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SUN HYDRAULICS
XQIFLANEN


$1,603.80 USD

Tags:

  • SUN HYDRAULICS
  • Material:XQIFLANEN
  • Model:XQIF-LAN-EN
  • Summary:Y-assembly

Quantity in stock: 0

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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 XQIFLANEN (XQIFLANEN) is a valve assembly designed to efficiently manage the charging of an accumulator using a fixed displacement pump. This assembly automatically unloads the pump when the system pressure reaches a predetermined set point, and re-engages it when pressure drops to a specified level, ensuring optimal accumulator performance. The ventable relief valve serves dual functions: it acts as a main stage for unloading the pump and also provides overpressure protection for the system. An additional feature of this assembly is its soft unloading circuit, which minimizes potential disruptions during operation. For effective application, it is crucial to incorporate a separate drain line to mitigate erratic behavior caused by fluctuations in tank line pressure. Selecting an appropriate adjustment range is essential, as low operating pressures combined with narrow differentials can lead to a very tight band between unload and reset pressures, demanding precise system design. High flow rates typically result in significant pressure drops, reducing the differential available for valve operation. The XQIFLANEN's porting is intentionally large relative to its capacity to encourage using larger piping, thereby minimizing issues related to flow-induced pressure drops. The pilot valve's spool design ensures a consistent differential ratio by utilizing diameters that remain stable over time. It is important that the accumulator pilot valve be set below any reliefs on the pump side of the system to prevent excessive heating. This assembly has a capacity of 80 gpm (320 L/min) and features line mount body type with three mounting holes threaded at .375-16 UNC 2B in., each with a depth of .88 inches (22.4 mm). The relief component within this package serves as an overpressure device and should be set higher than the highest setting of the pilot valve before being capped for safety and efficiency.

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 an additional feature; a simple circuit that softens the unloading of the pump.

  • 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.

Capacity80 gpm320 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 Quantity33

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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.