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SUN HYDRAULICS
XQEGLANDD


$1,115.30 USD

Tags:

  • SUN HYDRAULICS
  • Material:XQEGLANDD
  • Model:XQEG-LAN-DD
  • Summary:Y-assembly

Quantity in stock: 0

Note: Sales tax, and shipping will be calculated at checkout.
***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 XQEGLANDD (XQEGLANDD) is a valve assembly designed to efficiently manage the charging of an accumulator using a fixed displacement pump. This assembly operates by unloading the pump once a specific pressure is reached, and re-engaging it when the pressure falls to a predetermined level set by the pilot valve's fixed percentage. It features a ventable relief that serves both as a main stage for unloading the pump and as an overpressure relief system. Additionally, it includes mechanisms for softening pump unloading and allows for remote sensing of accumulator pressure, which enhances accuracy and reliability in operation. For optimal performance, it's crucial to incorporate a separate drain line to avoid erratic function due to tank line pressure fluctuations. When selecting this assembly, careful consideration of adjustment ranges is necessary as system pressure drops and flow rates can significantly impact unloading valve operation. The design ensures that the spool of the pilot valve maintains a fixed differential ratio, with areas defined by spool diameters that remain consistent over time. The Sun XQEGLANDD has a capacity of 20 gpm (80 L/min) and is line-mounted with two mounting holes of .41 inches (10.4 mm) in diameter. It is essential to set the accumulator pilot valve below any reliefs on the pump side to prevent excessive heating. The integrated relief acts as an overpressure device, set higher than any pilot valve settings and capped accordingly. This product underscores precision in hydraulic systems where maintaining pressure balance is critical for efficient energy management and system longevity.

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. The assembly has two additional features; a simple circuit that softens the unloading of the pump and provisions for remote sensing of the accumulator pressure.

  • 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. Use of the remote sense for accumulator pressure will minimize the error on the accumulator side of the circuit. Use of the remote sense is highly recommended.
  • 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.

Capacity20 gpm80 L/min.
Check Cracking Pressure50 psi3,5 bar
Body TypeLine mountLine mount
Mounting Hole Diameter.41 in.10,4 mm
Mounting Hole DepthThroughThrough
Mounting Hole Quantity22

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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.