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Parker Load Control Valves up to 420 bar, 350 lpm flow
Cartridge valve series to hold or control overrunning loads for safety and stability critical applications involving lift boom or motor control functions.
All valves are compliant with mineral-based or synthetic fluids.
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They are usually pilot assisted to reduce the pressure required to operate the valve and thus to improve energy efficiency. Various pilot rations are available to suit all applications. Generally higher pilot ratios are appropriate for rotary load systems such as motors, lower pilot ratios for linear systems such as cylinders. Further details and selection guides can be found in the technical section of the included datasheets document.
Typical applications include:
• Crane Boom Control
• Excavator bucket control
• Hydraulic motor brake function
• Applications requiring thermal relief due to oil expansion
Technical Specifications
| Flow Rate | 5.3 to 92 Gal/min |
| Maximum Operating Pressure | 420, 350 bar, 6000, 5075 psi |
| For Fluid Type | Mineral-based or synthetic |
| Minimum Operating Temperature | -40 °C |
| Maximum Operating Temperature | 121 °C |
