Accessories for R901051881

PRESSURE REDUCING VALVE 3DREPE6A-2X/45EG24N9K31/A1M

Manufacturer: Bosch Rexroth

Material #: R901051881

Model : 3DREPE6A-2X/45EG24N9K31/A1M

***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 3DREPE6A-2X/45EG24N9K31/A1M (R901051881) is a direct operated proportional pressure reducing valve designed for industrial hydraulic applications. This high-performance valve ensures reliable pressure reduction to a set command value signal. It features a spool valve that is directly actuated, with an adjustable pressure range up to a specified bar limit. The valve includes both concealed manual override and auxiliary actuation for enhanced operational flexibility. Equipped with integrated electronics, the 3DREPE6A-2X/45EG24N9K31/A1M operates on a 24 V DC supply voltage, facilitating electrical actuation without the need for external control units. The electrical connection is made via a Connector pole PE according to DIN EN standards, ensuring secure and standardized connectivity. Designed for subplate mounting, it adheres to ISO porting patterns and can be integrated seamlessly into existing hydraulic systems. With its spool symbol P A A T, this valve offers maximum pressure capabilities and can handle a maximum flow rate as specified in its technical details. It features multiple ports for versatile connection options and supports various types of hydraulic fluids including HL, HLP, HLPD, HVLP, HVLPD, and HFC. The seals are made from NBR material to ensure durability and resistance against fluid leakage. The 3DREPE6A-2X/45EG24N9K31/A1M boasts two switching positions and comes with an NFPA T3.5.1 R2 D03 size CETOP 3 interface for easy installation and compatibility with standard setups. Its weight is carefully calibrated to maintain balance within the system it's installed in. This Bosch Rexroth proportional valve is suitable for applications requiring precise control of hydraulic pressure with the convenience of electrical actuation integrated into its design. Users benefit from its robust construction, reliable performance under varying conditions, and the ability to manually override settings when necessary – all essential features for sophisticated industrial hydraulic systems.

$2,962.00 USD

More are expected on May 16, 2025

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Status: This product is temporarily out of stock.

Qty: Delivered as early as May 16, 2025 when ordered in

This product is eligible for factory repair.

Repairs from $433.00

PRESSURE REDUCING VALVE 3DREPE6A-2X/45EG24N9K31/A1M

Size 6, P → A / A → T, electrical with integrated electronics, 24 V DC

Industrial hydraulic valve in a high performance range. Reliable reduction of the pressure to the command value signal.

Unpacked Weight: 1.731 kg

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.

Spool valve
Direct actuated
Pressure adjustment range up to 45 bar
With concealed manual override: With concealed auxiliary actuation
Operating pressure, max. 100 bar
Component series 2X
Size 6
Volume flow, max. 15 l/min

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

Spool symbol	P → A / A → T
Max. pressure	100
Electrical connection description	Connector 7-pole (6 + PE) according to EN 175201-804
Productgroup ID	9,10,11,12,13,14
Number of ports	4
Type of actuation	Electrical with integrated electronics
Size	6
Electrical connector	Connector 7-pole (6 + PE)
Max. flow	15
Type of connection	Subplate mounting
Connection diagram NFPA	NFPA T3.5.1 R2-2002 D03
Size_CETOP	D03
Connection diagram	ISO 4401-03-02-0-05
Supply voltage	24 VDC
Number of switching positions	2
Weight	1.731
Seals	NBR
Hydraulic fluid	HL,HLP,HLPD,HVLP,HVLPD,HFC

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

Accessories for R901051881

PRESSURE REDUCING VALVE 3DREPE6A-2X/45EG24N9K31/A1M

Manufacturer: Bosch Rexroth

Material #: R901051881

Model : 3DREPE6A-2X/45EG24N9K31/A1M

More are expected on May 16, 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):

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