3/2 and 4/2 directional seat valves with solenoid actuation, for water W-.SE6

Description

• Size 6
• Component series 7X
• Maximum operating pressure 630 bar
• Maximum flow 25 l/min

Features

• Direct operated directional seat valve with solenoid actuation
• Porting pattern according to ISO 4401-03-02-0-05 (with locating hole)
• Air-gap DC solenoid
• Electrical connection as individual connection
• Blocked port is leak-free closed
• Safe switching also with longer standstill periods under pressure

Product description

3/2–Wege–Sitzventil

General

The directional valve of the W.-SE type is a directional seat valve with solenoid actuation. It controls the start, stop and direction of flow. It mainly comprises a housing (1), the solenoid (2), the hardened valve system (3) as well as the ball (4) as closing element.

Basic principle

In the initial position, the ball (4) is pressed onto the seat by the spring (8) and by the solenoid (2) in switching position. The force of the solenoid (2) acts via the angled lever (5) and the ball (6) on the actuating plunger (7), which is sealed. The chamber between the two sealing elements is connected to port P. Therefore, the valve system (3) is pressure-compensated in relation to the actuating forces (solenoid or return spring). Therefore, the valves can be used up to 630 bar.

Notice!

• 3/2-directional seat valves feature "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. However, this process takes place within such a short time that it is irrelevant in nearly all cases of use.

• The manual override allows for the switching of the valve without solenoid energization.

Attention!

It is to be ensured that the maximum flow indicated is not exceeded! If applicable, a throttle insert for flow limitation is to be inserted (see functional description).

The seat arrangement offers the following options:

Symbol	„U“
Initial position	P and A connected, T blocked
Switching positions	P blocked, A and T connected
Symbol	„C“
Initial position	P blocked, A and T connected
Switching positions	P and A connected, T blocked

Type .-3SE 6 U …

3/2 directional seat valve – with detent

In principle, the function of this valve corresponds to the version without detent.

The detent enables the valve to stay in the switched position even if no solenoid is energized. This allows the valve to independently stay in both switching positions.

Detent function:

The solenoid (2) switches the valve into the switching position, which is latched automatically. The switching solenoid can be switched off once the switching process has been completed.

In order to leave the latched position, the solenoid (9) must be switched for a minimum of 100 ms. With the installed spring (16), the valve is returned to its basic position.

The seat arrangement offers the following options:

Symbol	„U“
Initial position	P and A connected, T blocked
Switching positions	P blocked, A and T connected
Symbol	„C“
Initial position	P blocked, A and T connected
Switching positions	P and A connected, T blocked

Type .-3SE 6 U./F…

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 (8) holds the ball (4.2) 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:

When the main valve is actuated, the ball (4.1) is shifted against the spring (8) 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 (10). Thus, B is connected to T, and P to A. The ball (13) 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.

4/2 directional seat valves with detent, analog to the 3/2 directional seat valve.

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

	Without detent	With detent
Symbol “D”
Symbol “Y”

Type .-4SE 6 Y …

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.

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.

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.

Type code

01	Water				W
02	3 main ports				3
	4 main ports				4
03	Seat valve, electrically operated				SE
04	Size 6				6
05	Main ports		3	4
	Symbols		●	–	U
			●	–	C
			–	●	D
			–	●	Y
			● = available
06	Component series 70 … 79 (70 … 79: unchanged installation and connection dimensions)				7X
07	With spring return				no code
	With detent				F
08	Operating pressure 420 bar				420 bar
	Operating pressure up to 630 bar				630 bar
09	Direct voltage 24 V				G24
	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 2)
	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	without mating connector, individual connection with connector according to DIN EN 175301-803				K4 1)
12	Without check valve insert, without throttle insert				no code
	With check valve insert				P
	Throttle Ø 0.8 mm				B08
	Throttle Ø 0.8 mm				B10
	Throttle Ø 1.2 mm				B12
	Throttle Ø 1.5 mm				B15
	Throttle Ø 1.8 mm				B18
	Throttle Ø 2.0 mm				B20
Seal material
13	NBR seals				no code
	FKM seals (other seals upon request)				V
	Observe compatibility of seals with hydraulic fluid used.
14	Without locating hole				no code
	With locating hole and locking pin ISO 8752-3x8-St				/62
15	Further details in the plain text				*

Technical data

general

hydraulic

electrical

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!)

Diagrams/characteristic curves

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

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

Symbols/Circuit diagrams

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

	Symbol		Comment
3-way circuit	U		Pressure pP ≥ pA ≥ pT
	C
2-way circuit (as unloading function only)	U		Before switching from the initial position to the switching position, pressure must be applied to port A. pA≥pT
	C		Pressure pA ≥ pT
4-way circuit (flow only possible in the direction of arrow)	D		Valve (symbol “U”) in connection with Plus-1 plate pP >pA ≥ pB >pT
	Y		Valve (symbol “C”) in connection with Plus-1 platepP >pA ≥ pB > pT

Attention! Please observe the “General notices”!

Dimensions

3/2 directional seat valve

Dimensions in mm

3/2 directional seat valve – with detent

Dimensions in mm

4/2 directional seat valve

Dimensions in mm

4/2 directional seat valve – with detent

Dimensions in mm

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 arbitrarily exchanged or closed! The flow is only admissible in the direction of arrow.

• When using the Plus-1 plate (4/2 directional function), the following lower operating values are to be observed:

pmin = 8 bar; qV > 3 l/min.

• The total flow of the valve must not be exceeded.

Accessories

Mating connectors for valves with connector “K4”, with indicator light

3P Z5L

Mating connectors for valves with connector “K4”, with indicator light

3P Z5L

• For valves with connector “K4” according to EN 175301-803 and ISO 4400, 2-pole + PE, “large cubic connector”
• Mating connectors for valves with one or two solenoids (individual connection)

• Data sheet

• Spare parts and repair

Mating connectors for valves with connector “K4”, with indicator light and Zener diode suppression circuit

3P Z5L1

Mating connectors for valves with connector “K4”, with indicator light and Zener diode suppression circuit

3P Z5L1

• For valves with connector “K4” according to EN 175301-803 and ISO 4400, 2-pole + PE, “large cubic connector”
• Mating connectors for valves with one or two solenoids (individual connection)

• Data sheet

• Spare parts and repair

Mating connectors for valves with connector “K4”, with rectifier

3P RZ5

Mating connectors for valves with connector “K4”, with rectifier

3P RZ5

• For valves with connector “K4” according to EN 175301-803 and ISO 4400, 2-pole + PE, “large cubic connector”
• Mating connectors for valves with one or two solenoids (individual connection)

• Data sheet

• Spare parts and repair

Ordering codes

Downloads

	Hydraulic valves and hydroelectric pressure switches for industrial applications Manual | RE07600-B | 2021-06-21 | English | PDF | 306k Product Groups: Industrial Hydraulics On/off, proportional, high-response and servo valves, pressure switches
	3/2 and 4/2 directional poppet valve, with solenoid operation, for water emulsions and water Data Sheet | RE22042 | 2007-03-01 | English | PDF | 335k Product Groups: Direct operated