Accessories for R900248811

PROPORTIONAL DIRECTIONAL VALVE 4WRZ10W6-25-7X/6EG24N9EK4/D3M

Manufacturer: Bosch Rexroth

Material #: R900248811

Model : 4WRZ10W6-25-7X/6EG24N9EK4/D3M

***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 4WRZ10W6-25-7X/6EG24N9EK4/D3M (R900248811) is a high-performance industrial hydraulic valve designed to provide reliable control of oil flow direction in accordance with its spool symbol, symbol W. This pilot-operated spool valve features internal pilot oil supply and external pilot oil return, along with a pressure reducing valve for precise operation. It's equipped for electrical actuation with external electronics and includes a concealed manual override as well as auxiliary actuation for enhanced control. This model is notable for its subplate mounting capability, conforming to the NFPA T3.5.1 R2 D03 and ISO 4401 porting patterns, which ensures compatibility with standard mounting surfaces. The electrical connection is facilitated through a Connector pole PE according to EN standards, ensuring secure and reliable connections. With a size designation of CETOP 03 and capable of handling a nominal flow rate, this valve operates at a supply voltage of 24 VDC. The Bosch Rexroth 4WRZ10W6-25-7X/6EG24N9EK4/D3M valve is specifically designed to accommodate various hydraulic fluids including HL, HLP, HLPD, HVLP, HVLPD, and HFC types while utilizing NBR seals to maintain integrity under diverse conditions. Its robust construction allows it to withstand maximum operating pressures up to bar and manage maximum flow rates up to l/min. This valve's functionality includes the ability to move the main control spool proportionally in response to electric input signals through its pilot control valve setup. This enables precise modulation of flow from P to A and B to T or vice versa depending on the spool position. Additionally, this model offers safety features such as warnings against accidental activation of the manual override which could result in unintended machine movements. Overall, the Bosch Rexroth 4WRZ10W6-25-7X/6EG24N9EK4/D3M valve stands out for its adaptability in controlling fluid dynamics within complex hydraulic systems while maintaining high levels of performance and reliability.

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This product is eligible for factory repair.

Repairs from $925.00

PROPORTIONAL DIRECTIONAL VALVE 4WRZ10W6-25-7X/6EG24N9EK4/D3M

Size 10, symbol W6, electrical with external electronics, 24 V DC

Industrial hydraulic valve in a high performance range, reliable control of oil flow direction according to hydraulic symbol

Unpacked Weight: 8.28 kg

Pilot-operated 2-stage proportional directional valve without integrated electronics (OBE) Control of the direction and magnitude of a flow Operation by means of proportional solenoids with central thread and detachable coil For subplate mounting: Porting pattern according to ISO 4401 Optional auxiliary operating device Spring-centered control spool

Pilot-operated proportional directional valves type 4WRZ(E)… and 5WRZ(E).52…

Valves of type 4WRZ(E)... are pilot-operated 4-directional valves that are actuated by means of proportional solenoids. Their function is to control the flow direction and size.

Valves of type 5WRZ(E)... are equipped with an additional port "R" (only NG52).

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, 6), the main control spool (11) is held in the central position by means of the 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

→ Connection from P to A and B to T via orifice-type cross-sections with progressive flow characteristics

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

Depending on the spool position, flow occurs from P to A and B to T or P to B and A to T (R)

An optional manual override (14 and 15) can be used to move the control spool (2) without solenoid energization.

Notice:

Accidental activation of the manual override may lead to uncontrolled machine movements!

Notice:

Due to the design principle, internal leakage which may increase over the life cycle is inherent to the valves.

With concealed manual override: With concealed auxiliary actuation
Spool valve
Pilot-operated
Internal pilot oil supply, external pilot oil return
With pressure reducing valve
Component series 7X
Maximum operating pressure 350 bar
Size 10 … 32
Maximum flow 1600 l/min

Data Sheet	Download Data Sheet
Manual	Download Manual
Manual	Download Manual
Manual	Download Manual
Manual	Download Manual
Manual	Download Manual

Connection diagram	ISO 4401-05-05-0-05
Max. pressure	315
Max. flow	170
Spool symbol	Symbol W6
Type of connection	Subplate mounting
Nominal flow	25
Size	10
Type of actuation	Electrical with external electronics
Number of ports	4
Number of switching positions	3
Supply voltage	24 VDC
Electrical connector	Connector 3-pole (2 + PE)
Electrical connection description	Connector 3-pole (2 + PE) according to EN 175301-803
Hydraulic fluid	HL,HLP,HLPD,HVLP,HVLPD,HFC
Seals	NBR
Productgroup ID	9,10,11,12,13,14
Connection diagram NFPA	NFPA T3.5.1 R2-2002 D05
Size_CETOP	D05
Weight	8.28

01	02	03	04	05		06	07		08	09	10	11	12	13	14	15	16
4	WRZ				‒	7X		/	6E	G24							*

01	4 main ports	4
02	Proportional directional valve with electro-hydraulic operation and external electronics	WRZ
03	Size 10	10
	Size 16	16
	Size 25	25
	Size 32	32
	Size 52	52
04	Symbols; for the possible version, see "Symbols/Circuit diagrams"	E; E1-; E3-; W6-; W8-; W9-; EA; W6A
Rated flow NG10
05	25 l/min	25
	50 l/min	50
	90 l/min	85
Rated flow NG16
05	100 l/min	100
	125 l/min	125
	150 l/min	150
	180 l/min	180
Rated flow NG25
05	220 l/min	220
05	325 l/min	325
Rated flow NG32
05	360 l/min	360
05	520 l/min	520
Rated flow NG52
05	1000 l/min	1000
06	Component series 70 ... 79 (70 ... 79: unchanged installation and connection dimensions)	7X
07	For subplate mounting	no code
07	For flange connection (only NG 52)	F
08	Pilot control valve NG6 Proportional solenoid with detachable coil	6E
09	Supply voltage 24 V	G24
10	Without manual override	no code
10	With concealed manual override	N9 1)
11	Without special type of protection	no code
11	Sea water-resistant	J 2)
Pilot oil supply and return
12	External pilot oil supply, external pilot oil return	no code
	Internal pilot oil supply, external pilot oil return	E
	Pilot oil supply internal, pilot oil return internal	ET
	External pilot oil supply, internal pilot oil return	T
Electrical connection
13	Without mating connector, with connector according to DIN EN 175301-803, separate order	K43)
13	Without mating connector, with connector according to DIN EN 175301-804, separate order	K31 3)
14	Without pressure reducing valve	no code
14	With pressure reducing valve ZDR 6 DP0-4X/40YM-W80 (fixedly set)	D3
15	NBR seals	M
15	FKM seals	V
16	Further details in the plain text	*
1)	With version “J” → “N” instead of “N9”
2)	For data regarding the seawater-resistant version refer to data sheet 29115-M
3)	For version "J" = seawater-resistant only "K31"

For applications outside these parameters, please consult us!

general

Type			4WRZ
Size			10	16	25	32	52
Installation position			any, preferably horizontal
Ambient temperature range		°C	-20 … +70
Storage temperature range		°C	-20 … +80
Weight	For subplate mounting	kg	7.8	11.9	18.2	42.2	79.5
	for flange connection	kg					77.5
	with "D3"	kg	8.3	12.4	18.7	42.7	80
Sine test according to DIN EN 60068-2-6			10 cycles, 10…2000.. 10 Hz with logarithmic frequency changing speed of 1 octave/min, 5 to 57 Hz, amplitude 1.5 mm (p-p), 57 to 2000 Hz, amplitude 10g, 3 axes
Noise test according to DIN EN 60068-2-64			20…2000 Hz, amplitude 0.05g2/Hz (10gRMS) 3 axes, testing time 30 min per axis
Shock test according to DIN EN 60068-2-27			Half-sine 15g / 11 ms, 3 times in positive and 3 times in negative direction per axis, 3 axes
Damp heat according to DIN EN 60068-2-30			Variant 2: +25 °C … +55 °C, 90 % … 97 % relative humidity, 2 cycles á 24 hours

hydraulic

Size				10	16	25	32	52
Maximum operating pressure			bar	315	350
Operating pressure range	External pilot oil supply		bar	30 … 100				20 … 100
	Pilot control valve without "D3", internal pilot oil return		bar	30 … 100
	Internal pilot oil supply		bar	100 … 315	100 … 350
Maximum return flow pressure	Port T and R, external pilot oil return		bar	315	250		150	250
	Port T, internal pilot oil return		bar	30
	Port Y		bar	30
Maximum flow			l/min	170	460	870	1600	2800
Nominal flow			l/min	25 50 85	100 125 150 180	220 325	360 520	1000
Pilot flow	input signal 0 → 100%	Port X and Y	l/min	3.5	5.5	7	15.9	7
Pilot volume	switching process 0 → 100%		cm³	1.7	4.6	10	26.5	54.3
Hydraulic fluid temperature range			°C	-20 … +80
	preferably		°C	-40 … +50
Viscosity range			mm²/s	20 … 380
	preferably		mm²/s	30 … 46
Maximum admissible degree of contamination of the hydraulic fluid, cleanliness class according to ISO 4406 (c) 1)	Pilot control valve			Class 18/16/13 according to ISO 4406 (c)
	Main valve			Class 20/18/15 according to ISO 4406 (c)
Hysteresis			%	≤ 6

1)	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.

electrical

Size			10	16	25	32	52
Voltage type			Direct voltage
Command value overlap		%	15
Maximum solenoid current		A	1.5
Solenoid coil resistance	Cold value at 20 °C	Ω	4.8
	Maximum hot value	Ω	7.2
Actuated time		%	100
Maximum coil temperature 1)		°C	+ 150
Protection class according to DIN EN 60529			IP65 (with mating connector mounted and locked)
Power supply		V	24
Supply voltage range		V	19.4 … 35

1)	Due to the surface temperatures occurring at the solenoid coils, the European standards ISO 13732-1 and EN 982 need to be adhered to.

Hydraulic fluid	Classification	Suitable sealing materials	Standards
Mineral oils and related hydrocarbons	HL, HLP	NBR / FKM	DIN 51524
Flame-resistant - containing water	HFC (Fuchs HYDROTHERM 46M, Petrofer Ultra Safe 620)	NBR	ISO 12922
Important information on hydraulic fluids: For more information and data on the use of other hydraulic fluids please contact us. There may be limitations regarding the technical valve data (temperature, pressure range, life cycle, maintenance intervals, etc.). The flash point of the process and operating medium used must be 40 K over the maximum solenoid surface temperature. Flame-resistant - containing water: Maximum pressure differential per control edge 175 bar Pressure pre-loading at the tank port > 20 % of the pressure differential, otherwise increased cavitation Life cycle as compared to operation with mineral oil HL, HLP 50 % to 100 %

(measured with HLP46, ϑÖl = 40 ±5 °C)

Rated flow 25 l/min at a valve pressure differential of 10 bar

Size 10

Rated flow 50 l/min at a valve pressure differential of 10 bar

Size 10

Rated flow 85 l/min at a valve pressure differential of 10 bar

Size 10

Transition function with stepped electric input signals (ps = 50 bar)

Rated flow 100 l/min at a valve pressure differential of 10 bar

Size 16

Rated flow 125 l/min at a valve pressure differential of 10 bar

Size 16

Rated flow 150 l/min at a valve pressure differential of 10 bar

Size 16

Rated flow 180 l/min at a valve pressure differential of 10 bar

Size 16

Transition function with stepped electric input signals (ps = 50 bar)

Size 16

Rated flow 220 l/min at a valve pressure differential of 10 bar

NG25

Rated flow 325 l/min at a valve pressure differential of 10 bar

NG25

Transition function with stepped electric input signals (ps = 50 bar)

NG25

Rated flow 360 l/min at a valve pressure differential of 10 bar

Size 32

Rated flow 520 l/min at a valve pressure differential of 10 bar

Size 32

Transition function with stepped electric input signals (ps = 50 bar)

Size 32

Rated flow 1000 l/min at a valve pressure differential of 10 bar

NG52

Transition function with stepped electric input signals (ps = 50 bar)

NG52

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: With symbols W6-, W8-, W9- and W6A, there is - in the “0” spool position - a connection from A →T and B → T with less than 2% of the relevant nominal cross-section.

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.

Connection at mating connector

Connection at connector

Size 10

Dimensions in mm

1	Main valve
2	Pilot control valve
3	Dimension for version 4WRZ (not seawater-resistant)
4	Dimension for version 4WRZE
5	Proportional solenoid "a"
6	Proportional solenoid "b"
7	Mating connector "A", color gray, separate order
8	Mating connector "B", color black, separate order
9	Mating connector according to DIN EN 175201-804, separate order
10	Concealed manual override “N9”
11	Plug screw for valve with one solenoid
12	Name plate pilot control valve
13	Name plate main valve
14	Integrated electronics (OBE)
15	"D3” pressure reducing valve
16	Identical seal rings for ports A, B, P and T (T1)
17	Identical seal rings for ports X and Y
18	Space required to remove the mating connector
19	Diversion plate
20	Machined valve contact surface; Porting pattern according to ISO 4401-05-05-0-05 - Ports X and Y as required

Recommended valve mounting screws (separate order):

4 hexagon socket head cap screws ISO 4762 - M6 x 45 - 10.9-flZn-240h-L

Tightening torque MA = 13.5 Nm ± 10 %, material no. R913000258 or

4 hexagon socket head cap screws ISO 4762 - M6 x 45 - 10.9

Tightening torque MA = 15.5 Nm ± 10 %

Size 16

Dimensions in mm

1	Main valve
2	Pilot control valve
3	Dimension for version 4WRZ (not seawater-resistant)
4	Dimension for version 4WRZE
5	Proportional solenoid "a"
6	Proportional solenoid "b"
7	Mating connector "A", color gray, separate order
8	Mating connector "B", color black, separate order
9	Mating connector according to DIN EN 175201-804, separate order
10	Concealed manual override “N9”
11	Plug screw for valve with one solenoid
12	Name plate pilot control valve
13	Name plate main valve
14	Integrated electronics (OBE)
15	"D3” pressure reducing valve
16	Identical seal rings for ports A, B, P, and T
17	Identical seal rings for ports X and Y
18	Space required to remove the mating connector
19	Diversion plate
20	Machined valve contact surface; Porting pattern according to ISO 4401-07-07-0-05 Deviating from the standard: Ports P, A, B, T Ø20 mm Minimum screw-in depth: - Ferrous metal 1.5 x Ø - Non-ferrous metal 2 x Ø
21	Locking pin

Recommended valve mounting screws (separate order):

2 hexagon socket head cap screws ISO 4762 - M6 x 60 - 10.9-flZn-240h-L

Tightening torque MA = 12.2 Nm ± 10 % , material no. R913000115

4 hexagon socket head cap screws ISO 4762 - M10 x 60 - 10.9-flZn-240h-L

Tightening torque MA = 58 Nm ± 20 %, material no. R913000116 or

2 hexagon socket head cap screws ISO 4762 - M6 x 60 - 10.9

Tightening torque MA = 15.5 Nm ± 10 %

4 hexagon socket head cap screws ISO 4762 - M10 x 60 - 10.9

Tightening torque MA = 75 Nm ± 20 %

NG25

Dimensions in mm

1	Main valve
2	Pilot control valve
3	Dimension for version 4WRZ (not seawater-resistant)
4	Dimension for version 4WRZE
5	Proportional solenoid "a"
6	Proportional solenoid "b"
7	Mating connector "A", color gray, separate order
8	Mating connector "B", color black, separate order
9	Mating connector according to DIN EN 175201-804, separate order
10	Concealed manual override “N9”
11	Plug screw for valve with one solenoid
12	Name plate pilot control valve
13	Name plate main valve
14	Integrated electronics (OBE)
15	"D3” pressure reducing valve
16	Identical seal rings for ports A, B, P, and T
17	Identical seal rings for ports X and Y
18	Space required to remove the mating connector
19	Diversion plate
20	Machined valve contact surface; Porting pattern according to ISO 4401-08-08-0-05 (ports X and Y as required)
21	Locking pin

Recommended valve mounting screws (separate order):

6 hexagon socket head cap screws ISO 4762 - M12 x 60 - 10.9-flZn-240h-L

Tightening torque MA = 100 Nm ± 20 %, material no. R913000121 or

6 hexagon socket head cap screws ISO 4762 - M12 x 60 - 10.9

Tightening torque MA = 130 Nm ± 20 %

Size 32

Dimensions in mm

1	Main valve
2	Pilot control valve
3	Dimension for version 4WRZ (not seawater-resistant)
4	Dimension for version 4WRZE
5	Proportional solenoid "a"
6	Proportional solenoid "b"
7	Mating connector "A", color gray, separate order
8	Mating connector "B", color black, separate order
9	Mating connector according to DIN EN 175201-804, separate order
10	Concealed manual override “N9”
11	Plug screw for valve with one solenoid
12	Name plate pilot control valve
13	Name plate main valve
14	Integrated electronics (OBE)
15	"D3” pressure reducing valve
16	Identical seal rings for ports A, B, P, and T
17	Identical seal rings for ports X and Y
18	Space required to remove the mating connector
19	Diversion plate
20	Machined valve contact surface; Porting pattern according to ISO 4401-10-09-0-05 (Ports X and Y as required) Deviating from the standard: ‒ Ports P, A, B and T Ø38 mm ‒ position G11) according DIN 24340 Form A
21	Locking pin

Recommended valve mounting screws (separate order):

6 hexagon socket head cap screws ISO 4762 - M20 x 80 - 10.9-flZn-240h-L

Tightening torque MA = 340 Nm ± 20 %, material no. R901035246 or

4 hexagon socket head cap screws ISO 4762 - M20 x 80 - 10.9

Tightening torque MA = 430 Nm ± 20 %

NG52

Dimensions in mm

1	Main valve
2	Pilot control valve
3	Dimension for version 4WRZ (not seawater-resistant)
4	Dimension for version 4WRZE
5	Proportional solenoid "a"
6	Proportional solenoid "b"
7	Mating connector "A", color gray, separate order
8	Mating connector "B", color black, separate order
9	Mating connector according to DIN EN 175201-804, separate order
10	Concealed manual override “N9”
11	Plug screw for valve with one solenoid
12	Name plate pilot control valve
13	Name plate main valve
14	Integrated electronics (OBE)
15	Space required to remove the mating connector
16	Adapter plate
17	"D3” pressure reducing valve
18	Diversion plate
19	Transport aid

Recommended valve mounting screws (separate order):

4 hexagon socket head cap screws ISO 4762 - M12 x 70 - 10.9-flZn-240h-L

Tightening torque MA = 100 Nm ± 20 %, material no. R913000515 or

4 hexagon socket head cap screws ISO 4762 - M12 x 70 - 10.9

Tightening torque MA = 130 Nm ± 20 %

Spare parts & repair

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Accessories for R900248811

PROPORTIONAL DIRECTIONAL VALVE 4WRZ10W6-25-7X/6EG24N9EK4/D3M

Manufacturer: Bosch Rexroth

Material #: R900248811

Model : 4WRZ10W6-25-7X/6EG24N9EK4/D3M

This product is eligible for factory repair.

Pilot-operated proportional directional valves type 4WRZ(E)… and 5WRZ(E).52…

Set-up:

Function:

Notice:

Notice:

general

hydraulic

electrical

(measured with HLP46, ϑÖl = 40 ±5 °C)

Rated flow 25 l/min at a valve pressure differential of 10 bar

Rated flow 50 l/min at a valve pressure differential of 10 bar

Rated flow 85 l/min at a valve pressure differential of 10 bar

Transition function with stepped electric input signals (ps = 50 bar)

Rated flow 100 l/min at a valve pressure differential of 10 bar

Rated flow 125 l/min at a valve pressure differential of 10 bar

Rated flow 150 l/min at a valve pressure differential of 10 bar

Rated flow 180 l/min at a valve pressure differential of 10 bar

Transition function with stepped electric input signals (ps = 50 bar)

Rated flow 220 l/min at a valve pressure differential of 10 bar

Rated flow 325 l/min at a valve pressure differential of 10 bar

Transition function with stepped electric input signals (ps = 50 bar)

Rated flow 360 l/min at a valve pressure differential of 10 bar

Rated flow 520 l/min at a valve pressure differential of 10 bar

Transition function with stepped electric input signals (ps = 50 bar)

Rated flow 1000 l/min at a valve pressure differential of 10 bar

Transition function with stepped electric input signals (ps = 50 bar)

Symbols

Pilot oil supply

Connection at mating connector

Connection at connector

Size 10

Recommended valve mounting screws (separate order):

Size 16

Recommended valve mounting screws (separate order):

NG25

Recommended valve mounting screws (separate order):

Size 32

Recommended valve mounting screws (separate order):

NG52

Recommended valve mounting screws (separate order):

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