SUN HYDRAULICS
RPGEQGN
$102.46 USD
- SUN HYDRAULICS
- Material:RPGEQGN
- Model:RPGE-QGN
- 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 RPGEQGN (RPGEQGN) is a fast-acting, pilot-operated, balanced piston relief cartridge designed to protect hydraulic components from pressure transients. This normally closed, pressure-limiting valve opens rapidly when the inlet port pressure reaches the valve setting, directing flow to the tank port and throttling it to limit pressure rise. Known for its low pressure rise versus flow and quick response time of approximately 2 milliseconds, this valve is highly efficient. It features a main stage orifice protected by a 150-micron stainless steel screen and incorporates Sun's floating style construction to minimize internal part binding due to installation torque or machining variations. The RPGEQGN model is suitable for cross port relief circuits, accepting maximum pressure at port 2; however, users should consider spool leakage in such applications. It is not recommended for load-holding applications due to potential leakage issues. The back pressure on the tank port directly adds to the valve setting at a 1:1 ratio. This cartridge can handle a maximum flow capacity of 50 gpm (200 L/min) and operate at pressures up to 5000 psi (350 bar). The valve includes an adjustment screw with an internal hex size of 5/32 inches (4 mm) and requires specific torque settings for installation. With EPDM seals available for systems using phosphate ester fluids, it\u2019s crucial to avoid petroleum-based fluids which can damage these seals. The RPGEQGN model weighs approximately .50 lb (.25 kg) and comes with a Viton seal kit option (990203006). This relief cartridge is ideal for applications requiring rapid response times and reliable protection against overpressure conditions in hydraulic systems.
The Sun Hydraulics RPGEQGN (RPGEQGN) is a fast-acting, pilot-operated, balanced piston relief cartridge designed to protect hydraulic components from pressure transients. This normally closed, pressure-limiting valve opens rapidly when the inlet port pressure reaches the valve setting, directing flow to the tank port and throttling it to limit pressure rise. Known for its low pressure rise versus flow and quick response time of approximately 2 milliseconds, this valve is highly efficient. It features a main stage orifice protected by a 150-micron stainless steel screen and incorporates Sun's floating style construction to minimize internal part binding due to installation torque or machining variations. The RPGEQGN model is suitable for cross port relief circuits, accepting maximum pressure at port 2; however, users should consider spool leakage in such applications. It is not recommended for load-holding applications due to potential leakage issues. The back pressure on the tank port directly adds to the valve setting at a 1:1 ratio. This cartridge can handle a maximum flow capacity of 50 gpm (200 L/min) and operate at pressures up to 5000 psi (350 bar). The valve includes an adjustment screw with an internal hex size of 5/32 inches (4 mm) and requires specific torque settings for installation. With EPDM seals available for systems using phosphate ester fluids, it\u2019s crucial to avoid petroleum-based fluids which can damage these seals. The RPGEQGN model weighs approximately .50 lb (.25 kg) and comes with a Viton seal kit option (990203006). This relief cartridge is ideal for applications requiring rapid response times and reliable protection against overpressure conditions in hydraulic systems.
Fast-acting, pilot-operated, balanced piston relief cartridges are normally closed, pressure-limiting valves used to protect hydraulics components from pressure transients. Fast opening and closing is gained at the expense of smoothness. When the pressure at the inlet (port 1) reaches the valve setting, the valve starts to open to tank (port 2), throttling flow to limit the pressure rise. These valves have low pressure rise vs. flow and are very fast.
- All 2-port relief cartridges (except pilot reliefs) are physically and functionally interchangeable (same flow path, same cavity for a given frame size).
- Will accept maximum pressure at port 2; suitable for use in cross port relief circuits. If used in cross port relief circuits, consider spool leakage.
- Main stage orifice is protected by a 150 micron stainless steel screen.
- Not suitable for use in load holding applications due to spool leakage.
- Back pressure on the tank port (port 2) is directly additive to the valve setting at a 1:1 ratio.
- Cartridges configured with EPDM seals are for use in systems with phosphate ester fluids. Exposure to petroleum based fluids, greases and lubricants will damage the seals.
- 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 | 4 gpm15 L/min. |
| Maximum Operating Pressure | 5000 psi350 bar |
| Response Time - Typical | 2 ms2 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
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- 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
- Manufacturing Sun Cartridge Cavities
- Pressure Relief and Regulating Valves
- 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
- Cavity Information (S-171) and Tooling
Notes:
- For Series 1 cartridges configured with an O control (panel mount handknob), a .75 in. (19 mm) diameter hole is required in the panel.