SUN HYDRAULICS
DRBOLDN
$137.80 USD
- SUN HYDRAULICS
- Material:DRBOLDN
- Model:DRBO-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 DRBOLDN (Material Number: DRBOLDN) is a direct-acting, 3-way directional cartridge valve designed for moderate flow circuits. This versatile valve can function independently or be used to actuate larger pilot-operated directional cartridges or logic cartridges. It operates by shifting when the pressure differential between port 1 and port 4 exceeds a pre-set value. Port 3 serves as a work port, with bidirectional flow paths between ports 2 and 3, as well as ports 1 and 2. The direct-acting design ensures low internal leakage and minimal pilot flow consumption, making it an efficient choice for hydraulic systems. Interchangeable with pilot-operated versions, the DRBOLDN fits the same cavities and maintains consistent flow paths. The valve is capable of modulating between two positions rather than being bistable, providing precise control over hydraulic operations. It incorporates Sun's floating style construction to minimize internal binding due to installation torque or machining variations. The DRBOLDN features a cavity size of T21A and belongs to Series 1 with a capacity of up to 7 gpm (28 L/min). It operates at a maximum pressure of 5000 psi (350 bar) with factory pressure settings established at 4 gpm (15 L/min). The maximum allowable pressure at port 3 is limited to 3000 psi (210 bar) due to fatigue strength considerations. This cartridge valve also includes easy adjustment capabilities with specific torque requirements for installation and locknut adjustments. The model weighs approximately .55 lb (0.25 kg) and uses Viton seal kits for durability in various applications.
The Sun Hydraulics DRBOLDN (Material Number: DRBOLDN) is a direct-acting, 3-way directional cartridge valve designed for moderate flow circuits. This versatile valve can function independently or be used to actuate larger pilot-operated directional cartridges or logic cartridges. It operates by shifting when the pressure differential between port 1 and port 4 exceeds a pre-set value. Port 3 serves as a work port, with bidirectional flow paths between ports 2 and 3, as well as ports 1 and 2. The direct-acting design ensures low internal leakage and minimal pilot flow consumption, making it an efficient choice for hydraulic systems. Interchangeable with pilot-operated versions, the DRBOLDN fits the same cavities and maintains consistent flow paths. The valve is capable of modulating between two positions rather than being bistable, providing precise control over hydraulic operations. It incorporates Sun's floating style construction to minimize internal binding due to installation torque or machining variations. The DRBOLDN features a cavity size of T21A and belongs to Series 1 with a capacity of up to 7 gpm (28 L/min). It operates at a maximum pressure of 5000 psi (350 bar) with factory pressure settings established at 4 gpm (15 L/min). The maximum allowable pressure at port 3 is limited to 3000 psi (210 bar) due to fatigue strength considerations. This cartridge valve also includes easy adjustment capabilities with specific torque requirements for installation and locknut adjustments. The model weighs approximately .55 lb (0.25 kg) and uses Viton seal kits for durability in various applications.
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 |
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