SUN HYDRAULICS
XQGELANBQ
$787.60 USD
Tags:
- SUN HYDRAULICS
- Material:XQGELANBQ
- Model:XQGE-LAN-BQ
- 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 XQGELANBQ (XQGELANBQ) is a sophisticated valve assembly designed for charging accumulators with a fixed displacement pump. It efficiently manages system pressure by unloading the pump when the pressure reaches a predetermined set point and re-engaging it when the pressure drops to a specific level determined by the pilot valve's fixed percentage. This dual-function ventable relief valve acts as both a main stage to unload the pump and an overpressure relief for the system. For optimal operation, it requires a separate drain line to mitigate erratic behavior due to tank line pressure fluctuations. Users must carefully select an adjustment range, as system pressure drops and flows can influence unloading valve performance. The design features large porting relative to its capacity, encouraging the use of sizable piping to reduce flow-induced pressure drops. The spool design of the pilot valve maintains a consistent differential ratio, thanks to its fixed diameters that resist wear over time. It is crucial that the accumulator pilot valve is set below any reliefs in the pump side of the system to prevent excessive heating. The integrated overpressure relief device is configured higher than any pilot valve setting and is capped for safety. With a capacity of 40 gpm (160 L/min) and designed for line mount applications, this assembly offers robust performance in hydraulic systems where precise control of accumulator charging is paramount.
The Sun Hydraulics XQGELANBQ (XQGELANBQ) is a sophisticated valve assembly designed for charging accumulators with a fixed displacement pump. It efficiently manages system pressure by unloading the pump when the pressure reaches a predetermined set point and re-engaging it when the pressure drops to a specific level determined by the pilot valve's fixed percentage. This dual-function ventable relief valve acts as both a main stage to unload the pump and an overpressure relief for the system. For optimal operation, it requires a separate drain line to mitigate erratic behavior due to tank line pressure fluctuations. Users must carefully select an adjustment range, as system pressure drops and flows can influence unloading valve performance. The design features large porting relative to its capacity, encouraging the use of sizable piping to reduce flow-induced pressure drops. The spool design of the pilot valve maintains a consistent differential ratio, thanks to its fixed diameters that resist wear over time. It is crucial that the accumulator pilot valve is set below any reliefs in the pump side of the system to prevent excessive heating. The integrated overpressure relief device is configured higher than any pilot valve setting and is capped for safety. With a capacity of 40 gpm (160 L/min) and designed for line mount applications, this assembly offers robust performance in hydraulic systems where precise control of accumulator charging is paramount.
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.