4WE6E5X/BW120RNVP1Z2
Manufacturer: Bosch Rexroth
Material #: R901459599
Model : 4WE6E5X/BW120RNVP1Z2
***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 4WE6E5X/BW120RNVP1Z2 (R901459599) is a high-performance directional spool valve designed for controlling the start, stop, and direction of flow in hydraulic systems. This particular model features two solenoid-actuated spool positions without a detent in its deenergized state, meaning there is no defined spool position until energized. The valve operates with wet-pin solenoids that require hydraulic fluid in the pressure chamber to function correctly.
Equipped with a manual override, operators can manually adjust the control spool even when the solenoids are not energized. The design includes one or two return springs that reset the control spool to its rest position after de-energization of the solenoids. It should be noted that due to design reasons, internal leakage may occur and potentially increase over the life cycle of the valve.
The 4WE6E5X/BW120RNVP1Z2 valve is suitable for use in potentially explosive atmospheres and meets the requirements of the Explosion Protection Directive EU for both mining (IM) and gas environments (IIG). It offers maximum safety with Type of protection Ex ib I Mb / Ex ib II C T Gb according to EN standards. The porting pattern adheres to ISO standards, ensuring compatibility with a wide range of systems.
This model also includes throttle inserts ('...B'), which are essential when operating conditions produce flows during switching processes that exceed the performance limit of the valve. With options for wet-pin AC or DC solenoids, electrical connections can be made either individually or via piping connection NPT. The component series X indicates its modern design iteration, capable of handling maximum operating pressures up to bar and maximum flow rates up to l/min, making it a versatile choice for various hydraulic applications within its specified explosion protection parameters.
$2,463.00 USD
More are expected on May 12, 2025
Status: This product is temporarily out of stock.
Qty: Delivered as early as May 12, 2025 when ordered in
This product is eligible for factory repair.
Directional valves of type WE are solenoid-actuated directional spool valves. They control the start, stop and direction of a flow.
The directional valves basically consist of the housing (1), one or two solenoids (2), the control spool (3), and one or two return springs (4).
In the de-energized condition, the control spool (3) is held in the central position or in the initial position by the return springs (4) (except for impulse spools). The control spool (3) is actuated by wet-pin solenoids in hydraulic fluid (2).
To ensure proper functioning, make sure that the pressure chamber of the solenoid is filled with hydraulic fluid.
The force of the solenoid (2) acts via the plunger (5) on the control spool (3) and pushes the latter from its rest position to the required end position. This enables the necessary direction of flow from P → A and B → T or P → B and A → T.
After de-excitation of the solenoid (2), the return spring (4) pushes the control spool (3) back to its rest position.
A manual override (6) allows control spool (3) to be moved without solenoid energization.
Without spring return “O” (only possible with symbol D)
This version is a directional valve with two spool positions and two solenoids without detent. In the de-energized condition, there is no defined spool position.
Without spring return, with detent “OF" (Impulse spool, only possible with symbol D)
This version is a directional valve with two spool positions, two solenoids and one detent.
It alternately locks the two spool positions and the solenoid therefore does not need to be permanently energized.
Notice:
For design reasons, internal leakage, which may increase over the life cycle, is inherent to the valves.
Type 4WE 6 E5X/.B..NVP1Z2
Throttle insert "...B"
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.
(measured with HLP46, ϑOil = 40 °C ±5 °C)
Δp-qV characteristic curves
|
Symbol |
Direction of flow |
|||||
|
P – A |
P – B |
A – T |
B – T |
B – A |
P – T |
|
|
D, Y |
5 |
5 |
3 |
3 |
– |
– |
|
E |
3 |
3 |
1 |
1 |
– |
– |
|
J |
1 |
1 |
2 |
1 |
– |
– |
|
G |
6 |
6 |
9 |
9 |
– |
8 |
|
C |
3 |
3 |
5 |
3 |
– |
– |
|
H |
2 |
1 |
2 |
2 |
– |
– |
|
T |
8 |
8 |
4 |
4 |
– |
– |
| Other symbols upon request |
Performance limits (measured with HLP46, ϑOil = 40 °C ± 5 °C)
Notice:
The specified performance limits are valid for use with two directions of flow (e. g. from P → A and simultaneous return flow from B → 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 → A while port B is blocked).
In such cases, please consult us.
The performance limits were determined when the solenoids were at operating temperature, at 10 % undervoltage and without tank preloading.
Direct voltage "G24"
|
Characteristic curve |
Symbol |
|
1 |
J |
|
2 |
G |
|
3 |
E |
|
4 |
D |
|
5 |
C |
|
6 |
H |
|
7 |
Y |
|
8 |
D/OF |
|
9 |
T |
AC voltage “W120R”
|
Characteristic curve |
Symbol |
|
1 |
J |
|
2 |
G |
|
3 |
E |
|
4 |
D |
|
5 |
C |
|
6 |
H |
|
7 |
Y |
|
8 |
D/OF |
Symbols
| 1) |
Example: Symbol E with spool position "a" ordering code ..EA.. |
Notices:
Representation according to DIN ISO 1219-1.
Hydraulic interim positions are shown by dashes.
Circuit diagram
The FM-tested valve solenoid of the valve is equipped with a connection compartment and an NPT connection thread (NPT 1/2") for pipelines.
The connection is polarity-independent.
Notice:
When establishing the electrical connection, the protective grounding conductor (PE) has to be connected properly.
Connectable operating voltage conductors and protective grounding conductors
|
Function |
Maximum connectable line cross-section |
|
Terminal area, rated connection (min. 0.13 mm2) |
2.5 mm2 |
|
Conductor connection cross-section AWG (min. AWG 26) |
AWG 14 |
|
Single-wire, min. H05(07) V-U 0.13 mm2 |
2.5 mm2 |
|
Finely stranded, min. H05(07) V-K 0.13 mm2 |
2.5 mm2 |
|
Wire end ferrule with collar DIN 46 228/4 (min. 0.25 mm2) |
1.5 mm2 |
|
Wire end ferrule according to DIN 46 228/1 (min. 0.25 mm2) |
1.5 mm2 |
Connection line
|
Line type |
non-armored cables and lines (outer sheath sealing) | |
|
Temperature range |
°C |
-20 … ≥ +110 |
Over-current fuse and switch-off voltage peaks
|
Voltage data in the valve type code |
Nominal voltage valve solenoid |
Rated current valve solenoid |
Recommended pre-fuse characteristic: medium time-lag according to DIN 41571 |
Maximum voltage value when switching off |
Rated current |
Interference protection circuit |
|
G24 |
24 V DC |
0.899 A DC |
100 mA |
–36 V |
1.65 A |
Suppressor diode bi-directional |
|
W120R |
120 V AC |
0.221 A DC |
200 mA |
– |
0.384 A |
Bridge rectifier 1000 V |
Notice:
Corresponding to the rated current, a fuse according to DIN 41571 and EN / IEC 60127 has to be connected upstream of every valve solenoid (max. 3 x IG).
The shut-off threshold of the fuse has to match the prospective short-circuit current of the supply source.
The prospective short-circuit current of the supply source may amount to a maximum of 1500 A.
This fuse may only be installed outside the potentially explosive area or must be of an explosion-proof design.
When inductivities are switched off, voltage peaks result which may cause faults in the connected control electronics.
The voltage peak must be damped by a suitable external circuitry. We recommend a circuitry with a suppressor diode with a limitation voltage of approx. 50 V.
Dimensions in mm
|
|
Required surface quality of the valve contact surface |
|
1 |
Solenoid |
|
2 |
Terminal box |
|
3 |
Manual override "N" |
|
4 |
Identical seal rings for ports P, A, B, T |
|
5 |
Cap for valves with one solenoid |
|
6 |
Name plate |
|
7 |
Porting pattern according to ISO 4401-03-02-0-05 (with locating hole for locking pin ISO 8752-3x8-St, material no. R900005694, separate order) |
|
8 |
Piping connection NPT 1/2” |
Valve mounting screws (separate order)
For reasons of stability, use exclusively the following valve mounting screws:
4 hexagon socket head cap screws
ISO 4762 - M5 x 50 - 10.9-CM-Fe-ZnNi-5-Cn-T0-H-B
(friction coefficient μtotal = 0.09 … 0.14);
material no. R913043758
Subplates (separate order) with porting pattern according to ISO 4401-03-02-0-05 , see data sheet 45100.
Installation conditions (dimensions in mm)
|
Single assembly |
Bank assembly |
|
|
Subplate dimensions |
Minimum dimensions: |
Minimum cross-section: |
|
Thermal conductivity of the subplate (EN-GJS-500-7) |
≥ 38 W/mK |
|
|
Minimum distance between the longitudinal valve axes |
see schematic diagram below |
|
Schematic diagram
Dimensions in mm
Notice:
Observe the "Special application conditions for safe application" see technical data.
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