SUN HYDRAULICS
RELIEF CART.
RPECLEE
- SUN HYDRAULICS
- Material:RPECLEE
- Model:RPEC-LEE
- Summary:Cartridge
Due to extremely high demand, please call 800-289-1330 for availability
***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 RPECLEE (Material Number: RPECLEE) is a pilot-operated, balanced piston relief cartridge designed for precise pressure regulation. It operates by remaining normally closed until the inlet port pressure reaches the valve's set point, at which point it begins to open to the tank port, effectively throttling flow to maintain optimal pressure. Known for its accuracy and smooth operation, this valve exhibits low pressure rise relative to flow and responds moderately fast with a typical response time of 10 milliseconds. The RPECLEE cartridge is interchangeable with other 2-port relief cartridges of the same frame size, featuring a consistent flow path and cavity design. This model is capable of handling a maximum operating pressure of 5000 psi (350 bar) and has a capacity of 25 gpm (95 L/min). It includes features such as a main stage orifice protected by a 150-micron stainless steel screen and is suitable for cross port relief circuits while considering potential spool leakage. However, it is not recommended for load-holding applications due to this same leakage. The valve setting can be adjusted using W or Y controls throughout its full range unless specified otherwise for special settings. Backpressure on the tank port directly adds to the valve setting at a 1:1 ratio. Cartridges with EPDM seals are designed for systems using phosphate ester fluids, as exposure to petroleum-based substances can cause seal damage. Corrosion-resistant options are available with external stainless steel or zinc-nickel plated components. Installation requires specific torque settings: valve installation torque is between 30-35 lbf\u00b7ft (41-47 Nm), adjustment screw internal hex size is 5/32 in., and locknut torque ranges from 80-90 lbf\u00b7in. The cartridge weighs approximately .30 lb (.15 kg) and utilizes Viton seals under kit number 990010006.
The Sun Hydraulics RPECLEE (Material Number: RPECLEE) is a pilot-operated, balanced piston relief cartridge designed for precise pressure regulation. It operates by remaining normally closed until the inlet port pressure reaches the valve's set point, at which point it begins to open to the tank port, effectively throttling flow to maintain optimal pressure. Known for its accuracy and smooth operation, this valve exhibits low pressure rise relative to flow and responds moderately fast with a typical response time of 10 milliseconds. The RPECLEE cartridge is interchangeable with other 2-port relief cartridges of the same frame size, featuring a consistent flow path and cavity design. This model is capable of handling a maximum operating pressure of 5000 psi (350 bar) and has a capacity of 25 gpm (95 L/min). It includes features such as a main stage orifice protected by a 150-micron stainless steel screen and is suitable for cross port relief circuits while considering potential spool leakage. However, it is not recommended for load-holding applications due to this same leakage. The valve setting can be adjusted using W or Y controls throughout its full range unless specified otherwise for special settings. Backpressure on the tank port directly adds to the valve setting at a 1:1 ratio. Cartridges with EPDM seals are designed for systems using phosphate ester fluids, as exposure to petroleum-based substances can cause seal damage. Corrosion-resistant options are available with external stainless steel or zinc-nickel plated components. Installation requires specific torque settings: valve installation torque is between 30-35 lbf\u00b7ft (41-47 Nm), adjustment screw internal hex size is 5/32 in., and locknut torque ranges from 80-90 lbf\u00b7in. The cartridge weighs approximately .30 lb (.15 kg) and utilizes Viton seals under kit number 990010006.
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-10A |
| Series | 1 |
| Capacity | 25 gpm95 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) | 2 in³/min.@1000 psi30 cc/min.@70 bar |
| Adjustment - Number of Clockwise Turns to Increase Setting | 55 |
| Valve Hex Size | 7/8 in.22,2 mm |
| Valve Installation Torque | 30 - 35 lbf ft41 - 47 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 | .30 lb0,15 kg |
| Seal kit - Cartridge | Viton: 990-010-006 |
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Additional Resources
- 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
- 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
- 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.
