SUN HYDRAULICS
RQGBOBV
$130.30 USD
Tags:
- SUN HYDRAULICS
- Material:RQGBOBV
- Model:RQGB-OBV
- 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 RQGBOBV (Material Number: RQGBOBV) is a kickdown relief cartridge designed to act similarly to a circuit breaker in an electrical system. This valve is engineered to kick completely open and remain open once the inlet port 1 pressure exceeds the valve setting, allowing an unrestricted flow path from port 1 to tank port 2. It stays open as long as the pressure at port 1 surpasses that at port 2, resetting only when the flow ceases and pressure equalizes between these ports. Notably interchangeable with other 2-port relief cartridges of the same frame size, this valve requires that flow through it must cease for resetting, making it unsuitable for load-holding applications. It is intended for use on the actuator side of hydraulic systems; if used on the pump side, pump flow must be stopped for reset. The main stage orifice features protection by a 150-micron stainless steel screen, and back pressure on tank port 2 directly adds to the valve setting at a 1:1 ratio. Constructed with corrosion-resistant materials, this valve incorporates Sun's floating style construction to minimize internal part binding due to excessive installation torque or machining variations. Its capacity is rated at 50 gpm (200 L/min) with a maximum operating pressure of 5000 psi (350 bar). The response time is typically around 25 ms, and maximum leakage under specified conditions is minimal. Installation specifications include a valve hex size of 1-1/8 inches and installation torque between 45-50 lbf ft. The adjustment screw features an internal hex size of 5/32 inches, while the locknut has a hex size of 9/16 inches with a torque range of 80-90 lbf in. Weighing approximately .50 lb (0.25 kg), this cartridge comes with a Viton seal kit option available for maintenance needs.
The Sun Hydraulics RQGBOBV (Material Number: RQGBOBV) is a kickdown relief cartridge designed to act similarly to a circuit breaker in an electrical system. This valve is engineered to kick completely open and remain open once the inlet port 1 pressure exceeds the valve setting, allowing an unrestricted flow path from port 1 to tank port 2. It stays open as long as the pressure at port 1 surpasses that at port 2, resetting only when the flow ceases and pressure equalizes between these ports. Notably interchangeable with other 2-port relief cartridges of the same frame size, this valve requires that flow through it must cease for resetting, making it unsuitable for load-holding applications. It is intended for use on the actuator side of hydraulic systems; if used on the pump side, pump flow must be stopped for reset. The main stage orifice features protection by a 150-micron stainless steel screen, and back pressure on tank port 2 directly adds to the valve setting at a 1:1 ratio. Constructed with corrosion-resistant materials, this valve incorporates Sun's floating style construction to minimize internal part binding due to excessive installation torque or machining variations. Its capacity is rated at 50 gpm (200 L/min) with a maximum operating pressure of 5000 psi (350 bar). The response time is typically around 25 ms, and maximum leakage under specified conditions is minimal. Installation specifications include a valve hex size of 1-1/8 inches and installation torque between 45-50 lbf ft. The adjustment screw features an internal hex size of 5/32 inches, while the locknut has a hex size of 9/16 inches with a torque range of 80-90 lbf in. Weighing approximately .50 lb (0.25 kg), this cartridge comes with a Viton seal kit option available for maintenance needs.
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.
- All 2-port relief cartridges (except pilot reliefs) are physically and functionally interchangeable (same flow path, same cavity for a given frame size).
- 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.
- 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-3A |
| Series | 2 |
| Capacity | 50 gpm200 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) | 3 in³/min.@1000 psi50 cc/min.@70 bar |
| Adjustment - Number of Clockwise Turns to Increase Setting | 55 |
| Valve Hex Size | 1 1/8 in.28,6 mm |
| Valve Installation Torque | 45 - 50 lbf ft61 - 68 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 | .50 lb0,25 kg |
| Seal kit - Cartridge | Viton: 990-203-006 |
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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.