4-way 3-position, 4-way 2-position and 3-way 2-position directional
valve with mechanical, manual operation
Type WMM6...L6X
Features
- Direct operating directional spool valves
- 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
WMM6...L6X, 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 or return spring. And they are sub-plate mounting.
Type WWM.../
It consists of housing (1), hand lever (2), control spool (3), one
or two return springs (4) and push rod (5). In the non-operated
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 hand lever.
Type WWM.../F
Their operating principle is basically same as the type WWM.../,
and they are fitted with 2 or 3 switched positions and a detent, so
all the switched positions are fixed.
Cartridge throttle
The use of a throttle insert is required, when, due to given
operating conditions, 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.
Specifications
Symbols
Technical data
| Fixing position | Optional |
| 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 | 60 |
| Flow cross section (switching neutral | Type Q | mm2 | For symbol Q 6% of nominal cross section |
| Type W | mm2 | For symbol W 3% of nominal cross section |
| Fluid | Mineral oil for NBR and FKM seal |
| Phosphate ester for FKM seal |
| Viscosity range | mm2/s | 10 to 800 |
| Degree of contamination | Maximum permissible degree of fluid contamination: Class 9. NAS
1638 or 20/18/15, ISO4406 |
| Weight | kg | 1.6 |
Unit dimensions (Dimensions in mm)
1 Switched position b → a, o → a
2 Switched position a → b, o → b
3 Nameplate
4 O-ring 9.25×1.78 for ports A, B, P and T
