M-3SEW6C3X/420MG24N9XEZ2/B08V

Manufacturer: Bosch Rexroth

Material #: R901028327

Model : M-3SEW6C3X/420MG24N9XEZ2/B08V

***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 M-3SEW6C3X/420MG24N9XEZ2/B08V (R901028327) is a high-performance directional seat valve designed for precise control of start, stop, and direction of flow in hydraulic systems. This direct operated valve features solenoid actuation and is constructed with a robust housing, a durable solenoid, a hardened valve system, and a precision control spool. Its design ensures that the valve system is pressure-compensated for reliable operation even under varying load conditions. The M-3SEW6C3X/420MG24N9XEZ2/B08V valve offers multiple configurations for its seat arrangement, providing flexibility to match specific application requirements. It comes with manual override functionality that facilitates manual switching in the absence of solenoid energization. Users should be aware of the negative spool overlap characteristic of this model; during switching processes, ports P, A, and T are momentarily connected. For applications requiring flow limitation, throttle inserts can be utilized to prevent exceeding the maximum flow specifications. Additionally, check valve inserts are available for scenarios where free flow from port P to A is necessary while blocking reverse flow from A to P. This Bosch Rexroth directional seat valve is suitable for use in potentially explosive atmospheres and adheres to ISO porting patterns. It offers safe switching capabilities even after extended periods under pressure. The solenoid coil can be rotated by 90 degrees to accommodate various mounting orientations. Electrical connections are made via an individual connection with cable gland. An optional concealed manual override feature adds an extra layer of operational flexibility. The M-3SEW6C3X/420MG24N9XEZ2/B08V provides reliable performance in hydraulic systems requiring precise control over fluid direction and flow rates. With its robust construction and versatile design options, it meets the needs of demanding industrial applications while ensuring safety in sensitive environments.

$3,809.00 USD

Availability: 8 In Stock

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Qty: Delivered as early as May 16, 2024 when ordered in

This product is eligible for factory repair.

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2/2-, 3/2- or 4/2-way version For intended use in potentially explosive atmosphere Porting pattern according to ISO 4401-03-02-0-05 (but without locating hole) Safe switching also with longer standstill periods under pressure Air-gap DC and AC solenoids Solenoid coil is rotatable by 90° Electrical connection with individual connection and cable gland With concealed manual override, optional

2/2 and 3/2 directional seat valve

General

Directional valves of the type SEW are direct operated directional seat valves with solenoid actuation. It controls the start, stop and direction of flow.

The directional valves basically comprise a housing (1), the solenoid (2), the hardened valve system (3) and the control spool (8).

Basic principle

In the initial position, the control spool (8) is pressed onto the seat by the spring (9) and in spool position by the solenoid (2). The force of the solenoid (2) acts via the angled lever (6) and the ball (7) on the control spool (8)

that is sealed on two sides. The chamber between the two sealing elements is connected to port P. Thus, the valve system (3) is pressure-compensated in relation to the actuating forces (solenoid or return spring).

Notices:

The 3/2 directional seat valves have a "negative spool overlap". Therefore, port T must always be connected. That means that during the switching process – from the starting of the opening of one valve seat to the closing of the other valve seat – ports P–A–T are connected with each other. This process takes, however, place within such a short time that it is irrelevant in nearly all applications. The manual override (10) allows for the switching of the valve without solenoid energization. Make sure that the specified maximum flow is not exceeded. A throttle insert must be used for flow limitation, if necessary (see table "Throttle insert, check valve insert").

The seat arrangement offers the following options:
	2/2 directional seat valve	3/2 directional seat valve
Symbol	P	U
Initial position	P and T connected	P and A connected, T blocked
Spool position	P blocked	P blocked, A and T connected
Symbol	N	C
Initial position	P blocked	P blocked, A and T connected
Spool position	P and T connected	P and A connected, T blocked

Type M-2SEW 6 N...XE...	Type M-3SEW 6 U...N9XE...

Type M-3SEW 6 U...N9XE...

4/2 directional seat valve

With a sandwich plate, the Plus-1 plate, under the 3/2 directional seat valve, the function of a 4/2 directional seat valve is achieved.

Function of the Plus-1 plate:

Initial position:The main valve is not operated. The spring (9) holds the ball (4) on the seat (11). Port P is blocked and A is connected to T. Apart from that, one control line is connected from A to the large area of the control spool (12), which is thus unloaded to the tank. The pressure applied via P now pushes the ball (13) onto the seat (14). Now, P is connected to B, and A to T. Transition position:Upon actuation of the main valve, the control spool (8) is shifted against the spring (9) and pressed onto the seat (15). During this, port T is blocked, while P, A, and B are briefly connected to each other. Switching position:P is connected to A. As the pump pressure acts via A on the large area of the control spool (12), the ball (13) is pressed onto the seat (16). Thus, B is connected to T, and P to A. The ball (13) in the Plus-1 plate has a "positive spool overlap".

Notice:

If the annulus area of differential cylinders is not connected to port A, a pressure peak is created in port B during the switching process. This pressure peak may exceed the maximum admissible operating pressure over the permissible limit.

The use of the Plus-1 plate and the seat arrangement offer the following options:
Symbol	D	Y

Type M-4SEW 6 Y...N9XE...

Schematic illustration: Initial position	Type M-4SEW 6 Y...N9XE...

1)	3/2 directional seat valve
2)	Plus-1 plate

Throttle insert, check valve insert

Throttle insert	Check valve insert
The use of a throttle insert is required if, due to the operating conditions given, flows may arise during the switching processes which exceed the performance limit of the valve. Examples: Accumulator operation, use as pilot control valve with internal pilot fluid tapping. 3/2 directional seat valve The throttle insert is inserted into port P of the seat valve. 4/2 directional seat valve The throttle insert is inserted into port P of the Plus-1 plate.	The check valve insert allows a free flow from P to A and closes A to P. 3/2 directional seat valve The check valve insert is inserted into port P of the seat valve. 4/2 directional seat valve The check valve insert is inserted into port P of the Plus-1 plate.

01		02	03	04	05	06		07	08	09	10	11	12		13	14
M	–		SEW	6		3X	/	420	M			XE	Z2	/

01	Mineral oil				M
02	2 main ports				2
	3 main ports				3
	4 main ports				4
03	Seat valve				SEW
04	Size 6				6
Symbols
05	Main ports	2	3	4
		✔	–	–	P
		✔	–	–	N
		–	✔	–	U
		–	✔	–	C
		–	–	✔	D
		–	–	✔	Y
06	Component series 30 ... 39 (30 ... 39: unchanged installation and connection dimensions)				3X
07	Operating pressure 420 bar				420
08	Solenoid (air-gap)				M
09	Direct voltage 24 V				G24
	Alternating voltage 230 V, 50/60 Hz				W230 R
	For further ordering codes for other voltages and frequencies, see chapter "Technical data"
10	With concealed manual override				N9
	Without manual override				no code
Explosion protection
11	"Increased safety", for details see chapter "Technical data" - Table "Information on the explosion protection"				XE
Electrical connection
12	Solenoid with terminal box and cable gland, for details see chapter "Electrical connection"				Z2
13	Without check valve insert, without throttle insert				no code
	With check valve insert				P
	Throttle Ø 0.8 mm				B08
	Throttle Ø 1.2 mm				B12
	Throttle Ø 1.5 mm				B15
	Throttle Ø 1.8 mm				B18
	Throttle Ø 2.0 mm				B20
	Throttle Ø 2.2 mm				B22
Seal material
14	NBR seals				no code
	FKM seals				V
	Observe compatibility of seals with hydraulic fluid used. (Other seals upon request)
Notice: Representation of the symbols according to DIN ISO 1219-1.

For applications outside these parameters, please consult us!

Hydraulic fluid		Classification	Suitable sealing materials	Standards	Data sheet
Mineral oils		HL, HLP, HLPD	NBR, FKM	DIN 51524	90220
Bio-degradable	Insoluble in water	HETG	FKM	ISO 15380	90221
	Insoluble in water	HEES	FKM	ISO 15380
	Soluble in water	HEPG	FKM	ISO 15380
Flame-resistant	Containing water	HFC (Fuchs Hydrotherm 46M, Petrofer Ultra Safe 620 )	NBR	ISO 12922	90223
Important information on hydraulic fluids: For further information and data on the use of other hydraulic fluids, please refer to the data sheets above or contact us. There may be limitations regarding the technical valve data (temperature, pressure range, life cycle, maintenance intervals, etc.). Ignition temperature >180 °C. Flame-resistant – containing water: Maximum operating pressure 210 bar Pressure differential <15 bar Pressure pre-loading at the tank port >20% of the pressure differential, otherwise increased cavitation erosion Life cycle as compared to operation with mineral oil HL, HLP 50 … 100% Maximum hydraulic fluid temperature 60 °C

electrical

Voltage type		Direct voltage	AC voltage
Available voltages	V	24 / 48 / 96 / 110	110 / 230
Voltage tolerance (nominal voltage)	%	- 5 + 10
Admissible residual ripple	%	< 5	-
Duty cycle/operating mode according to VDE 0580		S1 (continuous operation)
Switching time according to ISO 6403		see table
Maximum switching frequency	1/h	15000	7200
Nominal power with ambient temperature 20 °C	W	17
Maximum power with 1.1 x nominal voltage and an ambient temperature of 20 °C	W	20.6
Protection class according to DIN EN 60529 1)		IP66

1)	With correctly installed electrical connection

Special application conditions for a safe application

Maximum ambient temperature:
In case of bank assembly, as long as only one solenoid is energized at a time, and in case of individual assembly: +70 °C
In case of bank assembly when more than one solenoid is energized at a time: +60 °C The maximum temperature of the surface of the valve jacket is 120 °C. This has to be considered when selecting the connection cable and/or contact of the connection cable with the surface of the jacket is to be prevented.

Switching times t in ms (installation position: solenoid horizontal)

Pressure p	Flow qV	DC solenoid						AC solenoid
		tON without tank pressure				tOFF		tON without tank pressure				tOFF
		U	C	D	Y	C, U	D, Y	U	C	D	Y	U	C	D	Y
70 bar	25 l/min	30	40	30	40	15	15	25	40	25	40	45	65	45	65
140 bar	25 l/min	30	50	30	50	15	15	25	40	25	40	65	65	65	65
280 bar	25 l/min	35	60	35	60	15	15	25	45	25	45	75	65	75	65
320 bar	25 l/min	40	70	40	70	15	15	25	45	25	45	80	65	80	65
420 bar	25 l/min	45	70	45	70	15	15	30	45	30	45	100	65	100	65
Notice: The switching times were determined at a hydraulic fluid temperature of 40 °C and 46 mm2/s. Deviating hydraulic fluid temperatures can result in different switching times. Switching times change dependent on operating time and application conditions.

Performance limit: (measured with HLP46, ϑoil = 40 ±5 °C)

	Symbol	Comment	Operating pressure in bar				Flow in l/min
	Symbol	Comment	P	A	B	T	Flow in l/min
2-way circuit	P	Pressure at P ≥ T	420	‒	‒	100	25
2-way circuit	N	Pressure at P ≥ T	420	‒	‒	100	25
3-way circuit	U	Pressure at P ≥ A ≥ T	420	420	‒	100	25
3-way circuit	C	Pressure at P ≥ A ≥ T	420	420	‒	100	25
2-way circuit (as unloading function only)	U	Before switching from the initial position to the spool position, pressure must be applied to port A. Pressure at A ≥ T	‒	420	‒	100	25
2-way circuit (as unloading function only)	C	Pressure at A ≥ T	‒	420	‒	100	25
4-way circuit (flow only possible in the direction of arrow!)	D	Valve (symbol U) in connection with Plus-1 plate P > A ≥ B > T	420	420	420	100	25
	Y	Valve (symbol C) in connection with Plus-1 plate P > A ≥ B > T	420	420	420	100	25
Notice: Please observe the general notes (see chapter "Information"). The performance limits were determined when the solenoids were at operating temperature, at 10 % undervoltage and without tank preloading.

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

Δp-qV characteristic curves ‒ 2/2 directional seat valve

Δp-qV characteristic curves ‒ 3/2 directional seat valve

Δp-qV characteristic curves ‒ 4/2 directional seat valve

Δp-qV characteristic curves ‒ Check valve insert

Δp-qV characteristic curves ‒ throttle insert

The type-examination tested valve solenoid of the valve is equipped with a terminal box and a type-tested cable gland.

The connection is polarity-independent.

Solenoids to be connected to AC voltage are equipped with an integrated rectifier.

Notice

When establishing the electrical connection, the protective grounding conductor (PE) has to be connected properly.

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

Direct voltage, polarity-independent	AC voltage

Over-current fuse and switch-off voltage peak

Voltage data in the valve type code	Nominal voltage valve solenoid	Rated current valve solenoid	Rated current for external miniature fuse: Medium time-lag (M) according to DIN 41571 and EN/IEC 60127	Rated voltage of external miniature fuse: Medium time-lag (M) according to DIN 41571 and EN/IEC 60127	Maximum voltage value when switching off	Interference protection circuit
G24	24 V DC	0.708 A DC	800 mA	250 V	–90 V	Suppressor diode bi-directional
G48	48 V DC	0.354 A DC	400 mA	250 V	–200 V
G96	96 V DC	0.177 A DC	200 mA	250 V	–370 V
G110	110 V DC	0.155 A DC	200 mA	250 V	–390 V
W110R	110 V AC	0.163 A AC	200 mA	250 V	–3 V	Bridge rectifier and suppressor diode
W230R	230 V AC	0.078 A AC	80 mA	250 V	–3 V	Bridge rectifier and suppressor diode

Notice:

A fuse which corresponds to the rated current according to DIN 41571 and EN / IEC 60127 has to be connected upstream of every valve solenoid (max. 3 x Irated).

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 atmosphere 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.

2/2 and 3/2 directional seat valve

Dimensions in mm


Required surface quality of the valve contact surface

1	Solenoid coil
2	Concealed manual override “N9”
3	Mounting nut with hexagon SW32
4	Terminal box
5	Identical seal rings for ports A, B, and T; seal ring for port P
6	Name plate
7	Valve mounting screws (included within the scope of delivery) For reasons of stability, exclusively use the following valve mounting screws: 4 hexagon socket head cap screws ISO 4762-M5 x 45-10.9-flZn-240h-L (friction coefficient μtotal = 0.09 … 0.14)
8	Notice With 3/2 directional seat valves, port B is designed as blind counterbore. With 2/2 directional seat valves, ports A and B are designed as blind counterbores.
9	Porting pattern according to ISO 4401-03-02-0-05 (but without locating hole)
10	Space required to remove the solenoid coil

Subplates (separate order) with porting pattern according to ISO 4401-03-02-0-05, see data sheet 45100.

Notice:

Subplates are no components in the sense of directive 2014/34/EU and can be used after the manufacturer of the overall system has conducted an assessment of the risk of ignition.

The "G...J3" versions are free from aluminum and/or magnesium and galvanized.

4/2 directional seat valve

Dimensions in mm


Required surface quality of the valve contact surface

1	Solenoid coil
2	Concealed manual override “N9”
3	Mounting nut with hexagon SW32
4	Terminal box
5	Identical seal rings for ports A, B, and T; seal ring for port P
6	Name plate
7	Valve mounting screws (included in the scope of delivery) For reasons of stability, exclusively use the following valve mounting screws: 4 hexagon socket head cap screwsISO 4762 - M5x45-10.9-flZn-240h-L (friction coefficient μtotal = 0.09 … 0.14)
8	Plus-1 plate
9	Porting pattern according to ISO 4401-03-02-0-05 (but without locating hole)
10	Space required to remove the solenoid coil

Subplates (separate order) with porting pattern according to ISO 4401-03-02-0-05, see data sheet 45100.

Notice:

Subplates are no components in the sense of directive 2014/34/EU and can be used after the manufacturer of the overall system has conducted an assessment of the risk of ignition.

The "G...J3" versions are free from aluminum and/or magnesium and galvanized.

Installation conditions (dimensions in mm)

	Individual assembly	Bank assembly
Subplate dimensions	Minimum dimensions: Length ≥ 64, width ≥ 58, height ≥ 25	Minimum cross-section: Height ≥ 60, width ≥ 85
Thermal conductivity of the subplate (EN-GJS-500-7)	≥ 38 W/mK
Minimum distance between the longitudinal valve axes	≥ 55

Schematic diagram

Dimensions in mm

Notice:

Observe the “Special application conditions for a safe application” in chapter "Technical data".

General information

In order to switch the valve safely or maintain its spool position, the pressure situation must be as follows: P ≥ A ≥ T (for design reasons). The ports P, A and T (3/2 directional seat valve) as well as P, A, B and T (4/2 directional seat valve) are clearly determined according to their tasks. They must not be exchanged or closed. The flow is only permitted in the direction of arrow. If the Plus-1 plate (4/2 directional function) is used, the following lower operating values are to be observed: pmin = 8 bar; qV > 3 l/min. The specified maximum flow must not be exceeded (use a throttle insert for flow limitation, if necessary).

M-3SEW6C3X/420MG24N9XEZ2/B08V

Manufacturer: Bosch Rexroth

Material #: R901028327

Model : M-3SEW6C3X/420MG24N9XEZ2/B08V

Availability: 8 In Stock

This product is eligible for factory repair.

2/2 and 3/2 directional seat valve

Type M-2SEW 6 N...XE...

Type M-3SEW 6 U...N9XE...

Type M-3SEW 6 U...N9XE...

4/2 directional seat valve

Type M-4SEW 6 Y...N9XE...

Schematic illustration: Initial position

Type M-4SEW 6 Y...N9XE...

Throttle insert, check valve insert

electrical

Switching times t in ms (installation position: solenoid horizontal)

Performance limit: (measured with HLP46, ϑoil = 40 ±5 °C)

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

Δp-qV characteristic curves ‒ 2/2 directional seat valve

Δp-qV characteristic curves ‒ 3/2 directional seat valve

Δp-qV characteristic curves ‒ 4/2 directional seat valve

Δp-qV characteristic curves ‒ Check valve insert

Δp-qV characteristic curves ‒ throttle insert

Properties of the connection terminals and mounting elements

Over-current fuse and switch-off voltage peak

2/2 and 3/2 directional seat valve

4/2 directional seat valve

Installation conditions (dimensions in mm)

Schematic diagram

General information

Subplates

Subplates

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Information

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