SUN HYDRAULICS
RDJALAV
$399.11 USD
- SUN HYDRAULICS
- Material:RDJALAV
- Model:RDJA-LAV
- 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 RDJALAV (RDJALAV) is a direct-acting relief cartridge designed to protect hydraulic components from pressure transients by limiting pressure rise through throttling flow. This normally closed, pressure-limiting valve opens to tank port 2 when the inlet port 1 reaches its set pressure. Known for its smooth and quiet operation, the valve is essentially zero leak, dirt tolerant, and immune to silting, making it highly reliable and fast in response. It is functionally interchangeable with other 2-port relief cartridges of the same frame size and flow path. Capable of handling a maximum operating pressure of 5000 psi (350 bar), this valve can accept maximum pressure at port 2, making it suitable for cross-port relief circuits and load holding applications. The RDJALAV is relatively insensitive to varying oil temperatures and contamination, ensuring consistent performance across different conditions. The valve's setting can only be adjusted when system pressure is removed; this involves checking the setting, removing the pressure, adjusting the valve, and then rechecking. The RDJALAV features a cavity T-18A series with a capacity of 200 gpm (760 L/min) and factory pressure settings established at 4 gpm (15 L/min). Its response time is typically around 2 milliseconds with a maximum valve leakage at reseat of about 10 drops/minute (0.7 cc/min). The reseat setting is at 90% of the original setting. This model incorporates Sun's floating style construction to minimize internal part binding due to excessive installation torque or variations in cavity/cartridge machining. It uses EPDM seals compatible with phosphate ester fluids but not petroleum-based substances. The RDJALAV weighs approximately 3.30 lbs (1.50 kg) and includes an adjustment screw internal hex size of 5/32 inches (4 mm) for precise tuning adjustments.
The Sun Hydraulics RDJALAV (RDJALAV) is a direct-acting relief cartridge designed to protect hydraulic components from pressure transients by limiting pressure rise through throttling flow. This normally closed, pressure-limiting valve opens to tank port 2 when the inlet port 1 reaches its set pressure. Known for its smooth and quiet operation, the valve is essentially zero leak, dirt tolerant, and immune to silting, making it highly reliable and fast in response. It is functionally interchangeable with other 2-port relief cartridges of the same frame size and flow path. Capable of handling a maximum operating pressure of 5000 psi (350 bar), this valve can accept maximum pressure at port 2, making it suitable for cross-port relief circuits and load holding applications. The RDJALAV is relatively insensitive to varying oil temperatures and contamination, ensuring consistent performance across different conditions. The valve's setting can only be adjusted when system pressure is removed; this involves checking the setting, removing the pressure, adjusting the valve, and then rechecking. The RDJALAV features a cavity T-18A series with a capacity of 200 gpm (760 L/min) and factory pressure settings established at 4 gpm (15 L/min). Its response time is typically around 2 milliseconds with a maximum valve leakage at reseat of about 10 drops/minute (0.7 cc/min). The reseat setting is at 90% of the original setting. This model incorporates Sun's floating style construction to minimize internal part binding due to excessive installation torque or variations in cavity/cartridge machining. It uses EPDM seals compatible with phosphate ester fluids but not petroleum-based substances. The RDJALAV weighs approximately 3.30 lbs (1.50 kg) and includes an adjustment screw internal hex size of 5/32 inches (4 mm) for precise tuning adjustments.
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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- Performance Data
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- Units of Measure, Settings, and Conversions
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- Sun Model Code Explanation; 999-901-334
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- Fluid and Temperature Recommendations
Notes:
- U.S. Patent #4,742,846; European Patent Pending