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SUN HYDRAULICS
XQGELANBM


$754.30 USD

Tags:

  • SUN HYDRAULICS
  • Material:XQGELANBM
  • Model:XQGE-LAN-BM
  • Summary:Y-assembly

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***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 XQGELANBM (XQGELANBM) is a versatile valve assembly designed specifically for charging an accumulator using a fixed displacement pump. This innovative product automatically unloads the pump when the system pressure reaches a predetermined set point, effectively managing energy consumption and system efficiency. As the pressure drops to a value determined by the pilot valve's fixed percentage, the pump re-engages to recharge the accumulator. The assembly features a ventable relief that serves dual functions: acting as both a main stage to unload the pump and as an overpressure relief for the system. A separate drain line is necessary to prevent erratic operations caused by fluctuations in tank line pressure. When implementing this valve assembly, careful selection of adjustment range is crucial due to potential impacts from system pressure drops and flow rates on unloading valves. The design maintains a fixed differential ratio through its spool design, ensuring consistent performance over time. It's important to set the accumulator pilot valve below any system reliefs on the pump side to avoid excessive heating. The included relief component acts as an overpressure device, capped higher than any pilot valve settings. With a capacity of 40 gpm (160 L/min) and designed for line mount applications, this assembly encourages large piping use to minimize issues related to flow-induced pressure drops. Additionally, it\u2019s essential to consider system design intricacies such as operating pressures and flow rates, which can affect performance due to narrow bands between unload and reset phases.

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.

Capacity40 gpm160 L/min.
Body TypeLine mountLine mount

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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.