SUN HYDRAULICS
DRBOLSN
$138.80 USD
- SUN HYDRAULICS
- Material:DRBOLSN
- Model:DRBO-LSN
- 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 DRBOLSN (DRBOLSN) is a versatile direct-acting, 3-way directional cartridge valve designed for moderate flow circuits. It functions as a switching device with one port blocked and two ports open, making it suitable for standalone use or for actuating larger pilot-operated directional cartridges or logic cartridges. The valve operates by shifting when the pressure differential between port 1 and port 4 surpasses the set threshold. Notably, port 3 serves as a work port with bidirectional flow capability between ports 2 and 3, while the flow path between ports 1 and 2 is also bidirectional. This design ensures low internal leakage and minimal pilot flow consumption due to its direct-acting nature. The DRBOLSN model features interchangeable direct-acting and pilot-operated versions that fit the same cavities and have identical flow paths, allowing flexibility in various applications. The pressure at port 4 directly influences the valve's setting, although it is not bistable but capable of modulating between two positions. With a capacity of 7 gpm (28 L/min) and a maximum operating pressure of 5000 psi (350 bar), this valve maintains robust performance under demanding conditions. Designed with Sun's floating style construction, it minimizes potential binding of internal parts caused by excessive installation torque or machining variations in cavity/cartridge setups. The maximum pressure at port 3 should be limited to 3000 psi (210 bar) due to fatigue strength limits rather than hydraulic operating constraints. This model includes an adjustment screw with an internal hex size of 5/32 inches (4 mm) and requires specific installation torques for optimal performance.
The Sun Hydraulics DRBOLSN (DRBOLSN) is a versatile direct-acting, 3-way directional cartridge valve designed for moderate flow circuits. It functions as a switching device with one port blocked and two ports open, making it suitable for standalone use or for actuating larger pilot-operated directional cartridges or logic cartridges. The valve operates by shifting when the pressure differential between port 1 and port 4 surpasses the set threshold. Notably, port 3 serves as a work port with bidirectional flow capability between ports 2 and 3, while the flow path between ports 1 and 2 is also bidirectional. This design ensures low internal leakage and minimal pilot flow consumption due to its direct-acting nature. The DRBOLSN model features interchangeable direct-acting and pilot-operated versions that fit the same cavities and have identical flow paths, allowing flexibility in various applications. The pressure at port 4 directly influences the valve's setting, although it is not bistable but capable of modulating between two positions. With a capacity of 7 gpm (28 L/min) and a maximum operating pressure of 5000 psi (350 bar), this valve maintains robust performance under demanding conditions. Designed with Sun's floating style construction, it minimizes potential binding of internal parts caused by excessive installation torque or machining variations in cavity/cartridge setups. The maximum pressure at port 3 should be limited to 3000 psi (210 bar) due to fatigue strength limits rather than hydraulic operating constraints. This model includes an adjustment screw with an internal hex size of 5/32 inches (4 mm) and requires specific installation torques for optimal performance.
Direct-acting, 3-way directional cartridges (1 blocked, 2 to 3 open) are switching devices typically used in moderate flow circuits. They can be used by themselves or to actuate larger pilot-operated directional cartridges or logic cartridges. The valve shifts when the pressure differential between port 1 and port 4 exceeds the setting.
- Port 3 can be used as a work port.
- The flow path between port 2 and port 3 is bidirectional.
- Because of their direct-acting design, these cartridges feature low internal leakage and low pilot flow consumption.
- Direct-acting and pilot-operated versions of these valves are interchangeable. They fit the same cavities and have the same flow paths.
- Pressure at port 4 is directly additive to the setting of the valve.
- This valve is not bistable; it is capable of modulating between the two positions shown.
- The flow path between port 1 and port 2 is bidirectional.
- Maximum pressure at port 3 should be limited to 3000 psi (210 bar). This is due to fatigue strength limits not hydraulic operating limits.
- 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-21A |
| Series | 1 |
| Capacity | 7 gpm28 L/min. |
| Factory Pressure Settings Established at | 4 gpm15 L/min. |
| Maximum Operating Pressure | 5000 psi350 bar |
| Maximum Valve Leakage at 110 SUS (24 cSt) | 2 in³/min.30 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 | .55 lb0,25 kg |
| Seal kit - Cartridge | Viton: 990-021-006 |
Show FAQ