SUN HYDRAULICS
RDJAQAN
$401.50 USD
Tags:
- SUN HYDRAULICS
- Material:RDJAQAN
- Model:RDJA-QAN
- 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 RDJAQAN (RDJAQAN) is a direct-acting relief cartridge valve designed for hydraulic systems to protect components from pressure transients. This valve is normally closed and operates by opening to the tank port when inlet pressure reaches the preset level, thereby limiting pressure rise through throttling flow. Known for its smooth, quiet operation with essentially zero leakage, it is dirt tolerant and immune to silting, making it highly reliable and fast-acting. The RDJAQAN can handle a maximum operating pressure of 5000 psi (350 bar) and features a capacity of 200 gpm (760 L/min). Its design allows for physical and functional interchangeability among all 2-port relief cartridges, excluding pilot reliefs, sharing the same flow path and cavity for a given frame size. This valve is suitable for use in cross-port relief circuits as it can accept maximum pressure at port 2. When adjusting the valve's setting, ensure that system pressure is removed since the seals on the adjust screw are exposed to system pressure. It is recommended to select a spring range where the desired relief setting falls midrange to high between minimum and maximum pressures for optimal repeatability. Additionally, it performs well in load-holding applications with back pressure on tank port 2 directly additive to the valve setting at a 1:1 ratio. The cartridge incorporates Sun's floating style construction which minimizes internal part binding due to excessive installation torque or machining variations in cavity/cartridge configurations. It also offers excellent performance across varying oil temperatures and contamination levels. The RDJAQAN model weighs approximately 3.30 lb (1.50 kg) and includes an adjustment feature with an internal hex size of 5/32 inch (4 mm), ensuring easy configuration adjustments within specified torque limits.
The Sun Hydraulics RDJAQAN (RDJAQAN) is a direct-acting relief cartridge valve designed for hydraulic systems to protect components from pressure transients. This valve is normally closed and operates by opening to the tank port when inlet pressure reaches the preset level, thereby limiting pressure rise through throttling flow. Known for its smooth, quiet operation with essentially zero leakage, it is dirt tolerant and immune to silting, making it highly reliable and fast-acting. The RDJAQAN can handle a maximum operating pressure of 5000 psi (350 bar) and features a capacity of 200 gpm (760 L/min). Its design allows for physical and functional interchangeability among all 2-port relief cartridges, excluding pilot reliefs, sharing the same flow path and cavity for a given frame size. This valve is suitable for use in cross-port relief circuits as it can accept maximum pressure at port 2. When adjusting the valve's setting, ensure that system pressure is removed since the seals on the adjust screw are exposed to system pressure. It is recommended to select a spring range where the desired relief setting falls midrange to high between minimum and maximum pressures for optimal repeatability. Additionally, it performs well in load-holding applications with back pressure on tank port 2 directly additive to the valve setting at a 1:1 ratio. The cartridge incorporates Sun's floating style construction which minimizes internal part binding due to excessive installation torque or machining variations in cavity/cartridge configurations. It also offers excellent performance across varying oil temperatures and contamination levels. The RDJAQAN model weighs approximately 3.30 lb (1.50 kg) and includes an adjustment feature with an internal hex size of 5/32 inch (4 mm), ensuring easy configuration adjustments within specified torque limits.
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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- 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