SUN HYDRAULICS
XQGELANDX
$754.30 USD
Tags:
- SUN HYDRAULICS
- Material:XQGELANDX
- Model:XQGE-LAN-DX
- Summary:Y-assembly
Quantity in stock: 0
***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Sun Hydraulics directly.***
The Sun Hydraulics XQGELANDX (XQGELANDX) is a specialized valve assembly designed for efficient accumulator charging using a fixed displacement pump. This assembly effectively manages the pump's operation by unloading it when the pressure reaches a predetermined set point and bringing it back online when the pressure falls to a specified lower value. The ventable relief valve within this assembly serves dual functions: it acts as both the main stage for unloading the pump and as an overpressure relief mechanism for the system. For optimal performance, a separate drain line is crucial to avoid erratic operations due to fluctuations in tank line pressure. When selecting this valve assembly, careful consideration of adjustment ranges is necessary, as system pressure drops and flow rates can significantly impact unloading valve operations. At low operating pressures with minimal differentials, precise system design is required due to the narrow band between unload and reset points. Additionally, high flow rates can lead to significant pressure drops, affecting the valve's differential capacity. The pressure settings reference port 1 area of the QPA pilot valve; thus, pump pressures are typically higher and accumulator pressures lower due to flow-induced pressure drops. The design features large porting relative to its capacity, encouraging large piping use to minimize flow-induced pressure drop issues. The pilot valve's spool design ensures a fixed differential ratio by maintaining consistent areas that resist wear over time. It's important that the accumulator pilot valve is set below any system reliefs on the pump side to prevent excessive heating. This package includes an overpressure relief device set higher than the pilot valve's maximum setting for safety purposes. With a capacity of 40 gpm (160 L/min) and designed for line mounting, this assembly offers robust performance in hydraulic systems requiring precise control of accumulator charging cycles.
The Sun Hydraulics XQGELANDX (XQGELANDX) is a specialized valve assembly designed for efficient accumulator charging using a fixed displacement pump. This assembly effectively manages the pump's operation by unloading it when the pressure reaches a predetermined set point and bringing it back online when the pressure falls to a specified lower value. The ventable relief valve within this assembly serves dual functions: it acts as both the main stage for unloading the pump and as an overpressure relief mechanism for the system. For optimal performance, a separate drain line is crucial to avoid erratic operations due to fluctuations in tank line pressure. When selecting this valve assembly, careful consideration of adjustment ranges is necessary, as system pressure drops and flow rates can significantly impact unloading valve operations. At low operating pressures with minimal differentials, precise system design is required due to the narrow band between unload and reset points. Additionally, high flow rates can lead to significant pressure drops, affecting the valve's differential capacity. The pressure settings reference port 1 area of the QPA pilot valve; thus, pump pressures are typically higher and accumulator pressures lower due to flow-induced pressure drops. The design features large porting relative to its capacity, encouraging large piping use to minimize flow-induced pressure drop issues. The pilot valve's spool design ensures a fixed differential ratio by maintaining consistent areas that resist wear over time. It's important that the accumulator pilot valve is set below any system reliefs on the pump side to prevent excessive heating. This package includes an overpressure relief device set higher than the pilot valve's maximum setting for safety purposes. With a capacity of 40 gpm (160 L/min) and designed for line mounting, this assembly offers robust performance in hydraulic systems requiring precise control of accumulator charging cycles.
This valve assembly is meant to charge an accumulator using a fixed displacement pump. When the pressure reaches the set point of the valve, the pump is unloaded. When the pressure drops to the value determined by the fixed percentage of the pilot valve, the pump is brought back on line to recharge the accumulator. The ventable relief serves a dual purpose as a main stage to unload the pump and as a system over-pressure relief.
- When applying this assembly, a separate drain line is required to prevent erratic operation caused by tank line pressure fluctuations.
- NOTE: Careful consideration should be given when selecting an adjustment range. System pressure drops and flows tend to affect the operation of unloading valves. Low operating pressures combined with low differentials result in a very narrow band between unload and reset, requiring precise system design. High flow rates typically mean high pressure drops, which subtract from the differential the valve has to work with.
- The pressure setting and the resultant reseat pressure are in reference to the port 1 area of the QPA* pilot valve. Pump pressure will be higher and accumulator pressure will be lower due to pressure drop caused by flow.
- The porting on this assembly is large in relation to its capacity. This is done to encourage the use of correspondingly large piping to minimize problems caused by flow induced pressure drop.
- The spool design of the pilot valve allows it to maintain a fixed differential ratio because the areas are created by diameters on the spool that will not wear or change with use.
- The accumulator pilot valve must be set below any reliefs in the pump side of the system or severe heating could occur.
- The relief in this package is meant to be an over-pressure device. It is set higher than the highest setting of the pilot valve and capped.
| Capacity | 40 gpm160 L/min. |
| Body Type | Line mountLine mount |
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Additional Resources
- Integrated Packages: Solutions That Grow Your Reputation
- Fluid and Temperature Recommendations
- Sun's Floating Style Screw-In Cartridge
- Sun Model Code Explanation; 999-901-334
- Custom Integrated Packages from Sun
Notes:
- Important: Carefully consider the maximum system pressure. The pressure rating of the manifold is dependent on the manifold material, with the port type/size a secondary consideration. Manifolds constructed of aluminum are not rated for pressures higher than 3000 psi (210 bar), regardless of the port type/size specified.