SUN HYDRAULICS
XQEJLANDW
$808.40 USD
Tags:
- SUN HYDRAULICS
- Material:XQEJLANDW
- Model:XQEJ-LAN-DW
- 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 XQEJLANDW (Material Number: XQEJLANDW) is a specialized valve assembly designed for charging accumulators with a fixed displacement pump. It features a ventable priority flow control valve that diverts all pump flow to the system when the set pressure is reached. As pressure drops, the priority flow recharges the accumulator while maintaining system flow. This assembly includes a circuit to soften pump unloading and an overpressure relief system. It requires a separate drain line to ensure stable operation by mitigating tank line pressure fluctuations. Users should carefully select adjustment ranges, as low pressures and differentials can narrow the band between unload and reset, necessitating precise design. The pilot valve's spool design maintains a fixed differential ratio, minimizing wear over time. The assembly's large porting encourages using large piping to reduce flow-induced pressure drops. The relief component serves as an overpressure device set higher than the pilot valve's maximum setting and is capped for safety. With a capacity of 15 gpm (60 L/min), this line-mounted assembly uses .375-16 UNC 2B mounting holes with depths of .88 inches (22.4 mm) and comes in quantities of two per unit.
The Sun Hydraulics XQEJLANDW (Material Number: XQEJLANDW) is a specialized valve assembly designed for charging accumulators with a fixed displacement pump. It features a ventable priority flow control valve that diverts all pump flow to the system when the set pressure is reached. As pressure drops, the priority flow recharges the accumulator while maintaining system flow. This assembly includes a circuit to soften pump unloading and an overpressure relief system. It requires a separate drain line to ensure stable operation by mitigating tank line pressure fluctuations. Users should carefully select adjustment ranges, as low pressures and differentials can narrow the band between unload and reset, necessitating precise design. The pilot valve's spool design maintains a fixed differential ratio, minimizing wear over time. The assembly's large porting encourages using large piping to reduce flow-induced pressure drops. The relief component serves as an overpressure device set higher than the pilot valve's maximum setting and is capped for safety. With a capacity of 15 gpm (60 L/min), this line-mounted assembly uses .375-16 UNC 2B mounting holes with depths of .88 inches (22.4 mm) and comes in quantities of two per unit.
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.
| Capacity | 15 gpm60 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 | 22 |
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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.