SUN HYDRAULICS
RPICLNN
$188.63 USD
- SUN HYDRAULICS
- Material:RPICLNN
- Model:RPIC-LNN
- 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 RPICLNN (Material Number: RPICLNN) is a pilot-operated, balanced-piston relief cartridge designed to regulate pressure in hydraulic systems. These normally closed valves begin to open and throttle flow to the tank port when the inlet pressure reaches the set value, ensuring precise pressure regulation. Known for their accuracy, low-pressure rise versus flow, smooth operation, and moderate speed, they are suitable for applications requiring maximum pressure acceptance at port 2 and can be used in cross-port relief circuits. However, users should consider spool leakage in such configurations. The valve's main stage orifice is protected by a stainless steel screen with 150-micron filtration capability. This cartridge is not recommended for load-holding applications due to potential spool leakage. Any back pressure on tank port 2 directly adds to the valve setting at a 1:1 ratio. The RPICLNN model features interchangeable parts with other two-port relief cartridges of the same frame size and flow path. It supports EPDM seals for systems using phosphate ester fluids but should avoid petroleum-based products that could damage these seals. Corrosion-resistant options are available with external stainless steel or zinc-nickel plating identified by model code suffixes AP or LH. The valve incorporates Sun's floating style construction to minimize internal binding risks due to excessive installation torque or machining variations. It has a capacity of 100 gpm (380 L/min), a maximum operating pressure of 5000 psi (350 bar), and typical response time of 10 ms. The adjustment mechanism allows up to five turns clockwise to increase settings, with specific torque requirements provided for installation and locknut adjustments. This model weighs approximately 1.20 lb (0.55 kg) and uses Viton seal kits for maintenance and replacements.
The Sun Hydraulics RPICLNN (Material Number: RPICLNN) is a pilot-operated, balanced-piston relief cartridge designed to regulate pressure in hydraulic systems. These normally closed valves begin to open and throttle flow to the tank port when the inlet pressure reaches the set value, ensuring precise pressure regulation. Known for their accuracy, low-pressure rise versus flow, smooth operation, and moderate speed, they are suitable for applications requiring maximum pressure acceptance at port 2 and can be used in cross-port relief circuits. However, users should consider spool leakage in such configurations. The valve's main stage orifice is protected by a stainless steel screen with 150-micron filtration capability. This cartridge is not recommended for load-holding applications due to potential spool leakage. Any back pressure on tank port 2 directly adds to the valve setting at a 1:1 ratio. The RPICLNN model features interchangeable parts with other two-port relief cartridges of the same frame size and flow path. It supports EPDM seals for systems using phosphate ester fluids but should avoid petroleum-based products that could damage these seals. Corrosion-resistant options are available with external stainless steel or zinc-nickel plating identified by model code suffixes AP or LH. The valve incorporates Sun's floating style construction to minimize internal binding risks due to excessive installation torque or machining variations. It has a capacity of 100 gpm (380 L/min), a maximum operating pressure of 5000 psi (350 bar), and typical response time of 10 ms. The adjustment mechanism allows up to five turns clockwise to increase settings, with specific torque requirements provided for installation and locknut adjustments. This model weighs approximately 1.20 lb (0.55 kg) and uses Viton seal kits for maintenance and replacements.
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.
- 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.
- All 2-port relief cartridges (except pilot reliefs) are physically and functionally interchangeable (same flow path, same cavity for a given frame size).
- 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-16A |
| Series | 3 |
| Capacity | 100 gpm380 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) | 4 in³/min.@1000 psi65 cc/min.@70 bar |
| Adjustment - Number of Clockwise Turns to Increase Setting | 55 |
| Valve Hex Size | 1 1/4 in.31,8 mm |
| Valve Installation Torque | 150 - 160 lbf ft203 - 217 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 | 1.20 lb0,55 kg |
| Seal kit - Cartridge | Viton: 990-016-006 |
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Additional Resources
- 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
- 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