SUN HYDRAULICS
RPGECWN
$101.46 USD
- SUN HYDRAULICS
- Material:RPGECWN
- Model:RPGE-CWN
- 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 RPGECWN (RPGECWN) is a fast-acting, pilot-operated, balanced piston relief cartridge designed to protect hydraulic components from pressure transients. These valves are normally closed and function as pressure-limiting devices by opening rapidly when the inlet pressure reaches the valve setting, thereby throttling flow to tank port 2 to limit further pressure rise. This model is known for its quick response time of approximately 2 milliseconds, making it ideal for applications requiring rapid pressure control. The valve features a low-pressure rise versus flow characteristic and is interchangeable with other 2-port relief cartridges of the same frame size. The RPGECWN can handle a maximum operating pressure of up to 5000 psi (350 bar) and has a capacity of 50 gpm (200 L/min). It includes a main stage orifice protected by a 150-micron stainless steel screen, ensuring durability and reliability in demanding environments. However, it is not suitable for load-holding applications due to potential spool leakage. Additionally, any back pressure on the tank port is directly additive to the valve setting at a 1:1 ratio. For systems using phosphate ester fluids, cartridges configured with EPDM seals are recommended as exposure to petroleum-based fluids can damage these seals. The valve incorporates Sun\u2019s floating style construction to minimize internal part binding due to installation torque or machining variations. Installation requires specific torques: the valve hex size is 1 1/8 in. (28.6 mm), with an installation torque between 45 - 50 lbf ft (61 - 68 Nm). Adjustments can be made via an internal hex adjustment screw sized at 5/32 in. (4 mm), secured by a locknut requiring an additional torque of 80 - 90 lbf in. (9 - 10 Nm). The model weighs approximately .50 lb (.25 kg) and includes Viton seal kits for enhanced performance and longevity.
The Sun Hydraulics RPGECWN (RPGECWN) is a fast-acting, pilot-operated, balanced piston relief cartridge designed to protect hydraulic components from pressure transients. These valves are normally closed and function as pressure-limiting devices by opening rapidly when the inlet pressure reaches the valve setting, thereby throttling flow to tank port 2 to limit further pressure rise. This model is known for its quick response time of approximately 2 milliseconds, making it ideal for applications requiring rapid pressure control. The valve features a low-pressure rise versus flow characteristic and is interchangeable with other 2-port relief cartridges of the same frame size. The RPGECWN can handle a maximum operating pressure of up to 5000 psi (350 bar) and has a capacity of 50 gpm (200 L/min). It includes a main stage orifice protected by a 150-micron stainless steel screen, ensuring durability and reliability in demanding environments. However, it is not suitable for load-holding applications due to potential spool leakage. Additionally, any back pressure on the tank port is directly additive to the valve setting at a 1:1 ratio. For systems using phosphate ester fluids, cartridges configured with EPDM seals are recommended as exposure to petroleum-based fluids can damage these seals. The valve incorporates Sun\u2019s floating style construction to minimize internal part binding due to installation torque or machining variations. Installation requires specific torques: the valve hex size is 1 1/8 in. (28.6 mm), with an installation torque between 45 - 50 lbf ft (61 - 68 Nm). Adjustments can be made via an internal hex adjustment screw sized at 5/32 in. (4 mm), secured by a locknut requiring an additional torque of 80 - 90 lbf in. (9 - 10 Nm). The model weighs approximately .50 lb (.25 kg) and includes Viton seal kits for enhanced performance and longevity.
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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- 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.