4-way 3-position, 4-way 2-position and 3-way 2-position directional
valve with mechanical, manual operation
Type WMM10...L4X
Features
- Direct operating directional spool valves with mechanical, manual
operation
- For sub-plates mounting
- Hand lever
- Porting pattern confirms to DIN 24 340 form A, and ISO 4401
Function and configurations
Directional Valves with Mechanical and Manual Operation type
WMM10...L4X, are the second generation of our series 10 valves, and
are direct operated spool valves which switch the flow fluid by
rotating the handle to move the spool axially. They have
2-position, 3-position as well as various spool symbols, optional
detent device and return spring. And they are sub-plate mounting.
Type WWM.../
These valves consist of a housing (1), hand lever(2), the control
spool (3), one or two return springs (4), and a push rod (5).
In the unoperated condition the control spool (3) is held in the
neutral or starting position by the return springs (4). When the
hand lever (2) is pushed to right or left, the hand lever (2) acts
at the push rod (5) by hinge and direct controls the spool (3), at
that time, the spool (3) moves to an expected position. When the
handle returns to Zero position, spool returns to normal position
by return spring. The switched position is operated by the handle.
Type WWM.../F
Their operating principle is the same as the type WWM.../, and they
are fitted with 2 or 3 switched positions and a detent (6), so all
the switched position is fixed.
Cartridge throttle
The use of a throttle insert is required, when operating , flows
can occur during the switching processes that exceed the
performance limit of the valve.
These throttles are to be inserted into the P-channel of the
directional valve.
Directional valves type WMM10...L4X have two handles options with
different pulling direction, the detail refer to the
'Specification' and 'Unit dimensions'.
Specifications
Symbols
Technical data
| Fluid temperature range | ℃ | -30 to +80 (NBR seal) |
| -20 to +80 (FKM seal) |
| Max.operating pressure | Port A,B,P | bar | 315 |
| Port T | bar | 160 |
| Max. flow-rate | L/min | 120 |
| Flow cross section (switching neutral position) | Type V | mm2 | For symbol V 11(A/B to T) 10.3(P to A/B) |
| Type W | mm2 | For symbol W 2.5(A/B to T) |
| Type Q | mm2 | For symbol Q 5.5(A/B to T) |
| Fluid | Mineral oil suitable for NBR and FKM seal |
| Phosphate ester for FKM seal |
| Viscosity range | mm2/s | 2.8 to 500 |
| Degree of contamination | Maximum permissible degree of fluid contamination: Class 9. NAS
1638 or 20/18/15, ISO4406 |
| Weight | kg | 4.4 |
Unit dimensions (Dimensions in mm)
WMM10...-L4X...(Standard version)
WMM10...-L4X... K (K version)
1 Standard version: switched position 0 → b
.../K version :switched position 0 → a,b → a
2 Standard version: switched position 0 → a,b → a
.../K version :switched position 0 → b
3 Standard version: switched position a → b
.../K version :switched position a → b
4 Nameplate
5 O-ring 12×2, for ports A, B, P ,TA and TB
6 Additional return port when using control block
Valve fixing screws:
M6×40, GB/T 70.1-10.9,
Tightening torque
MA =15.5 Nm
must be ordered separately
