SUN HYDRAULICS
RDJALWV
$402.00 USD
Tags:
- SUN HYDRAULICS
- Material:RDJALWV
- Model:RDJA-LWV
- 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 RDJALWV (RDJALWV) is a direct-acting relief cartridge designed to safeguard hydraulic components from pressure transients. These normally closed, pressure-limiting valves operate by opening to tank port 2 when the inlet port 1 pressure surpasses the valve setting, thereby throttling flow to curb the pressure increase. Known for their smooth and quiet operation, these valves are essentially zero leak, dirt tolerant, and immune to silting, with a rapid response time of approximately 2 milliseconds. The RDJALWV model is physically and functionally interchangeable with all 2-port relief cartridges except pilot reliefs, sharing the same flow path and cavity for a given frame size. This model can endure maximum pressure at port 2, making it suitable for cross-port relief circuits and load-holding applications. The valve remains relatively unaffected by varying oil temperatures and contamination. It's crucial to select a spring range where the desired relief setting falls between midrange and high within the minimum and maximum pressure limits for optimal repeatability. Adjustments must only be made when system pressure is removed due to seals on the adjust screw being exposed to system pressure. The valve incorporates Sun's floating style construction to minimize internal part binding from excessive installation torque or machining variations. With a capacity of 200 gpm (760 L/min) and a maximum operating pressure of 5000 psi (350 bar), this valve is equipped with EPDM seals for compatibility with phosphate ester fluids but should not be exposed to petroleum-based substances. The RDJALWV model weighs 3.30 lb (1.50 kg) and requires specific installation torques for its components, ensuring reliable performance in demanding hydraulic systems.
The Sun Hydraulics RDJALWV (RDJALWV) is a direct-acting relief cartridge designed to safeguard hydraulic components from pressure transients. These normally closed, pressure-limiting valves operate by opening to tank port 2 when the inlet port 1 pressure surpasses the valve setting, thereby throttling flow to curb the pressure increase. Known for their smooth and quiet operation, these valves are essentially zero leak, dirt tolerant, and immune to silting, with a rapid response time of approximately 2 milliseconds. The RDJALWV model is physically and functionally interchangeable with all 2-port relief cartridges except pilot reliefs, sharing the same flow path and cavity for a given frame size. This model can endure maximum pressure at port 2, making it suitable for cross-port relief circuits and load-holding applications. The valve remains relatively unaffected by varying oil temperatures and contamination. It's crucial to select a spring range where the desired relief setting falls between midrange and high within the minimum and maximum pressure limits for optimal repeatability. Adjustments must only be made when system pressure is removed due to seals on the adjust screw being exposed to system pressure. The valve incorporates Sun's floating style construction to minimize internal part binding from excessive installation torque or machining variations. With a capacity of 200 gpm (760 L/min) and a maximum operating pressure of 5000 psi (350 bar), this valve is equipped with EPDM seals for compatibility with phosphate ester fluids but should not be exposed to petroleum-based substances. The RDJALWV model weighs 3.30 lb (1.50 kg) and requires specific installation torques for its components, ensuring reliable performance in demanding hydraulic systems.
Direct-acting relief cartridges are normally closed, pressure-limiting valves used to protect hydraulic components from pressure transients. 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 are smooth and quiet, essentially zero leak, dirt tolerant, immune to silting 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.
- The seals on the adjust screw are exposed to system pressure which means this valve can only be adjusted when the pressure is removed. The setting procedure is; check the setting, remove the pressure, adjust the valve, check the new setting.
- Valve is relatively insensitive to varying oil temperatures and oil borne contamination.
- Select a spring range where the desired relief setting is approximately mid-range to high between the minimum and maximum pressure to ensure maximum valve repeatability.
- Suitable for use in load holding applications.
- 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-18A |
| Series | 4 |
| Capacity | 200 gpm760 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 Reseat | 10 drops/min.0,7 cc/min. |
| Reseat | >90% of setting>90% of setting |
| Adjustment - Number of Clockwise Turns to Increase Setting | 55 |
| Valve Hex Size | 1 5/8 in.41,3 mm |
| Valve Installation Torque | 350 - 375 lbf ft474 - 508 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 | 3.30 lb1,50 kg |
| Seal kit - Cartridge | Viton: 990-318-006 |
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Additional Resources
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- 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
- Pressure Relief and Regulating Valves
- Manufacturing Sun Cartridge Cavities
- Performance Data
- 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
Notes:
- U.S. Patent #4,742,846; European Patent Pending