SUN HYDRAULICS
RPGCCUN
$96.70 USD
Tags:
- SUN HYDRAULICS
- Material:RPGCCUN
- Model:RPGC-CUN
- 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 RPGCCUN (RPGCCUN) is a pilot-operated, balanced piston relief cartridge designed for precise pressure regulation in hydraulic systems. This normally closed valve opens to the tank port when the inlet pressure reaches the set point, effectively throttling flow to maintain desired pressure levels. Notable for its accuracy and low pressure rise relative to flow, this cartridge ensures smooth and quiet operation with moderate response speed. The RPGCCUN is interchangeable with other 2-port relief cartridges of the same frame size, offering flexibility in various configurations. It can handle maximum pressure at port 2 and is suitable for cross-port relief circuits, although spool leakage should be considered in such applications. The valve features a main stage orifice protected by a 150-micron stainless steel screen but is not recommended for load-holding applications due to potential leakage. Additionally, back pressure on the tank port directly affects the valve setting at a 1:1 ratio. For systems utilizing phosphate ester fluids, cartridges with EPDM seals are available; however, exposure to petroleum-based substances will damage these seals. Corrosion-resistant options are also offered with external stainless steel or zinc-nickel plated components. The valve incorporates Sun's floating style construction to minimize binding risks from installation torque or machining variations. With a capacity of 50 gpm (200 L/min) and a maximum operating pressure of 5000 psi (350 bar), it provides reliable performance across various applications. Factory settings are established at specific flow rates, and adjustments can be made using internal hex screws and locknuts provided with specific torque requirements for secure installation. The RPGCCUN weighs .50 lb (.25 kg) and includes Viton seal kits for enhanced durability in demanding environments.
The Sun Hydraulics RPGCCUN (RPGCCUN) is a pilot-operated, balanced piston relief cartridge designed for precise pressure regulation in hydraulic systems. This normally closed valve opens to the tank port when the inlet pressure reaches the set point, effectively throttling flow to maintain desired pressure levels. Notable for its accuracy and low pressure rise relative to flow, this cartridge ensures smooth and quiet operation with moderate response speed. The RPGCCUN is interchangeable with other 2-port relief cartridges of the same frame size, offering flexibility in various configurations. It can handle maximum pressure at port 2 and is suitable for cross-port relief circuits, although spool leakage should be considered in such applications. The valve features a main stage orifice protected by a 150-micron stainless steel screen but is not recommended for load-holding applications due to potential leakage. Additionally, back pressure on the tank port directly affects the valve setting at a 1:1 ratio. For systems utilizing phosphate ester fluids, cartridges with EPDM seals are available; however, exposure to petroleum-based substances will damage these seals. Corrosion-resistant options are also offered with external stainless steel or zinc-nickel plated components. The valve incorporates Sun's floating style construction to minimize binding risks from installation torque or machining variations. With a capacity of 50 gpm (200 L/min) and a maximum operating pressure of 5000 psi (350 bar), it provides reliable performance across various applications. Factory settings are established at specific flow rates, and adjustments can be made using internal hex screws and locknuts provided with specific torque requirements for secure installation. The RPGCCUN weighs .50 lb (.25 kg) and includes Viton seal kits for enhanced durability in demanding environments.
Pilot-operated, balanced-piston relief cartridges are normally closed pressure regulating valves. When the pressure at the inlet (port 1) reaches the valve setting, the valve starts to open to tank (port 2), throttling flow to regulate the pressure. These valves are accurate, have low pressure rise vs. flow, they are smooth and quiet, and are moderately 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.
- W and Y controls (where applicable) can be specified with or without a special setting. When no special setting is specified, the valve is adjustable throughout its full range using the W or Y control. When a special setting is specified, this setting represents the maximum setting of the valve.
- 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 | 4 gpm15 L/min. |
| Maximum Operating Pressure | 5000 psi350 bar |
| Response Time - Typical | 10 ms10 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
- 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
- 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
- Manufacturing Sun Cartridge Cavities
- Pressure Relief and Regulating Valves
- Sun's Floating Style Screw-In Cartridge
- Units of Measure, Settings, and Conversions
- Cavity Information (S-171) and Tooling
- Sun Model Code Explanation; 999-901-334
- Cartridges: Materials of Construction
- Fluid and Temperature Recommendations
- Performance Data
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.