Directional Solenoid Hydraulic Control Valve With Wet Pin AC Or DC WE 10 L5X

Product Specification

 4/3, 4/2 and 3/2 directional valve with wet-pin AC or DC solenoid

Type WE 10...L5X
Features:
– Direct operated directional spool valve with solenoid operation
– Porting pattern according to DIN 24 340 Form A, ISO 4401, and CETOP-RP121H
– Wet-pin DC solenoids with detachable coil(AC voltages possible via a rectifier)
– Solenoid coil can be rotated through 90°
– The coil can be replaced without opening the pressure-tight chamber
– Adjustable spool switching time, optional
 
Function and configuration
WE10-L5X directional valves are solenoid operated directional spool valves. They control the start, stop and direction of flow with the additional option of adjusting the spool switching time.
These directional valves basically consist of the housing (1), one or two solenoids (2), the control spool (3), as well as one or two return springs (4).
In de-energized condition, the control spool (3) is held in the central position or in the initial position by the return springs (4) (except for valves without spring "O").
If the wet-pin electronic solenoid (2) is energized, the control spool (3) moves out of its rest position into the required end position. In this way, the required direction of flow according to the selected symbol is released. After the electronic solenoid (2) has been switched off, the control spool (3) is pushed back into its central position or into its initial position (except for valves with "OF" detent and valves without type "O" spring). A manual override (6) allows for the manual switching of the valve without solenoid energization.
To ensure proper functioning, make sure that the pressure chamber of the solenoid is filled with oil.
 
Adjustable spool switching time (only with DC solenoids)
The optional installation of a throttle screw (7) or orifice (8) -see below - offers the possibility of increasing the switching time to 100ms or more for WE10-L5X series of 5-chamber directional valves. The switching time is influenced by factors such as pressure, flow rate and oil viscosity, depending on the situation of installation. When the main spool (3) is in the neutral or initial position, the spring chambers at both sides are filled with oil, if reversing the spool, the oil in the spring chamber flows through the connecting channel (9) to move the spool forward. The adjustment time can be adjusted according to actual needs by limiting the connection channel (9) (such as screwing in the throttle screw or installing the orifice to reduce the overcurrent area).

Type WE10.L5X/O... (only possible with symbols A, C and D)
This version is a directional valve with 2 switched positions and 2solenoids without detent. There is no defined spool position in the de-energised condition.
 
Type WE10.L5X/OF...(Impulse spool) (only possible with symbols A, C and D)
This version is a directional valve with 2 detented switched positions and 2 solenoids. Thus, the spool is held in the last switched position, permanent energisation of the solenoid is not required.
 
Throttle insert (Type 4WE10.L5X/.../B...)
The use of a throttle insert is required if, due to the operating conditions, flows can occur during the switching process which are larger than the performance limits of the valve allow.
The orifice is to be inserted into the P channel of the directional valve.

                                                 Type:WE10.L5X/OF .. . (Impulse spool)
 
Specifications

Symbols

1) Example: Spool E with switched position “a”.Ordering detail..EA..
 
Technical data

 
Electrical data

When connecting the electrics, the protective conductor must be connected according to the relevant regulations.
Note: The solenoid coils must not be painted. Actuation of the manual override is only possible up to a tank pressure of approx. 50 bar [725 psi]. The simultaneous actuation of 2 solenoids of one valve must be ruled out!
 
Unit dimensions (Dimensions in mm)

1.1 Solenoid "a"
1.2 Solenoid "b"
2 Dimension of 3-position valves
3 Dimension of 2-position valves
4 Connector without indicator light according to DIN EN 175301-803
5 Connector with indicator light according to DIN EN 175301-803
6 DT04-2P Deutsch connector
7 Name plate
8 Identical seal rings for ports A, B, P, TA and TB
9 Plug screw for valves with one solenoid
10 Space required to remove connector
11 Space required to remove coil
12 Securing nut, tightening torque
M_A = 6+2 Nm [4.43 +1.48 ft-lbs]
13 Porting pattern according to ISO 4401-05-04-0-05 and DIN 24340 A10
14 TB can be used in connection with separately produced bore
15 Valve fixing screws:
4 hexagon socket head cap screws, metric
ISO 4762-M6×40-10.9
Tightening torque MA = 15.5 Nm [11.4 ft-lbs] ±10 %
With different friction coefficients,
the tightening torques can be adjusted accordingly!
 
It must be ordered separately, if connection plate is needed. Type:
G 66/01 (G3/8) G 66/02 (M18×1.5)
G 67/01 (G1/2) G 67/02 (M22×1.5)
G 534/01 (G3/4) G 534/02 (M27×1.5)
 
Notice:
1. Deviating from ISO 4401, port T is called TA and port T1 is called TB in this data sheet.
2. The dimensions are nominal dimensions which are subject to tolerances.