilot control valve |
|
8 |
Name plate main valve |
|
9 |
Pressure reducing valve (always available) |
|
10 |
Identical seal rings for ports A, B, P, and T |
|
11 |
Identical seal rings for ports X and Y |
|
12 |
Machined valve contact surface; Porting pattern according to ISO 4401-08-08-0-05 (ports X and Y as required) |
|
13 |
Locating pin |
Valve mounting screws (separate order):
For reasons of stability, exclusively the following valve mounting screws are to be used:
6 hexagon socket head cap screws ISO 4762 - M12 x 60 - 10.9-flZn/nc/480h/C
(friction coefficient μtotal = 0.09 … 0.14)
Tightening torque MA = 100 Nm ±20 %,
material no. R913015613
Subplates (separate order) with porting pattern according to ISO 4401-08-08-0-05 see data sheet 45100.
Size 32
Dimensions in mm
|
|
|
Required surface quality of the valve contact surface |
|
1 |
Main valve |
|
2 |
Pilot control valve |
|
3 |
Proportional solenoid "a" |
|
4 |
Proportional solenoid "b" |
|
5 |
Terminal box |
|
6 |
Plug screw for valve with one solenoid |
|
7 |
Name plate pilot control valve |
|
8 |
Name plate main valve |
|
9 |
Pressure reducing valve (always available) |
|
10 |
Identical seal rings for ports A, B, P, and T |
|
11 |
Identical seal rings for ports X and Y |
|
12 |
Machined valve contact surface; Porting pattern according to ISO 4401-10-09-0-05 (Ports X and Y as required) |
|
13 |
Locating pin |
Valve mounting screws (separate order):
For reasons of stability, exclusively the following valve mounting screws are to be used:
6 hexagon socket head cap screws ISO 4762 - M20 x 80 - 10.9-flZn/nc/480h/C
(friction coefficient μtotal = 0.09 … 0.14)
Tightening torque MA = 340 Nm ±20 %,
Material no. R913008472
Subplates (separate order) with porting pattern according to ISO 4401-10-09-0-05 see data sheet 45100.
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