SUN HYDRAULICS
RELIEF CART
RBACLDN
$62.34 USD
- SUN HYDRAULICS
- Material:RBACLDN
- Model:RBAC-LDN
- 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 RBACLDN (RBACLDN) is a direct-acting, pilot relief cartridge valve designed for remote pressure control in hydraulic systems. This model is particularly suitable for applications requiring load holding capabilities, as it effectively manages pressure settings of other pilot-operated valves. It features a main stage orifice protected by a 150-micron stainless steel screen and incorporates Sun's floating style construction to reduce the risk of internal binding due to excessive torque or machining variations. The cartridge is compatible with phosphate ester fluids when equipped with EPDM seals; however, these seals are not suitable for petroleum-based fluids, which can cause damage. The RBACLDN valve operates at a maximum capacity of 0.25 gpm (1 L/min) and can withstand pressures up to 5000 psi (350 bar). It provides rapid response times, typically around 2 ms, and maintains minimal leakage rates at maximum viscosity levels. The valve's setting can be adjusted using the W or Y control options, offering flexibility across its full range unless a specific maximum setting is predetermined. For enhanced durability in corrosive environments, the model can be configured with corrosion-resistant materials identified by suffixes AP or LH. Installation requires precise torque specifications: 30-35 lbf ft (41-47 Nm) for the valve and 80-90 lbf in (9-10 Nm) for the locknut. The adjustment screw has an internal hex size of 5/32 inches (4 mm), while the locknut hex size measures 9/16 inches (15 mm). Weighing approximately 0.30 lb (0.15 kg), this cartridge valve is engineered to deliver reliable performance in hydraulic systems where precise pressure control is essential.
The Sun Hydraulics RBACLDN (RBACLDN) is a direct-acting, pilot relief cartridge valve designed for remote pressure control in hydraulic systems. This model is particularly suitable for applications requiring load holding capabilities, as it effectively manages pressure settings of other pilot-operated valves. It features a main stage orifice protected by a 150-micron stainless steel screen and incorporates Sun's floating style construction to reduce the risk of internal binding due to excessive torque or machining variations. The cartridge is compatible with phosphate ester fluids when equipped with EPDM seals; however, these seals are not suitable for petroleum-based fluids, which can cause damage. The RBACLDN valve operates at a maximum capacity of 0.25 gpm (1 L/min) and can withstand pressures up to 5000 psi (350 bar). It provides rapid response times, typically around 2 ms, and maintains minimal leakage rates at maximum viscosity levels. The valve's setting can be adjusted using the W or Y control options, offering flexibility across its full range unless a specific maximum setting is predetermined. For enhanced durability in corrosive environments, the model can be configured with corrosion-resistant materials identified by suffixes AP or LH. Installation requires precise torque specifications: 30-35 lbf ft (41-47 Nm) for the valve and 80-90 lbf in (9-10 Nm) for the locknut. The adjustment screw has an internal hex size of 5/32 inches (4 mm), while the locknut hex size measures 9/16 inches (15 mm). Weighing approximately 0.30 lb (0.15 kg), this cartridge valve is engineered to deliver reliable performance in hydraulic systems where precise pressure control is essential.
Direct-acting, pilot relief cartridges are used to remotely control the pressure setting of other pilot-operated valves. Because capacity is limited to pilot flow, these valves should be used with other higher flow valves.
- 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.
- Main stage orifice is protected by a 150 micron stainless steel screen.
- 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.
- W and Y controls (where applicable) can be specified with or without a special setting. When no special setting is specified, the valve is adjustable throughout its full range using the W or Y control. When a special setting is specified, this setting represents the maximum setting of the valve.
- Corrosion resistant cartridge valves are intended for use in corrosive environments and are identified by the model code suffix /AP for external stainless steel components, or /LH for external zinc-nickel plated components. See the CONFIGURATION section for all options. For further details, please see the Materials of Construction page located under TECH RESOURCES.
- 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-10A |
| Series | 1 |
| Capacity | .25 gpm1 L/min. |
| Maximum Operating Pressure | 5000 psi350 bar |
| Response Time - Typical | 2 ms2 ms |
| Maximum Valve Leakage at 110 SUS (24 cSt) | 5 drops/min.0,3 cc/min. |
| Adjustment - Number of Clockwise Turns to Increase Setting | 55 |
| Valve Hex Size | 7/8 in.22,2 mm |
| Valve Installation Torque | 30 - 35 lbf ft41 - 47 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 | .30 lb0,15 kg |
| Seal kit - Cartridge | Viton: 990-010-006 |
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Additional Resources
- 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
- 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
- Manufacturing Sun Cartridge Cavities
- Pressure Relief and Regulating Valves
- 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
- Performance Data
Notes:
- For Series 1 cartridges configured with an O control (panel mount handknob), a .75 in. (19 mm) diameter hole is required in the panel.