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SUN HYDRAULICS
XQEGLANBD


$1,115.30 USD

Tags:

  • SUN HYDRAULICS
  • Material:XQEGLANBD
  • Model:XQEG-LAN-BD
  • 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 XQEGLANBD (XQEGLANBD) 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 when the pressure reaches a predetermined set point and reactivating it when the pressure drops to a specified level, based on the pilot valve's fixed percentage. It features a ventable relief that functions both as a main stage for unloading the pump and as an overpressure relief system. Additional attributes include a circuit that softens pump unloading and provisions for remote sensing of accumulator pressure, which is recommended to minimize error in the circuit. For optimal performance, it's essential to use a separate drain line to avoid erratic behavior due to tank line pressure fluctuations. The assembly requires careful selection of adjustment ranges, as system pressure drops and flows can influence unloading valve operations. The design accommodates high flow rates, which typically result in higher pressure drops; thus, large porting encourages using sizable piping to mitigate flow-induced pressure drops. The pilot valve's spool design maintains a consistent differential ratio due to its durable construction. The accumulator pilot valve should be set below any system reliefs on the pump side to prevent excessive heating. The relief component serves as an overpressure device, preset higher than the pilot valve's maximum setting and capped accordingly. This line-mounted assembly has a capacity of 20 gpm (80 L/min) with 50 psi (3.5 bar) check cracking pressure. It requires through-hole mounting with 22 holes at a diameter of .41 inches (10.4 mm). This robust design ensures reliable operation in various hydraulic applications where precise control of accumulator charging is critical.

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.