M-3SED6CK1X/350CG24N9K4

4/2 directional seat valve

2/2 and 3/2 directional seat valve

General

The directional valve of the type M-.SED is a direct operated directional seat valve with solenoid actuation. It controls the start, stop and direction of flow and mainly consists of a housing (1), the solenoid (2), the valve seats (7) and (11) as well as of the closing element (4).

The manual override (6) allows for the switching of the valve without solenoid energization.

Basic principle (3/2 directional seat valve)

The initial position of the valve (normally open "UK" or normally closed "CK") is determined by the arrangement of the spring (5). The chamber (3) behind the closing element (4) is connected to port P and sealed against port T. Thus, the valve is pressure-compensated in relation to the actuating forces (solenoid and spring).

With the special closing element (4), ports P, A and T can be loaded with the maximum operating pressure (350 bar) and the flow can be directed into both directions (see symbols)!

In the initial position, the closing element (4) is pressed onto the seat (11) by the spring (5), in spool position, it is pressed onto the seat (7) by the solenoid (2). The flow is blocked.

With the 2/2 directional seat valve, the tank port is internally closed.

2/2 directional seat valve		3/3 directional seat valve
„PK“		„UK“
„NK“		„CK“

Type M-3SED 6 UK1X/350CG24N9K4 (top) / type M-3SED 6 CK1X/350CG24N9K4 (bottom)

4/2 directional seat valve

2/2 and 3/2 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 (5) holds the closing element (4) on the seat (11). Port P is blocked and A is connected to T. A control line is connected from A to the large area of the control spool (8), which is thus unloaded to the tank. The pressure applied via P now pushes the ball (9) onto the seat (10). Thus, P is connected to B and A is connected to T.

• Transition position:

Upon actuation of the main valve, the closing element (4) is shifted against the spring (5) and pressed onto the seat (7). During this, port T is blocked, while P, A, and B are briefly connected to each other.

• Switching position:

P is connected to A. Since the pump pressure acts via A on the large area of the control spool (8), the ball (9) is pressed onto the seat (12). Thus, B is connected to T, and P to A. The ball (9) in the Plus-1 plate has a “positive spool overlap”.

Attention!

In order to avoid pressure intensification when using differential cylinders, the annulus area of the cylinder must be connected at A.

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

Type M-4SED 6 Y1X/350CG24N9K4

Throttle insert

The use of a throttle insert is required if, due to prevailing operating conditions, flows which exceed the performance limit of the valve can occur during the switching processes.

Examples:

• Accumulator operation,

• use as pilot control valve with internal pilot fluid tapping.

2/2 and 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

Check valve insert

The check valve insert allows a free flow from P to A and closes A to P in a leak-free form.

2/2 and 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	Mineral oil					M
02	2 main ports					2
	3 main ports					3
	4 main ports					4
03	Seat valve					SED
04	Size 6					6
05	Main ports		2	3	4
	Symbols		●	–	–	PK
			●	–	–	NK
			–	●	–	UK
			–	●	–	CK
			–	–	●	D
			–	–	●	Y
	● = available
06	Component series 10 ... 19 (10 ... 19: unchanged installation and connection dimensions)					1X
07	Operating pressure up to 350 bar					350 bar
08	Solenoid, wet-pin, with detachable coil					C
09	Direct voltage 24 V					G24
	Nominal voltage 205 V at DC solenoid with operation with AC voltage mains (AC voltage mains 230 V – 50/60 Hz with an admissible voltage tolerance of +/- 10 %)					G2051)
	Nominal voltage 96 V at DC solenoid with operation with AC voltage mains (AC voltage mains 110 V/120 V - 50/60 Hz with an admissible voltage tolerance of +/- 10 %)					G96
	Further ordering codes for other voltages are provided in the technical data
10	With concealed manual override					N9
	Without manual override					no code
Electrical connection
11	Individual connection
	without mating connector, individual connection with connector according to DIN EN 175301-803					K4 2)
	With M12x1 plug-in connection, high-performance version 5-pole, integrated interference protection circuit, operating display with LED					K72L3)
Spool position monitoring
12	Without position switch					no code
	Monitored spool position "a"					QMAG24
	Monitored spool position "b"					QMBG24
13	Without check valve insert, without throttle insert					no code
	With check valve insert					P
	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
14	NBR seals					no code
	FKM seals (other seals upon request)					V
	Observe compatibility of seals with hydraulic fluid used.
15	Without locating hole					no code
	With locating hole and locking pin ISO 8752-3x8-St					/62
16	Further details in the plain text					*

	1) For the connection to the AC voltage mains, a DC solenoid must be used, which is controlled via a rectifier (see AC voltage mains table).
	A mating connector with integrated rectifier can be used (separate order).
	2) Mating connectors, separate order.
	3) Version “G24” only, see data sheet 12345

Preferred types and standard units are contained in the EPS (standard price list).

The electric connection is realized via a 4-pole mating connector (separate order) with connection thread M12 x 1.

electrical

Connection voltage (DC voltage)			V	24
Voltage tolerance (connection voltage)				+30 %/-15 %
Admissible residual ripple			%	≤ 10
Max. load capacity			mA	400
Switching outputs				PNP transistor outputs, load between switching outputs and GND
Pinout	1		V	24
	2, 4	Switching output	mA	400
	3	Earthing (GND)	V	0

M12x1 plug-in connection

In the electrical connection, the protective earthing conductor (PE, grounded) is to be connected in accordance with the stipulations.

(For applications outside these values, please consult us!)

2/2 directional seat valve (“PK”) and 3/2 directional seat valve (“UK”)

Dimensions in mm

2/2 directional seat valve (“PK”) and 3/2 directional seat valve (“UK”)

Dimensions in mm

1)	1) Depth of fit

2/2 directional seat valve (“NK”) and 3/2 directional seat valve (“CK”)

Dimensions in mm

1)	1) Depth of fit

2/2 directional seat valve (“NK”) and 3/2 directional seat valve (“CK”)

Dimensions in mm

4/2 directional seat valve (“D”)

Dimensions in mm

4/2 directional seat valve (“D”)

Dimensions in mm

4/2 directional seat valve (“Y”)

Dimensions in mm

4/2 directional seat valve (“Y”)

Dimensions in mm

2/2 and 3/2 directional seat valve

4 hexagon socket head cap screws, metric

ISO 4762 - M5 x 50 - 10.9-flZn-240h-L (separate order)

(friction coefficient μtotal = 0.09 to 0.14);

tightening torque MA = 7 Nm ± 10 %,

material no. R913000064

or

4 hexagon socket head cap screws

ISO 4762 - M5 x 50 - 10.9 (self procurement)

(friction coefficient μtotal = 0.12 to 0.17);

tightening torque MA = 8,1 Nm ± 10 %

4 hexagon socket head cap screws UNC

10-24 UNC x 2″ (self procurement)

(friction coefficient μtotal = 0.19 to 0.24 according to ASTM-574);

tightening torque MA = 11 Nm ± 15 %,

(friction coefficient μtotal = 0.12 to 0.17 according to ISO 4762);

tightening torque MA = 8 Nm ± 10 %,

material no. R978833365

4/2 directional seat valve

4 hexagon socket head cap screws metric

ISO 4762 - M5 x 95 - 10.9-flZn-240h-L (included in the scope of delivery)

(friction coefficient μtotal = 0.09 to 0.14);

tightening torque MA = 7 Nm ± 10 %,

material no. R913000223

or

4 hexagon socket head cap screws

ISO 4762 - M5 x 95 - 10.9 (self procurement)

(friction coefficient μtotal = 0.12 to 0.17);

tightening torque MA = 8.1 Nm ± 10 %

4 hexagon socket head cap screws UNC

10-24 UNC x 3 3/4″ (self procurement)

(friction coefficient μtotal = 0.19 to 0.24 according to ASTM-574);

tightening torque MA = 11 Nm ± 15 %,

(friction coefficient μtotal = 0.12 to 0.17 according to ISO 4762);

tightening torque MA = 8 Nm ± 10 %,

material no. R978881682

Spool position monitoring

Dimensions in mm

1)	only NG150

Inductive position switch type QM

Dimensions in mm

1)	For dimensions, see valve dimensions

Notice:

The dimensions are nominal dimensions which are subject to tolerances.

M12x1 plug-in connection

Dimensions in mm

M-.SED 6 .-1X/350CG24.K72L…

Dimensions in mm