SUN HYDRAULICS
RQEBFEN
$73.86 USD
- SUN HYDRAULICS
- Material:RQEBFEN
- Model:RQEB-FEN
- Summary:Cartridge
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 RQEBFEN (RQEBFEN) is a kickdown relief cartridge designed to function similarly to a circuit breaker in hydraulic systems. This valve activates when the pressure at inlet port 1 surpasses its set threshold, allowing an unrestricted flow from port 1 to tank port 2 and remaining open as long as the pressure differential exists. Resetting requires the cessation of flow and equalization of pressure between ports. The cartridge features a main stage orifice protected by a 150-micron stainless steel screen and is unsuitable for load-holding applications, making it ideal for actuator-side usage. For pump-side applications, pump flow must halt for valve reset. Back pressure on tank port 2 directly adds to the valve setting at a 1:1 ratio. All two-port relief cartridges, excluding pilot reliefs, are interchangeable with identical flow paths and cavities for given frame sizes. Corrosion-resistant options are available, identifiable by model code suffixes AP or LH, indicating external stainless steel or zinc-nickel plating, respectively. The valve employs Sun's floating style construction to reduce internal part binding risks due to installation torque or machining variations. Key specifications include a capacity of 25 gpm (95 L/min) and a maximum operating pressure of 5000 psi (350 bar), with typical response time at 25 ms and maximum leakage at 110 SUS (24 cSt) being 2 in\u00b3/min (30 cc/min). Adjustment involves up to five clockwise turns to increase settings, with specific torque requirements for installation and adjustment components provided. Weighing .30 lb (.15 kg), this model is not recommended for system relief due to slower response times compared to standard pilot-operated valves but offers robust performance in preventing overpressure scenarios when used appropriately.
The Sun Hydraulics RQEBFEN (RQEBFEN) is a kickdown relief cartridge designed to function similarly to a circuit breaker in hydraulic systems. This valve activates when the pressure at inlet port 1 surpasses its set threshold, allowing an unrestricted flow from port 1 to tank port 2 and remaining open as long as the pressure differential exists. Resetting requires the cessation of flow and equalization of pressure between ports. The cartridge features a main stage orifice protected by a 150-micron stainless steel screen and is unsuitable for load-holding applications, making it ideal for actuator-side usage. For pump-side applications, pump flow must halt for valve reset. Back pressure on tank port 2 directly adds to the valve setting at a 1:1 ratio. All two-port relief cartridges, excluding pilot reliefs, are interchangeable with identical flow paths and cavities for given frame sizes. Corrosion-resistant options are available, identifiable by model code suffixes AP or LH, indicating external stainless steel or zinc-nickel plating, respectively. The valve employs Sun's floating style construction to reduce internal part binding risks due to installation torque or machining variations. Key specifications include a capacity of 25 gpm (95 L/min) and a maximum operating pressure of 5000 psi (350 bar), with typical response time at 25 ms and maximum leakage at 110 SUS (24 cSt) being 2 in\u00b3/min (30 cc/min). Adjustment involves up to five clockwise turns to increase settings, with specific torque requirements for installation and adjustment components provided. Weighing .30 lb (.15 kg), this model is not recommended for system relief due to slower response times compared to standard pilot-operated valves but offers robust performance in preventing overpressure scenarios when used appropriately.
Kick-down relief cartridges act similar to a circuit breaker in an electrical system. The valves will kick completely open and remain open once the pressure at the inlet (port 1) exceeds the valve settting, creating an unrestricted flow path from port 1 to tank (port 2). The valve remains open as long as the pressure at port 1 exceeds the pressure at port 2. To reset the valve, flow from port 1 to port 2 must cease and pressure at port 2 must be equal to or greater than the pressure at port 1.
- To reset valve, flow through the cartridge must cease.
- Main stage orifice is protected by a 150 micron stainless steel screen.
- Not suitable for use in load holding applications.
- Intended for use on the actuator side of the system as flow through the valve must cease for the valve to reset. If used on the pump side of a system, pump flow must be shut off for the valve to reset.
- Back pressure on the tank port (port 2) is directly additive to the valve setting at a 1:1 ratio.
- All 2-port relief cartridges (except pilot reliefs) are physically and functionally interchangeable (same flow path, same cavity for a given frame size).
- Corrosion resistant cartridge valves are intended for use in corrosive environments and are identified by the model code suffix /AP for external stainless steel components, or /LH for external zinc-nickel plated components. See the CONFIGURATION section for all options. For further details, please see the Materials of Construction page located under TECH RESOURCES.
- Incorporates the Sun floating style construction to minimize the possibility of internal parts binding due to excessive installation torque and/or cavity/cartridge machining variations.
| Cavity | T-10A |
| Series | 1 |
| Capacity | 25 gpm95 L/min. |
| Factory Pressure Settings Established at | Kick down pointKick down point |
| Maximum Operating Pressure | 5000 psi350 bar |
| Response Time - Typical | 25 ms25 ms |
| Maximum Valve Leakage at 110 SUS (24 cSt) | 2 in³/min.@1000 psi30 cc/min.@70 bar |
| Adjustment - Number of Clockwise Turns to Increase Setting | 55 |
| Valve Hex Size | 7/8 in.22,2 mm |
| Valve Installation Torque | 30 - 35 lbf ft41 - 47 Nm |
| Adjustment Screw Internal Hex Size | 5/32 in.4 mm |
| Locknut Hex Size | 9/16 in.15 mm |
| Locknut Torque | 80 - 90 lbf in.9 - 10 Nm |
| Model Weight | .30 lb0,15 kg |
| Seal kit - Cartridge | Viton: 990-010-006 |
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Additional Resources
- Tri-Grip Handknob Now Offered From Sun as a Standard Control Option
- QuickDesign with SmartConnect Offers Drag-and-Drop Schematic Tool
- Sun Introduces 'Hybrid' Valves
- CE/TÜV Certified Pressure Relief Valves
- Pressure Relief and Regulating Cartridge Valve Technical Tips
- Pilot Operated, Balanced Poppet Relief Valves
- Sun Expands Corrosion-Resistant Solutions
- Sun Offers Zinc-Nickel Plating for Corrosion Resistance
- Sun Cartridges with EPDM Seals
- Series 4 PLUS Cartridges Offer Higher Flows with Lower Pressure Losses
- Pilot-Operated, Balanced Poppet, Anti Shock Reliefs
- CavitySaver multi-function valves deliver single-cartridge solutions
- 'Soft' Relief Eliminates Pressure Spikes
- Manufacturing Sun Cartridge Cavities
- Pressure Relief and Regulating Valves
- Cavity Information (S-171) and Tooling
- Sun Model Code Explanation; 999-901-334
- Cartridges: Materials of Construction
- Fluid and Temperature Recommendations
- Performance Data
- Sun's Floating Style Screw-In Cartridge
- Units of Measure, Settings, and Conversions
Notes:
- Do not use in load holding applications.
- For Series 1 cartridges configured with an O control (panel mount handknob), a .75 in. (19 mm) diameter hole is required in the panel.