SUN HYDRAULICS
XQILLANCN
$2,131.40 USD
Tags:
- SUN HYDRAULICS
- Material:XQILLANCN
- Model:XQIL-LAN-CN
- 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 XQILLANCN (XQILLANCN) is a sophisticated valve assembly engineered for charging accumulators using a fixed displacement pump. This assembly integrates a ventable priority flow control valve, ensuring that when the set pressure is reached, the priority flow control vents, allowing all pump flow to be utilized by the system. As pressure drops to a value predetermined by the pilot valve's fixed percentage, the priority flow recharges the accumulator while leaving excess pump flow available for system use. Key features include a circuit for softening pump unloading, system overpressure relief, and options for remote sensing of accumulator pressure. For optimal performance, a separate drain line is necessary to prevent erratic operations due to tank line pressure fluctuations. The selection of an adjustment range requires careful consideration due to potential impacts on unloading valves from system pressure drops and flows. The design of the spool in the pilot valve maintains a consistent differential ratio by utilizing non-wearing diameters on the spool. It is crucial that the accumulator pilot valve setting remains below any reliefs in the pump side of the system to avoid excessive heating. The assembly\u2019s porting is intentionally large relative to its capacity to encourage using large piping, minimizing issues from flow-induced pressure drops. This product's capacity reaches up to 120 gpm (480 L/min), with three mounting holes threaded at .375-16 UNC 2B in., each with a depth of .88 inches (22.4 mm). The relief included is intended as an overpressure device and should be set higher than any pilot valve settings and capped accordingly. Remote sensing can be achieved by interchanging cavity plugs XZCC and XZOC and connecting RS port to Accumulator for precise accumulator charge pressure monitoring. Consideration of maximum system pressures is essential as aluminum manifolds are not rated for pressures exceeding 3000 psi (210 bar).
The Sun Hydraulics XQILLANCN (XQILLANCN) is a sophisticated valve assembly engineered for charging accumulators using a fixed displacement pump. This assembly integrates a ventable priority flow control valve, ensuring that when the set pressure is reached, the priority flow control vents, allowing all pump flow to be utilized by the system. As pressure drops to a value predetermined by the pilot valve's fixed percentage, the priority flow recharges the accumulator while leaving excess pump flow available for system use. Key features include a circuit for softening pump unloading, system overpressure relief, and options for remote sensing of accumulator pressure. For optimal performance, a separate drain line is necessary to prevent erratic operations due to tank line pressure fluctuations. The selection of an adjustment range requires careful consideration due to potential impacts on unloading valves from system pressure drops and flows. The design of the spool in the pilot valve maintains a consistent differential ratio by utilizing non-wearing diameters on the spool. It is crucial that the accumulator pilot valve setting remains below any reliefs in the pump side of the system to avoid excessive heating. The assembly\u2019s porting is intentionally large relative to its capacity to encourage using large piping, minimizing issues from flow-induced pressure drops. This product's capacity reaches up to 120 gpm (480 L/min), with three mounting holes threaded at .375-16 UNC 2B in., each with a depth of .88 inches (22.4 mm). The relief included is intended as an overpressure device and should be set higher than any pilot valve settings and capped accordingly. Remote sensing can be achieved by interchanging cavity plugs XZCC and XZOC and connecting RS port to Accumulator for precise accumulator charge pressure monitoring. Consideration of maximum system pressures is essential as aluminum manifolds are not rated for pressures exceeding 3000 psi (210 bar).
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.