Core Specifications

• Part Number: R900566293

• Model: M‑4SEW6D38/420MG24N9K4

• Type: 4/2‑way directional seat valve (poppet design)

• Size: Nominal size 6 (CETOP 3)

• Max Operating Pressure: 420 bar (6,100 psi)

• Max Flow Rate: Up to 25 L/min

• Solenoid: 24 VDC, air‑gap type with detachable coil

• Mounting: Subplate mounting, conforming to DIN 24340 Form A and ISO 4401‑03‑02‑0‑05

• Seal Material: NBR (compatible with HL, HLP, HVLP hydraulic fluids)

Key Design & Functional Features

1. Zero‑Leak SealingPoppet‑type construction with hardened valve seats provides  bubble‑tight shutoff, eliminating internal leakage and ensuring stable load holding in hydraulic circuits.
2. Pressure‑Compensated OperationThe valve’s internal design balances hydraulic forces across the poppet, enabling reliable switching at full system pressure (up to 420 bar) without performance degradation.
3. Detachable & Rotatable Solenoid Coil

• The coil can be replaced without opening the pressure chamber, reducing system downtime during electrical maintenance.

• Coil rotates 90° for flexible cable routing in compact installations.

1. Manual OverrideEquipped with a  concealed manual override for emergency or setup operation without solenoid power.
2. Electrical & Monitoring Options

• Individual electrical connection with PE terminal (EN standard).

• Optional inductive position switches/proximity sensors for contactless valve status monitoring.

Operating Principle

Typical Applications

• Machine tool hydraulic clamping systems

• Presses and forming machines

• Industrial lifting and holding circuits

• Accumulator charging/discharging systems

• Mobile hydraulic equipment requiring high‑pressure, leak‑tight control

Advantages

• High pressure capability (420 bar) for heavy‑duty systems

• Zero internal leakage for precise load control

• Low maintenance (no sliding spool wear)

• Fast, reliable switching even after long periods under pressure

• Easy installation and serviceability

01	Mineral oil				M
02	2 main ports				2
	3 main ports				3
	4 main ports				4
03	Seat valve, direct operated				SEW
04	Size 6				6
05	Symbols	Main ports			● = available
		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 bar
	Operating pressure 630 bar				630 bar
08	High-power solenoid (air-gap) with detachable coil				M
09	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
	Nominal voltage 110 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 %)				G110
	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 %)				G205
	Connection to the AC voltage mains via control with rectifier. Further ordering codes for other voltages are provided in the Technical data
10	With concealed manual override (standard)				N9
	Without manual override				no code
Electrical connection
11	Individual connection
	Without mating connector; connector DIN EN 175301-803				K41)
Spool position monitoring
12	Without position switch				no code
	Inductive position switch type QM
	Monitored spool position "a"				QMAG242)
	Monitored spool position "b"				QMBG252)
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
	Other orifices on request
Seal material
14	NBR seals				no code
	FKM seals				V
	Observe compatibility of seals with hydraulic fluid used. (Other seals upon request)
15	Without loSAARing hole				no code
	With loSAARing hole and locking pin ISO 8752-3x8-St				/62
16	Further details in the plain text				*

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