3DREP6A-2X/25EG24N9K4/M-674

Manufacturer: Bosch Rexroth

Material #: R901224634

Model : 3DREP6A-2X/25EG24N9K4/M-674

***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 3DREP6A-2X/25EG24N9K4/M-674 (R901224634) is a direct operated proportional pressure reducing valve designed to convert an electric input signal into a proportional pressure output signal. This valve is characterized by its controllable wet-pin DC solenoids with central threads and detachable coils. It can be operated using either external control electronics type DREP or integrated control electronics type DREPE, providing flexibility in application. The setup of the valve includes a housing with a connection surface, a control spool with an integrated pressure measuring spool, and optionally integrated control electronics for streamlined operation. The functioning of the valve allows for setting the pressure in ports A or B through the proportional solenoids, which are responsive to current changes. In the absence of energized solenoids, the control spool remains in a central position due to compression springs, allowing hydraulic fluid to flow freely to the tank. When activated, one of the solenoids moves the pressure measuring spool and consequently the control spool, creating a connection from P to B and A to T through orifice-type cross-sections that feature progressive flow characteristics. The built-up pressure in channel B influences the control spool against solenoid force until it reaches the predetermined value based on solenoid current. This model also includes an optional hand override feature for manual operation without energizing solenoids; however, caution is advised as accidental use may result in uncontrolled machine movements. Additionally, this valve variant comes with two spool positions (either DREP..A.. or DREP..B..), where one side is fitted with a plug screw instead of a second proportional solenoid. For installation purposes, it's important to ensure that the tank line does not run empty; if necessary based on installation conditions, a preload valve with approximately 5 bar preload pressure should be installed. This Bosch Rexroth valve supports subplate mounting conforming to ISO standards and offers options for manual override. It has a maximum operating pressure of 315 bar and can handle maximum flow rates up to 25 liters per minute.

$1,675.00 USD

More are expected on June 2, 2025

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Status: This product is temporarily out of stock.

Qty: Delivered as early as June 2, 2025 when ordered in

This product is eligible for factory repair.

Repairs from $243.00

Direct operated proportional valve for controlling the pressure and direction of a flow Actuation by proportional solenoid with central thread and detachable coil For subplate mounting: Porting pattern according to ISO 4401 Manual override, optional Spring-centered control spool Type 3DREPE with integrated electronics (OBE) Type 3DREP with external electronics

The 3-way pressure reducing valve type 3 DREP 6.. is direct operated by proportional solenoids. It is intended for the conversion of an electric input signal into a proportional pressure output signal. The proportional solenoids are controllable, wet-pin DC solenoids with a central thread and a detachable coil. The solenoids are controlled optionally either by external control electronics (type 3DREP) or by the integrated control electronics (type 3DREPE).

Set-up:

The valve basically consists of:

Housing (1) with connection surface Control spool (2) with pressure measuring spool (3, 4) Solenoids (5, 6) with central thread optional integrated control electronics (7)

Function:

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 to the tank without obstructions. By energizing a proportional solenoid, e.g. solenoid "a" (5), the pressure measuring spool (3) and with it the control spool (2) are moved to the right. This opens the connection from P to B and A to T via orifice-type cross-sections with progressive flow characteristics. With the surface of the pressure measuring spool (4) the pressure that builds up in channel B acts on the control spool and against the solenoid force. The pressure measuring spool (4) is supported by solenoid "b". If the pressure exceeds the value set at solenoid "a", the control spool (2) is pushed back against the solenoid force and connects B with T until the set pressure is reached again. The

pressure is proportional to the solenoid current. When the solenoid is switched off, the control spool (2) is returned into the central position by the compression springs (8). An optional hand override (9, 10) allows control spool (2) to be moved without solenoid energization.

Notice:

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

Valve with two spool positions (type 3DREP..A.. or 3DREP..B..):

The function of this valve version basically corresponds to the valve with three spool positions. The 2 spool position valve is, however, only equipped with solenoid “a” (5) or solenoid “b” (6). Instead of the 2nd proportional solenoid, a plug screw (11) is installed.

Notice:

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.

01	02	03	04		05		06	07	08	09	10	11		12	13	14
3DREP		6		‒	2X	/		E	G24				/			*

01	Proportional pressure relief valve in 3-way version		3DREP
02	For external analog electronics		no code
	With integrated control electronics		E
03	Size 6		6
Version
04	Type 3DREP6 A 2X/..		A
	Type 3DREP6 B 2X/..		B
	Type 3DREP6 C 2X/..		C
05	Component series 20 ... 29 (20 ... 29: unchanged installation and connection dimensions) - Size 6		2X
Pressure rating
06	16 bar		16
	25 bar		25
	45 bar		45
07	Proportional solenoid with detachable coil		E
Power supply
08	Direct voltage 24 V		G24
09	Without manual override		no code
	With concealed manual override		N9 3)
10	Without special type of protection		no code
	Sea water-resistant		J 2)
Electrical connection
11	For type DREP:	Without mating connector; connector DIN EN 175301-803	K4 1)
	For type DREPE:	Without mating connector; connector DIN EN 175201-804	K311)
Electrical interface
12	For type DREP:		no code
	For type DREPE:	Command value/actual value ±10 V	A1
		Command value/actual value 4 … 20 mA	F1
Seal material
13	NBR seals		M
	FKM seals		V
14	Further details in the plain text		*
1)	For version "J" = seawater-resistant only indicate "K31"
2)	Only for version 3DREP6
3)	With version “J”, indicate “N” only instead of “N9”
Special electrical types of protection upon request

For applications outside these parameters, please consult us!

general

Type		3DREP	3DREPE
Size		6
Component series		2X
Installation position		any, preferably horizontal
Earth	kg	2	2.2
Storage temperature range	°C	-20 … +80
Ambient temperature range	°C	-20 … +70	-20 … +50

hydraulic

Type				3DREP	3DREPE
Maximum operating pressure			bar	100
Operating pressure range	Port P	Pressure rating 16 bar	bar	20 … 100
		Pressure rating 25 bar	bar	30 … 100
		Pressure rating 45 bar	bar	50 … 100
	Port T		bar	0 ... 30
Maximum flow 1)			l/min	15	15
Hydraulic fluid				see table	see table
Hydraulic fluid temperature range			°C	-20 … +80	-20 … +80
Viscosity range			mm²/s	20 … 380	20 … 380
	preferably		mm²/s	30 … 46	30 … 46
Maximum admissible degree of contamination of the hydraulic fluid, cleanliness class according to ISO 4406 (c) 2)				Class 17/15/12 according to ISO 4406 (c)	Class 17/15/12 according to ISO 4406 (c)
Hysteresis			%	≤ 5	≤ 5
Repetition accuracy			%	≤ 1	≤ 1
Response sensitivity			%	≤ 0.5	≤ 0.5
Range of inversion			%	≤ 1	≤ 1

1)	Δp = 50 bar
2)	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	NBR / FKM	DIN 51524
Flame-resistant - containing water	HFC	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, otherwise, increased cavitation erosion! Tank pre-loading < 1 bar or > 20% of the pressure differential Pressure peaks must not exceed the maximum operating pressures!

electrical

Type			3DREP	3DREPE
Voltage type			Direct voltage
Type of signal			analog
Maximum solenoid current		A	1.5	2.5
Solenoid coil resistance	Cold value at 20 °C	Ω	5.2	2.15
	Maximum hot value	Ω	7.6	3.3
Duty cycle		%	100
Coil temperature 1)		°C	150
Protection class according to DIN EN 60529			IP65 (with mating connector mounted and locked)

1)	Due to the surface temperatures of the solenoid coils, the standards ISO 13732-1 and EN 982 need to be adhered to!

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

Pressure rating 16, 25, and 45 bar

Flow-dependent pressure

Type 3DREP..6 A 2X/..E (detailed)

Type 3DREP..6 B 2X/..E (detailed)

Type 3DREP..6 C 2X/..E (detailed)

Example of valve with integrated control electronics; type 3DREPE..6 C 2X/..E (simplified)

Pin assignment	Contact	Assignment interface "A1"	Assignment interface "F1"
Power supply	A	24 VDC (u(t) = 19,4 ... 35 V); Imax = 2 A
	B	0 V
Reference potential actual value	C	cannot be used 1)
Differential amplifier input (command value)	D	±10 V command value; Re > 50 kΩ	4 ...20 mA command value; Re > 100 Ω
	E	Reference potential command value
Measuring output (actual value)	F	cannot be used 1)
	PE	connected to cooling element and valve housing
1)	Contacts C and F must not be connected!

Command value:

Reference potential at E and positive command value (or 12...20 mA) at D result in pressure in A.

Reference potential at E and negative command value (or 12...4 mA) at D result in pressure in B.

With valves with solenoid on side “b” (version A), reference potential at E and a positive command value at D (4...20 mA) result in pressure in A.

With valves with solenoid on side “a” (version B), reference potential at E and a positive command value at D (4...20 mA) result in pressure in B.

Connection cable:

Recommendation:

up to 25 m line length: Type LiYCY 5 x 0.75 mm2 up to 50 m line length: Type LiYCY 5 x 1.0 mm2 External diameter 6.5 to 11 mm Connect shield to PE on the supply side.

Block diagram / pin assignment

1	Valve housing
2	Name plate
3	Proportional solenoid "a"
4	Proportional solenoid "b"
5	Mating connector "A", color gray, separate order
6	Mating connector "B", color black, separate order
7	Identical seal rings for ports A, B, P, and T
8	Concealed manual override “N9”
9	Plug screw for valve with one solenoid
10	Space required to remove the mating connector
11	Machined valve contact surface; Porting pattern according to ISO 4401-03-02-0-05

1	Valve housing
2	Name plate
3	Proportional solenoid "a"
4	Proportional solenoid "b"
5	Mating connector according to DIN EN 175201-804, separate order
7	Identical seal rings for ports A, B, P, and T
8	Concealed manual override “N”
9	Plug screw for valve with one solenoid
10	Space required to remove the mating connector
11	Machined valve contact surface; Porting pattern according to ISO 4401-03-02-0-05
12	Dimension for version "N"

1	Valve housing
2	Name plate
3	Proportional solenoid "a"
4	Proportional solenoid "b"
5	Mating connector according to DIN EN 175201-804, separate order
7	Identical seal rings for ports A, B, P, and T
8.1	Concealed manual override “N9”
8.2	Manual override “N“ for seawater-resistant version "J"
9	Plug screw for valve with one solenoid
10	Space required to remove the mating connector
11	Machined valve contact surface; Porting pattern according to ISO 4401-03-02-0-05
12	Integrated electronics (OBE)
13	Dimension for seawater-resistant version "J"

Recommended valve mounting screws (separate order):

4 hexagon socket head cap screws ISO 4762 - M5 x 50 - 10.9

Tightening torque MA = 8.9 Nm ± 10%

Spare parts & repair

3DREP6A-2X/25EG24N9K4/M-674

Manufacturer: Bosch Rexroth

Material #: R901224634

Model : 3DREP6A-2X/25EG24N9K4/M-674

More are expected on June 2, 2025

This product is eligible for factory repair.

Set-up:

Function:

Notice:

Valve with two spool positions (type 3DREP..A.. or 3DREP..B..):

Notice:

Type 3DREP6 A 2X/..

Type 3DREP6 B 2X/..

Type 3DREP6 C 2X/..

general

hydraulic

electrical

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

Pressure rating 16, 25, and 45 bar

Pressure rating 16, 25, and 45 bar

Flow-dependent pressure

Type 3DREP..6 A 2X/..E (detailed)

Type 3DREP..6 B 2X/..E (detailed)

Type 3DREP..6 C 2X/..E (detailed)

Example of valve with integrated control electronics; type 3DREPE..6 C 2X/..E (simplified)

Command value:

Connection cable:

Block diagram / pin assignment

Recommended valve mounting screws (separate order):

Mating connectors for valves with connector “K4”, without circuitry, standard

3P Z4

Mating connectors for valves with connector “K4”, without circuitry, standard

3P Z4

Mating connectors for valves with round connector, 6-pole + PE

7P Z31

Mating connectors for valves with round connector, 6-pole + PE

7P Z31

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