How to Design Proportional Control Valves

Hydraquip hosts a certified Danfoss PVG build center to quickly deliver 1,000s of customer PVG valve configurations. Our Fluid Power Certified sales team can help you to design the perfect valve bank for your equipment.

Designing Danfoss PVG proportional valves involves several key considerations, focusing on the application requirements, system compatibility, and control features. Here’s a step-by-step guide on how to design a system using Danfoss PVG proportional valves:

Define System Requirements:

  • Application Type: Determine what type of machinery or system the valve will be integrated into, such as mobile hydraulics in construction equipment or industrial machinery.
  • Flow and Pressure Needs: Establish the required flow rates and operating pressure. Danfoss PVG valves cater to different flow capacities and pressures, so these parameters will guide your choice.

Select the Valve Type:

  • PVG Series Selection: Danfoss offers various PVG proportional valves like PVG 32, PVG 100, and PVG 120, each suitable for different flow rates and pressures. Choose the series that matches your flow and pressure requirements.
  • Spool Characteristics: Select the spool type based on the control needs, such as directional control, flow control, or load-sensing capabilities.

Choose Control Options:

  • Manual, Hydraulic, Electric: Decide on the actuation method. Danfoss PVG valves can be operated manually, hydraulically, or by electric actuators.
  • Controller Integration: If opting for electronic control, consider the integration with electronic controllers like the Danfoss PLUS+1® system for precise control.

Modular Design:

  • Assemble Modules: PVG valves are modular, allowing you to combine different spools and actuators in one valve assembly. Plan your assembly to match your circuit design, ensuring all functional requirements are met.
  • Check Compatibility: Ensure all selected modules are compatible in terms of size, flow, and pressure specifications.

System Integration:

  • Piping and Connections: Design the hydraulic piping and connections to ensure optimal flow and minimize pressure drops.
  • Electrical Wiring: If using electric actuators or sensors, design the wiring layout and ensure compatibility with the control system.

Testing and Adjustment:

  • Bench Testing: Before fully integrating the valve into the system, conduct bench tests to check for leaks, correct functioning, and response times.
  • System Calibration: Once installed, calibrate the valve according to the operational requirements of the machine. Adjustments might be necessary for flow rates, pressure settings, and response characteristics.

Documentation and Support:

  • Technical Documentation: Refer to Danfoss’s technical documentation for detailed specifications, installation guides, and troubleshooting tips.
  • Support and Training: Danfoss offers technical support and training, which can be invaluable in complex applications or for troubleshooting issues.

By following these steps, you can effectively design a hydraulic system that utilizes Danfoss PVG proportional valves tailored to your specific application needs. For more detailed guidance or if you are dealing with particularly complex requirements, reach out to Hydraquip at for more information.