SUN HYDRAULICS
RDJALWN
$392.65 USD
- SUN HYDRAULICS
- Material:RDJALWN
- Model:RDJA-LWN
- 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 RDJALWN (Material Number: RDJALWN) is a direct-acting relief cartridge valve designed to protect hydraulic components from pressure transients. This normally closed, pressure-limiting valve opens when the inlet port pressure reaches the valve setting, allowing flow to tank port 2 and limiting further pressure increase. It features smooth operation, minimal leakage, and high dirt tolerance, making it ideal for various hydraulic applications. The RDJALWN is interchangeable with other 2-port relief cartridges of the same frame size, ensuring compatibility and ease of replacement. It can handle maximum pressure at port 2 and is suitable for cross-port relief circuits. The valve's design includes seals on the adjust screw exposed to system pressure, necessitating pressure removal before adjustments. It operates effectively across varying oil temperatures and contamination levels, with optimal performance achieved by selecting a spring range where the desired setting falls midrange to high within its limits. This valve is also suitable for load-holding applications due to its reliable performance characteristics. Featuring Sun's floating-style construction, the RDJALWN minimizes internal part binding from excessive installation torque or machining variations. It accommodates systems with phosphate ester fluids when configured with EPDM seals but should avoid petroleum-based fluids that could damage these seals. With a capacity of 200 gpm (760 L/min) and a maximum operating pressure of 5000 psi (350 bar), this valve offers rapid response times typically around 2 ms and maintains low leakage rates upon reseat at about 10 drops/min (0.7 cc/min). The RDJALWN's design includes user-friendly adjustment features with specific torque requirements for secure installation and maintenance.
The Sun Hydraulics RDJALWN (Material Number: RDJALWN) is a direct-acting relief cartridge valve designed to protect hydraulic components from pressure transients. This normally closed, pressure-limiting valve opens when the inlet port pressure reaches the valve setting, allowing flow to tank port 2 and limiting further pressure increase. It features smooth operation, minimal leakage, and high dirt tolerance, making it ideal for various hydraulic applications. The RDJALWN is interchangeable with other 2-port relief cartridges of the same frame size, ensuring compatibility and ease of replacement. It can handle maximum pressure at port 2 and is suitable for cross-port relief circuits. The valve's design includes seals on the adjust screw exposed to system pressure, necessitating pressure removal before adjustments. It operates effectively across varying oil temperatures and contamination levels, with optimal performance achieved by selecting a spring range where the desired setting falls midrange to high within its limits. This valve is also suitable for load-holding applications due to its reliable performance characteristics. Featuring Sun's floating-style construction, the RDJALWN minimizes internal part binding from excessive installation torque or machining variations. It accommodates systems with phosphate ester fluids when configured with EPDM seals but should avoid petroleum-based fluids that could damage these seals. With a capacity of 200 gpm (760 L/min) and a maximum operating pressure of 5000 psi (350 bar), this valve offers rapid response times typically around 2 ms and maintains low leakage rates upon reseat at about 10 drops/min (0.7 cc/min). The RDJALWN's design includes user-friendly adjustment features with specific torque requirements for secure installation and maintenance.
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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- 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