SUN HYDRAULICS
XQILLANEY
$2,194.00 USD
Tags:
- SUN HYDRAULICS
- Material:XQILLANEY
- Model:XQIL-LAN-EY
- Summary:Y-assembly
Quantity in stock: 0
***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 XQILLANEY (XQILLANEY) is a specialized valve assembly designed to efficiently charge an accumulator using a fixed displacement pump. This assembly features a ventable priority flow control valve that optimizes system performance by redirecting the entire pump flow to the system once the pressure reaches a set point. When pressure decreases, only the priority flow is used to recharge the accumulator, ensuring optimal resource allocation. The assembly includes additional functionalities such as a circuit for soft unloading of the pump, an overpressure relief system, and options for remote sensing of accumulator pressure. To prevent erratic operations due to tank line pressure fluctuations, it is crucial to incorporate a separate drain line when applying this assembly. The design also emphasizes careful selection of adjustment ranges, as low operating pressures and differentials can lead to narrow bands between unload and reset functions, necessitating precise system design. High flow rates can result in significant pressure drops that affect differential calculations. The assembly's porting is deliberately large relative to its capacity to encourage the use of large piping, minimizing issues caused by flow-induced pressure drops. The spool design in the pilot valve maintains a fixed differential ratio due to its durable construction. Users should set the accumulator pilot valve below any reliefs on the pump side to avoid excessive heating. This package's overpressure relief device is preset higher than the pilot valve's maximum setting and is capped for safety. With a capacity of 120 gpm (480 L/min), this line-mounted assembly requires three mounting holes with specified dimensions for secure installation. Remote sensing capabilities are recommended for minimizing errors on the accumulator side of the circuit, enhancing overall accuracy and efficiency in hydraulic systems.
The Sun Hydraulics XQILLANEY (XQILLANEY) is a specialized valve assembly designed to efficiently charge an accumulator using a fixed displacement pump. This assembly features a ventable priority flow control valve that optimizes system performance by redirecting the entire pump flow to the system once the pressure reaches a set point. When pressure decreases, only the priority flow is used to recharge the accumulator, ensuring optimal resource allocation. The assembly includes additional functionalities such as a circuit for soft unloading of the pump, an overpressure relief system, and options for remote sensing of accumulator pressure. To prevent erratic operations due to tank line pressure fluctuations, it is crucial to incorporate a separate drain line when applying this assembly. The design also emphasizes careful selection of adjustment ranges, as low operating pressures and differentials can lead to narrow bands between unload and reset functions, necessitating precise system design. High flow rates can result in significant pressure drops that affect differential calculations. The assembly's porting is deliberately large relative to its capacity to encourage the use of large piping, minimizing issues caused by flow-induced pressure drops. The spool design in the pilot valve maintains a fixed differential ratio due to its durable construction. Users should set the accumulator pilot valve below any reliefs on the pump side to avoid excessive heating. This package's overpressure relief device is preset higher than the pilot valve's maximum setting and is capped for safety. With a capacity of 120 gpm (480 L/min), this line-mounted assembly requires three mounting holes with specified dimensions for secure installation. Remote sensing capabilities are recommended for minimizing errors on the accumulator side of the circuit, enhancing overall accuracy and efficiency in hydraulic systems.
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 three additional features; a simple circuit that softens the unloading of the pump, a system over-pressure relief, 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.
| Capacity | 120 gpm480 L/min. |
| Body Type | Line 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 Quantity | 33 |
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Additional Resources
- Integrated Packages: Solutions That Grow Your Reputation
- Fluid and Temperature Recommendations
- Sun's Floating Style Screw-In Cartridge
- Sun Model Code Explanation; 999-901-334
- Custom Integrated Packages from Sun
Notes:
- Some applications may require additional volume for a smoother shift. Should this become necessary, an auxillary port has been provided to attach a length of hose for additional volume.
- Remote sensing of accumlator charge pressure can be achieved by interchanging cavity plugs XZCC and XZOC, and connecting RS port to Accumulator.
- 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.