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|Pressure:||315 Bar||Max. Flow:||60 L/min|
|Fluid Temperature Range:||-30 To +80 (NBR Seal)/-20 To +80 (FKM Seal) ℃|
hydraulic directional control valve,
hydraulic lever control valves
4-way 3-position, 4-way 2-position and 3-way 2-position directional valve with mechanical, manual operation
- 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.
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.
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.
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.
|Fluid temperature range||℃||-30 to +80 (NBR seal)|
|-20 to +80 (FKM seal)|
|Max.operating pressure||Port A,B,P||bar||315|
|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|
Unit dimensions (Dimensions in mm)
1 Switched position b → a, o → a
2 Switched position a → b, o → b
4 O-ring 9.25×1.78 for ports A, B, P and T