SUN HYDRAULICS
RDJAQSV
$408.04 USD
- SUN HYDRAULICS
- Material:RDJAQSV
- Model:RDJA-QSV
- 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 RDJAQSV (RDJAQSV) is a direct-acting relief cartridge valve designed to protect hydraulic components from pressure transients by functioning as a normally closed, pressure-limiting device. When inlet port pressure reaches the valve's preset level, it opens to the tank port, regulating flow to prevent excessive pressure rise. This valve is characterized by its smooth and quiet operation, near-zero leakage, and high dirt tolerance, making it immune to silting while providing rapid response times. The RDJAQSV is physically and functionally interchangeable with other 2-port relief cartridges of the same frame size, allowing for versatile integration in various systems. It can handle maximum pressure at port 2 and is suitable for cross-port relief circuits and load holding applications. The valve's performance is relatively unaffected by changes in oil temperature or contamination levels. It incorporates Sun's floating style construction to minimize internal binding risks due to installation torque or machining variations. For optimal repeatability, users should select a spring range where the desired relief setting lies midrange to high between minimum and maximum pressures. The valve features an adjustment mechanism that requires depressurization before altering settings; adjustments involve checking the current setting, removing pressure, adjusting as needed, and verifying the new setting. The RDJAQSV has a capacity of 200 gpm (760 L/min) and operates at a maximum pressure of 5000 psi (350 bar). It features an impressive response time of approximately 2 ms and minimal leakage at reseat conditions. With robust construction and adaptability for systems using phosphate ester fluids through EPDM seals, this cartridge valve offers reliable performance across demanding applications.
The Sun Hydraulics RDJAQSV (RDJAQSV) is a direct-acting relief cartridge valve designed to protect hydraulic components from pressure transients by functioning as a normally closed, pressure-limiting device. When inlet port pressure reaches the valve's preset level, it opens to the tank port, regulating flow to prevent excessive pressure rise. This valve is characterized by its smooth and quiet operation, near-zero leakage, and high dirt tolerance, making it immune to silting while providing rapid response times. The RDJAQSV is physically and functionally interchangeable with other 2-port relief cartridges of the same frame size, allowing for versatile integration in various systems. It can handle maximum pressure at port 2 and is suitable for cross-port relief circuits and load holding applications. The valve's performance is relatively unaffected by changes in oil temperature or contamination levels. It incorporates Sun's floating style construction to minimize internal binding risks due to installation torque or machining variations. For optimal repeatability, users should select a spring range where the desired relief setting lies midrange to high between minimum and maximum pressures. The valve features an adjustment mechanism that requires depressurization before altering settings; adjustments involve checking the current setting, removing pressure, adjusting as needed, and verifying the new setting. The RDJAQSV has a capacity of 200 gpm (760 L/min) and operates at a maximum pressure of 5000 psi (350 bar). It features an impressive response time of approximately 2 ms and minimal leakage at reseat conditions. With robust construction and adaptability for systems using phosphate ester fluids through EPDM seals, this cartridge valve offers reliable performance across demanding applications.
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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- 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