You are using an outdated browser. For a faster, safer browsing experience, upgrade for free today.

SUN HYDRAULICS
XQEJLANDD


$809.60 USD

Tags:

  • SUN HYDRAULICS
  • Material:XQEJLANDD
  • Model:XQEJ-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 XQEJLANDD (XQEJLANDD) is a sophisticated valve assembly designed for charging accumulators using a fixed displacement pump. It features a ventable priority flow control valve, which allows the entire pump flow to be available to the system once the pressure reaches a predetermined set point. This assembly efficiently manages system pressure by directing only the priority flow to recharge the accumulator, while the remaining pump flow supports other system operations. Additionally, it includes a circuit that softens pump unloading and an overpressure relief mechanism for enhanced safety. For optimal performance, this assembly requires a separate drain line to prevent erratic operation due to tank line pressure fluctuations. Users should carefully select an adjustment range, as system pressure drops and flows can impact unloading valve operations. The assembly is designed with large porting relative to its capacity to encourage the use of large piping, minimizing issues caused by flow-induced pressure drops. The spool design of the pilot valve ensures a fixed differential ratio, maintaining consistent performance over time. The accumulator pilot valve must be set below any reliefs in the pump side of the system to avoid excessive heating. The built-in relief is intended as an overpressure device and is preset higher than the highest setting of the pilot valve. With a capacity of 15 gpm (60 L/min), this line-mounted assembly features mounting holes with .375-16 UNC 2B threads and depths of .88 inches (22.4 mm). This robust design makes it suitable for applications requiring precise control over accumulator charging and system pressure management.

This valve assembly is meant to charge an accumulator using a fixed displacement pump. It incorporates a ventable priority flow control valve. When the pressure reaches the set point of the valve, the priority flow control is vented and all of the pump flow is available to the system. When the pressure drops to the value determined by the fixed percentage of the pilot valve, the priority flow is used to recharge the accumulator. Only the priority flow is directed to the accumulator leaving the rest of the pump flow available to the system. The assembly has two additional features; a simple circuit that softens the unloading of the pump and 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 2 area of the QCD* 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.

Capacity15 gpm60 L/min.
Body TypeLine mountLine mount
Mounting Hole Thread.375-16 UNC - 2B in..375-16 UNC - 2B in.
Mounting Hole Depth.88 in.22,4 mm
Mounting Hole Quantity22

Show FAQ

Additional Resources



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.