Universal for closed systems
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Universal hydraulic control valves for closed systems
Hydraulic control valves in the universal version designed for operation in closed systems are a specialized solution for advanced power hydraulic installations. Unlike standard "open center" valves, the offered units are designed to work with variable displacement pumps and systems requiring constant pressure in the main line. Their design ensures seamless integration with circuits where the working medium circulates continuously, guaranteeing fast response times for receivers and minimizing thermal energy losses.
Application and technical characteristics
These units are used in construction machinery, forestry, and modern agricultural units where precision control is required while maintaining high energy efficiency. Thanks to the special spool design, these control valves effectively manage the flow of the medium even at high operating pressures typical for "closed center" systems. Bodies made of high-grade spheroidal cast iron ensure durability when working under variable load conditions, and precise fitting of internal elements minimizes the risk of internal leaks. We offer a wide range of solutions that can be adapted to the specific requirements of your machines – from variants for compact devices to advanced blocks for heavy industrial equipment.
Choose the right capacity for your system
To ensure optimal operation of the hydraulic system, it is crucial to match the control valve's capacity to the main pump parameters and the demand of the receivers. In our offer, you will find devices scalable in terms of nominal flow, which allows for full control over the dynamics of hydraulic cylinders and motors:
| Capacity subcategory | Application (suggestion) |
|---|---|
| 40 l/min | Small gardening machines, compact loaders, auxiliary systems. |
| 60 l/min | Universal agricultural machinery, medium-sized municipal equipment. |
| 90 l/min | Advanced forestry equipment, backhoe loaders, industrial machinery. |
| 160 l/min | Heavy construction equipment, high-power machinery, extensive hydraulic lines. |
Why choose our solutions?
Choosing our control valves is a guarantee of technical reliability and full compatibility with modern hydraulic systems. Each unit undergoes strict leakage and flow efficiency tests, which eliminates the risk of failure after installation. Our components are characterized by high work culture, minimal pressure drops, and the possibility of easy expansion with additional working sections. To keep the system in excellent condition, we encourage the use of professional hydraulic filters and regular parameter monitoring using our pressure gauges and measuring kits. Our technical team remains at your disposal regarding the selection of the appropriate control valve variant for a specific application.
Frequently Asked Questions (FAQ)
- Will a closed system control valve work in an open system?
- No, these control valves require a specific spool configuration. Attempting to use a "closed center" control valve in an open system can lead to pump overload and system damage.
- How to check if my system is closed or open?
- In open systems, oil flows freely through the control valve in the neutral position to the tank. In closed systems, this flow is blocked, and pressure is maintained in the supply line.
- Are special hoses required for a flow of 160 l/min?
- Yes, for flows of around 160 l/min, hoses with an increased internal diameter should be used to avoid excessive flow resistance and oil overheating.