SUN HYDRAULICS
RELIEF CART
RDBALEN
$51.50
- SUN HYDRAULICS
- Material:RDBALEN
- Model:RDBA-LEN
- Summary:Cartridge
Quantity in stock: 8
***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 RDBALEN (RDBALEN) is a direct-acting relief cartridge valve, designed to protect hydraulic components by limiting pressure transients. Featuring a normally closed configuration, it opens smoothly and quietly when the inlet port pressure reaches the valve\u2019s setting, directing flow to the tank port to manage pressure rise effectively. This valve is characterized by its zero-leak performance, dirt tolerance, and immunity to silting, making it highly reliable even in challenging conditions. It is also engineered for fast response times of approximately 2 milliseconds and maintains functionality across varying oil temperatures and contamination levels. The RDBALEN model is suitable for use in load-holding applications and cross-port relief circuits due to its ability to accept maximum pressure at port 2. The valve\u2019s adjust screw seals are exposed to system pressure, requiring the system pressure to be removed before adjustment. It has a maximum operating pressure of 5000 psi (350 bar) and can handle a capacity of up to 12 gpm (45 L/min). For optimal repeatability, it is recommended that users select a spring range where the desired relief setting falls between midrange and high settings. Incorporating Sun's floating style construction minimizes internal part binding risks caused by excessive installation torque or machining variations. The valve features an installation torque of 20-25 lbf ft (27-33 Nm), with a locknut torque of 80-90 lbf in (9-10 Nm). The RDBALEN model is also compatible with systems using phosphate ester fluids when configured with EPDM seals; however, exposure to petroleum-based fluids should be avoided as it may damage these seals. This versatile valve offers robust performance for various hydraulic applications requiring precise pressure management.
The Sun Hydraulics RDBALEN (RDBALEN) is a direct-acting relief cartridge valve, designed to protect hydraulic components by limiting pressure transients. Featuring a normally closed configuration, it opens smoothly and quietly when the inlet port pressure reaches the valve\u2019s setting, directing flow to the tank port to manage pressure rise effectively. This valve is characterized by its zero-leak performance, dirt tolerance, and immunity to silting, making it highly reliable even in challenging conditions. It is also engineered for fast response times of approximately 2 milliseconds and maintains functionality across varying oil temperatures and contamination levels. The RDBALEN model is suitable for use in load-holding applications and cross-port relief circuits due to its ability to accept maximum pressure at port 2. The valve\u2019s adjust screw seals are exposed to system pressure, requiring the system pressure to be removed before adjustment. It has a maximum operating pressure of 5000 psi (350 bar) and can handle a capacity of up to 12 gpm (45 L/min). For optimal repeatability, it is recommended that users select a spring range where the desired relief setting falls between midrange and high settings. Incorporating Sun's floating style construction minimizes internal part binding risks caused by excessive installation torque or machining variations. The valve features an installation torque of 20-25 lbf ft (27-33 Nm), with a locknut torque of 80-90 lbf in (9-10 Nm). The RDBALEN model is also compatible with systems using phosphate ester fluids when configured with EPDM seals; however, exposure to petroleum-based fluids should be avoided as it may damage these seals. This versatile valve offers robust performance for various hydraulic applications requiring precise pressure management.
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-162A |
| Series | 0 |
| Capacity | 12 gpm45 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 | >85% of setting>85% of setting |
| Adjustment - Number of Clockwise Turns to Increase Setting | 55 |
| Valve Hex Size | 3/4 in.19,1 mm |
| Valve Installation Torque | 20 - 25 lbf ft27 - 33 Nm |
| Adjustment Screw Internal Hex Size | 5/32 in.4 mm |
| Locknut Hex Size | 1/2 in.12,7 mm |
| Locknut Torque | 80 - 90 lbf in.9 - 10 Nm |
| Model Weight | .20 lb0,10 kg |
| Seal kit - Cartridge | Viton: 990-162-006 |
Show FAQ
Additional Resources
- CE/TÜV Certified Pressure Relief Valves
- Pressure Relief and Regulating Cartridge Valve Technical Tips
- Pilot Operated, Balanced Poppet Relief Valves
- Sun Expands Corrosion-Resistant Solutions
- Sun Offers Zinc-Nickel Plating for Corrosion Resistance
- Sun Cartridges with EPDM Seals
- Series 4 PLUS Cartridges Offer Higher Flows with Lower Pressure Losses
- Pilot-Operated, Balanced Poppet, Anti Shock Reliefs
- CavitySaver multi-function valves deliver single-cartridge solutions
- 'Soft' Relief Eliminates Pressure Spikes
- Tri-Grip Handknob Now Offered From Sun as a Standard Control Option
- QuickDesign with SmartConnect Offers Drag-and-Drop Schematic Tool
- Sun Introduces 'Hybrid' Valves
- Manufacturing Sun Cartridge Cavities
- Pressure Relief and Regulating Valves
- Sun Model Code Explanation; 999-901-334
- Cartridges: Materials of Construction
- Fluid and Temperature Recommendations
- Performance Data
- Sun's Floating Style Screw-In Cartridge
- Units of Measure, Settings, and Conversions
- Cavity Information (S-171) and Tooling
Notes:
- U.S. Patent #4,742,846; European Patent Pending
