SUN HYDRAULICS
RDJAQAV
$405.06 USD
- SUN HYDRAULICS
- Material:RDJAQAV
- Model:RDJA-QAV
- 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 RDJAQAV (Material Number: RDJAQAV) is a direct-acting relief cartridge designed to protect hydraulic components from pressure spikes by functioning as a pressure-limiting valve. It remains normally closed and activates when the inlet port pressure reaches its set threshold, opening to the tank port to throttle flow and manage pressure rise efficiently. This valve is known for its smooth operation, quiet performance, zero leakage, and dirt tolerance, making it highly reliable and fast in response. The RDJAQAV model features interchangeable 2-port relief cartridges which share the same flow path and cavity design within their frame size category. It can withstand maximum pressure at port 2 and is suitable for cross-port relief circuits. The valve's adjust screw seals are exposed to system pressure, necessitating adjustment only when the system is depressurized. For optimal repeatability, select a spring range where the desired setting is midrange to high between minimum and maximum pressures. The valve exhibits relative insensitivity to oil temperature variations and contamination, making it suitable for load-holding applications. Backpressure on port 2 directly adds to the valve setting at a 1:1 ratio. This model incorporates Sun's floating style construction to minimize internal part binding due to installation torque or machining variations in cavity/cartridge interfaces. It fits into Cavity T-18A with Series 4 capacity of up to 200 gpm (760 L/min), operates at a maximum pressure of 5000 psi (350 bar), and has a typical response time of approximately 2 ms with minimal leakage upon reseat. The adjustment mechanism allows for five full clockwise turns for setting increase, ensuring precise control over hydraulic systems' safety parameters.
The Sun Hydraulics RDJAQAV (Material Number: RDJAQAV) is a direct-acting relief cartridge designed to protect hydraulic components from pressure spikes by functioning as a pressure-limiting valve. It remains normally closed and activates when the inlet port pressure reaches its set threshold, opening to the tank port to throttle flow and manage pressure rise efficiently. This valve is known for its smooth operation, quiet performance, zero leakage, and dirt tolerance, making it highly reliable and fast in response. The RDJAQAV model features interchangeable 2-port relief cartridges which share the same flow path and cavity design within their frame size category. It can withstand maximum pressure at port 2 and is suitable for cross-port relief circuits. The valve's adjust screw seals are exposed to system pressure, necessitating adjustment only when the system is depressurized. For optimal repeatability, select a spring range where the desired setting is midrange to high between minimum and maximum pressures. The valve exhibits relative insensitivity to oil temperature variations and contamination, making it suitable for load-holding applications. Backpressure on port 2 directly adds to the valve setting at a 1:1 ratio. This model incorporates Sun's floating style construction to minimize internal part binding due to installation torque or machining variations in cavity/cartridge interfaces. It fits into Cavity T-18A with Series 4 capacity of up to 200 gpm (760 L/min), operates at a maximum pressure of 5000 psi (350 bar), and has a typical response time of approximately 2 ms with minimal leakage upon reseat. The adjustment mechanism allows for five full clockwise turns for setting increase, ensuring precise control over hydraulic systems' safety parameters.
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