SUN HYDRAULICS
XQGELANAO
$747.20 USD
Tags:
- SUN HYDRAULICS
- Material:XQGELANAO
- Model:XQGE-LAN-AO
- 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 XQGELANAO (XQGELANAO) is a valve assembly designed to efficiently manage the charging of an accumulator using a fixed displacement pump. This system operates by unloading the pump when the pressure reaches a predetermined set point, and bringing it back online to recharge the accumulator when the pressure drops to a specified level, as determined by the pilot valve's fixed percentage. The ventable relief within this assembly functions both as a main stage to unload the pump and as an overpressure relief for the system. A separate drain line is necessary to prevent erratic operation due to tank line pressure fluctuations. When selecting this assembly, it is crucial to consider the adjustment range carefully, as system pressure drops and flow rates can significantly impact unloading valve operations. Low operating pressures combined with low differentials demand precise system design due to a narrow band between unload and reset points. High flow rates often result in high-pressure drops, affecting the differential available for valve operation. The pressure setting and resultant reseat pressure are referenced at port 1 of the QPA pilot valve, with pump pressure being higher and accumulator pressure lower due to flow-induced pressure drops. The assembly features large porting relative to its capacity, encouraging large piping use to minimize flow-induced pressure drop issues. The spool design of the pilot valve maintains a fixed differential ratio without wear or change over time. It's essential that the accumulator pilot valve is set below any reliefs on the pump side of the system to avoid severe heating issues. The relief component serves as an overpressure device, set higher than any pilot valve settings and capped for safety. With a capacity of 40 gpm (160 L/min) and designed for line mount applications, this assembly requires careful consideration of maximum system pressures concerning manifold material constraints, especially with aluminum constructions not exceeding 3000 psi (210 bar).
The Sun Hydraulics XQGELANAO (XQGELANAO) is a valve assembly designed to efficiently manage the charging of an accumulator using a fixed displacement pump. This system operates by unloading the pump when the pressure reaches a predetermined set point, and bringing it back online to recharge the accumulator when the pressure drops to a specified level, as determined by the pilot valve's fixed percentage. The ventable relief within this assembly functions both as a main stage to unload the pump and as an overpressure relief for the system. A separate drain line is necessary to prevent erratic operation due to tank line pressure fluctuations. When selecting this assembly, it is crucial to consider the adjustment range carefully, as system pressure drops and flow rates can significantly impact unloading valve operations. Low operating pressures combined with low differentials demand precise system design due to a narrow band between unload and reset points. High flow rates often result in high-pressure drops, affecting the differential available for valve operation. The pressure setting and resultant reseat pressure are referenced at port 1 of the QPA pilot valve, with pump pressure being higher and accumulator pressure lower due to flow-induced pressure drops. The assembly features large porting relative to its capacity, encouraging large piping use to minimize flow-induced pressure drop issues. The spool design of the pilot valve maintains a fixed differential ratio without wear or change over time. It's essential that the accumulator pilot valve is set below any reliefs on the pump side of the system to avoid severe heating issues. The relief component serves as an overpressure device, set higher than any pilot valve settings and capped for safety. With a capacity of 40 gpm (160 L/min) and designed for line mount applications, this assembly requires careful consideration of maximum system pressures concerning manifold material constraints, especially with aluminum constructions not exceeding 3000 psi (210 bar).
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.
- 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.
| Capacity | 40 gpm160 L/min. |
| Body Type | Line mountLine mount |
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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:
- 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.