SUN HYDRAULICS
RDBALWE
$237.50 USD
Tags:
- SUN HYDRAULICS
- Material:RDBALWE
- Model:RDBA-LWE
- 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 RDBALWE (RDBALWE) is a direct-acting relief cartridge designed to safeguard hydraulic components from pressure transients by maintaining a normally closed position. When the inlet port pressure reaches the specified valve setting, it opens to the tank port, throttling flow to mitigate pressure increases. This relief valve is known for its smooth and quiet operation, with virtually no leakage and high resistance to dirt and silting. It operates rapidly and can handle maximum pressure at port 2, making it suitable for cross-port relief circuits. The valve's adjust screw seals are exposed to system pressure, necessitating pressure removal before adjustment. It is relatively insensitive to oil temperature fluctuations and contamination, ensuring reliable performance in varied conditions. The Sun Hydraulics RDBALWE is ideal for load-holding applications due to its stable performance characteristics. Back pressure at port 2 adds directly to the valve setting in a 1:1 ratio, which users must consider during installation and operation. Cartridges with EPDM seals are compatible with phosphate ester fluids but should not be exposed to petroleum-based substances as they may cause seal damage. The floating style construction of the cartridge minimizes internal parts binding risks due to installation torque or machining variations. With a capacity of 12 gpm (45 L/min) and a maximum operating pressure of 5000 psi (350 bar), this model offers quick response times\u2014typically around 2 ms\u2014and minimal leakage upon reseat. The RDBALWE features various adjustments including a hex size of 3/4 inch for installation torque between 20-25 lbf ft (27-33 Nm). Its design ensures repeatability when selecting an appropriate spring range for desired relief settings, enhancing its application versatility in hydraulic systems.
The Sun Hydraulics RDBALWE (RDBALWE) is a direct-acting relief cartridge designed to safeguard hydraulic components from pressure transients by maintaining a normally closed position. When the inlet port pressure reaches the specified valve setting, it opens to the tank port, throttling flow to mitigate pressure increases. This relief valve is known for its smooth and quiet operation, with virtually no leakage and high resistance to dirt and silting. It operates rapidly and can handle maximum pressure at port 2, making it suitable for cross-port relief circuits. The valve's adjust screw seals are exposed to system pressure, necessitating pressure removal before adjustment. It is relatively insensitive to oil temperature fluctuations and contamination, ensuring reliable performance in varied conditions. The Sun Hydraulics RDBALWE is ideal for load-holding applications due to its stable performance characteristics. Back pressure at port 2 adds directly to the valve setting in a 1:1 ratio, which users must consider during installation and operation. Cartridges with EPDM seals are compatible with phosphate ester fluids but should not be exposed to petroleum-based substances as they may cause seal damage. The floating style construction of the cartridge minimizes internal parts binding risks due to installation torque or machining variations. With a capacity of 12 gpm (45 L/min) and a maximum operating pressure of 5000 psi (350 bar), this model offers quick response times\u2014typically around 2 ms\u2014and minimal leakage upon reseat. The RDBALWE features various adjustments including a hex size of 3/4 inch for installation torque between 20-25 lbf ft (27-33 Nm). Its design ensures repeatability when selecting an appropriate spring range for desired relief settings, enhancing its application versatility in hydraulic systems.
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 |
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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