Specificities
Directional spool valve, direct operated
Panel installation
45 standard valve core types with or without locking knobs
Mounting surface according to DIN 24340A, ISO 4401
WMD directional control valve is a reversing slide valve operated by rotation. It controls the opening, stopping and reversing of flow.
The control valve core (1) is operated by a manual adjustment knob (2) (2×90° rotation angle), and the rotation generated thereby is converted into axial movement through a screw device and directly acts on the control valve core (1), so that the control valve core (1) moves to the required end position, thereby opening to the required flow position. The position of the knob can control the actual switching position of the valve core (1) according to the eye. All switching positions are positioned by a positioning device.
Insert throttle
Due to working conditions, the valve flow rate may be greater than the value on the performance curve during the switching process. In this case, a cartridge throttle valve is required. The cartridge throttle valve is installed in the P oil circuit of the directional control valve.
Specifications
Working medium temperature range |
ºC |
-30 ~+80 (NBR seals) |
-20 ~+80 (Fluorine Rubber Seal) |
Maximum working pressure of oil port |
Oil port A B P |
bar |
315 |
Oil port T |
bar |
160 |
Maximum flow rate |
L/min |
120 |
Flow area (at neutral position) |
Q Type |
mm2 |
For spool type Q 6% of nominal section |
W Type |
mm2 |
3% of nominal section for spool type W |
Working medium |
Mineral oil; phosphate ester |
Viscosity range |
mm2/s |
2.8 ~500 |
Oil contamination degree |
Maximum oil contamination according to NAS 1638 Class 9 and ISO 4406 Class 20/18/15 |
Weight |
kg |
4.2 |
Hebei Ding'an Hydraulic Machinery Co., Ltd. is a professional company integrating the research, production and sales of hydraulic valves. It is an ISO9001:2000 quality management system certified enterprise. The company currently has fixed assets of more than 10 million yuan, covers an area of 16,000 square meters, has strong technical force, and has more than ten years of experience in the development and production of hydraulic valves. It can quickly and high-quality develop various mining and engineering machinery hydraulic valves according to customer requirements.