Cable or lever operated
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Hydraulic control valves complete with quick couplers, cable or lever operated
Hydraulic control valves operated by cables or levers constitute a system for controlling the flow of working fluid in hydraulic power systems of mobile and stationary machinery. They allow the operator to precisely control actuators such as single-acting and double-acting cylinders. Versions integrated with factory quick couplers allow for instant connection of working attachments without the need for additional adapters. The design of the devices ensures smooth operation in demanding industrial and agricultural conditions, eliminating the risk of technical downtime.
Application and technical characteristics
Mechanical control valves are adapted to work in hydraulic circuits powered by mineral oils, synthetic oils, and water-oil emulsions. Their working environment includes agricultural, forestry, and construction machinery, as well as power units with a capacity of up to 80 l/min. The control mechanism based on direct levers or remote Bowden cables guarantees repeatability of the spool stroke, which is essential for maintaining stable operating speeds of the actuators. The control valve bodies made of high-strength cast iron, which provides resistance to dynamic pressure spikes occurring in high-dynamics systems. The devices meet internal leakage standards, which prevents the 'drifting' of cylinders in the neutral position. The set of quick couplers integrated with the control valve block has been designed in accordance with ISO standards, ensuring compatibility with most hydraulic hoses available on the market. In case of the necessity of performing service work, it is worth paying attention to the appropriate parts for hydraulic control valve, which allow for restoring the factory efficiency of the control mechanism. Systems of this type are commonly used where simplicity of operation and resistance to external factors, such as dust or moisture, are required.
Why choose our components?
The choice of the offered control valves is based on technical reliability and full interchangeability of consumable components. Each block has undergone leakage tests under static pressure, which guarantees correct operation in accordance with the ISO 4406 standard. The use of control cables allows for moving the operator's station away from the hydraulic block, which increases operational safety in forestry and construction machinery. For the assembly of control systems, we recommend our pipe and hose clamps, which eliminate vibrations transmitted to the hydraulic installation. The offered modules with quick couplers reduce the risk of working medium leaks during each reconnecting of tools, which constitutes the most important environmental protection in modern machinery parks. To ensure the longevity of the working sections, we recommend regular replacement of filter elements, which we offer in the category hydraulic filters. Precise fitting of the spools to the body seats minimizes energy losses during flow, which directly affects the efficiency of the entire hydraulic system.
Technical specification
| Technical parameter | Value/Standard |
|---|---|
| Max working pressure | 250 bar |
| Flow rate | up to 80 l/min |
| Control type | Cable / Lever |
| Body material | Ductile iron |
| Oil temp. range | -20°C to +80°C |
Frequently Asked Questions (FAQ)
- Can a cable-controlled valve be replaced with lever control in the same block?
- Yes, the design of most control valve blocks allows for the conversion of the control mechanism by replacing the actuating elements on the section cover, provided that compatibility with the given spool type is maintained.
- What quick couplers are installed in the standard set?
- As standard, we offer ISO A (euro) type agricultural quick couplers, which are the most common solution ensuring failure-free connection in the hydraulic power systems of agricultural and construction machinery.
- Does the control valve require bleeding after replacing a hydraulic hose?
- Yes, in order to remove air pockets from the system, after connecting the quick couplers, you should perform a full actuator stroke in both directions several times at low working pressure.
- What is the permissible pressure drop on a control valve section?
- The nominal steady-state pressure drop should not exceed 5-8 bar at rated flow; higher values indicate excessive oil contamination or incorrect selection of the control valve size for the pump.