SUN HYDRAULICS
RPGEKBN
$107.42 USD
- SUN HYDRAULICS
- Material:RPGEKBN
- Model:RPGE-KBN
- 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 RPGEKBN (RPGEKBN) is a fast-acting, pilot-operated, balanced piston relief cartridge designed for hydraulic systems to protect components from pressure transients. This valve is typically used in applications where rapid response to pressure changes is critical, as it opens quickly to limit pressure rise when the inlet pressure reaches the setpoint. The RPGEKBN model features low pressure rise versus flow and offers fast opening and closing capabilities, though it may sacrifice smoothness for speed. It is compatible with cross port relief circuits but requires consideration of spool leakage in such configurations. This cartridge can handle a maximum operating pressure of 5000 psi (350 bar) and has a capacity of 50 gpm (200 L/min). Its main stage orifice is safeguarded by a 150-micron stainless steel screen, enhancing durability and performance reliability. The valve incorporates Sun's floating style construction, minimizing the risk of internal parts binding due to excessive installation torque or machining variations. However, it is not suitable for load holding applications due to potential spool leakage. The RPGEKBN accepts maximum pressure at port 2 and considers back pressure on the tank port directly additive to the valve setting at a 1:1 ratio. It can be configured with EPDM seals for use with phosphate ester fluids, although exposure to petroleum-based fluids should be avoided as it can damage the seals. The valve features an adjustment screw with an internal hex size of 5/32 inches (4 mm) and requires a locknut torque of 80-90 lbf-in (9-10 Nm). The model weighs approximately 0.50 lb (0.25 kg) and includes a Viton seal kit option under part number 990203006.
The Sun Hydraulics RPGEKBN (RPGEKBN) is a fast-acting, pilot-operated, balanced piston relief cartridge designed for hydraulic systems to protect components from pressure transients. This valve is typically used in applications where rapid response to pressure changes is critical, as it opens quickly to limit pressure rise when the inlet pressure reaches the setpoint. The RPGEKBN model features low pressure rise versus flow and offers fast opening and closing capabilities, though it may sacrifice smoothness for speed. It is compatible with cross port relief circuits but requires consideration of spool leakage in such configurations. This cartridge can handle a maximum operating pressure of 5000 psi (350 bar) and has a capacity of 50 gpm (200 L/min). Its main stage orifice is safeguarded by a 150-micron stainless steel screen, enhancing durability and performance reliability. The valve incorporates Sun's floating style construction, minimizing the risk of internal parts binding due to excessive installation torque or machining variations. However, it is not suitable for load holding applications due to potential spool leakage. The RPGEKBN accepts maximum pressure at port 2 and considers back pressure on the tank port directly additive to the valve setting at a 1:1 ratio. It can be configured with EPDM seals for use with phosphate ester fluids, although exposure to petroleum-based fluids should be avoided as it can damage the seals. The valve features an adjustment screw with an internal hex size of 5/32 inches (4 mm) and requires a locknut torque of 80-90 lbf-in (9-10 Nm). The model weighs approximately 0.50 lb (0.25 kg) and includes a Viton seal kit option under part number 990203006.
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 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.