SUN HYDRAULICS
DNDASUN828
$186.65 USD
- SUN HYDRAULICS
- Material:DNDASUN828
- Model:DNDA-SUN@828
- 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 DNDASUN828 (DNDASUN828) is a solenoid-operated, 4-way, 2-position cartridge valve featuring a direct-acting, balanced spool design with a soft shift capability. This soft shift feature is engineered to significantly reduce system shock during valve actuation, making it ideal for applications where minimizing hydraulic shock is crucial. However, it is important to note that this feature should not be relied upon in scenarios requiring precise timing control; instead, Sun's electro-proportional valves are recommended for such needs. The soft shift mechanism results in a longer response time compared to Sun's standard solenoids, with typical times ranging from 150 ms to 300 ms depending on flow rate, pressure, coil voltage, oil viscosity, and ambient temperature. For optimal performance of the soft shift function, port 1 should maintain positive pressure. The valve includes a push-type manual override control for manual operation; however, other manual control options such as T or D cannot be ordered with the soft shift feature but can be installed later if needed. The solenoid tube assembly is rated for fatigue at pressures up to 5000 psi (350 bar), and the design incorporates a wet armature system that improves efficiency by surrounding the armature with working fluid. This high-efficiency solenoid design ensures reliable valve shifting by maximizing spool actuating force per watt expended. The DNDASUN828 model also features coil connector options rated up to IP69K for enhanced environmental protection and utilizes Sun's floating style construction to prevent internal binding from excessive installation torque or machining variations. With a capacity of 4 gpm (15 L/min) and maximum operating pressure of 5000 psi (350 bar), this cartridge valve offers robust performance in demanding hydraulic systems.
The Sun Hydraulics DNDASUN828 (DNDASUN828) is a solenoid-operated, 4-way, 2-position cartridge valve featuring a direct-acting, balanced spool design with a soft shift capability. This soft shift feature is engineered to significantly reduce system shock during valve actuation, making it ideal for applications where minimizing hydraulic shock is crucial. However, it is important to note that this feature should not be relied upon in scenarios requiring precise timing control; instead, Sun's electro-proportional valves are recommended for such needs. The soft shift mechanism results in a longer response time compared to Sun's standard solenoids, with typical times ranging from 150 ms to 300 ms depending on flow rate, pressure, coil voltage, oil viscosity, and ambient temperature. For optimal performance of the soft shift function, port 1 should maintain positive pressure. The valve includes a push-type manual override control for manual operation; however, other manual control options such as T or D cannot be ordered with the soft shift feature but can be installed later if needed. The solenoid tube assembly is rated for fatigue at pressures up to 5000 psi (350 bar), and the design incorporates a wet armature system that improves efficiency by surrounding the armature with working fluid. This high-efficiency solenoid design ensures reliable valve shifting by maximizing spool actuating force per watt expended. The DNDASUN828 model also features coil connector options rated up to IP69K for enhanced environmental protection and utilizes Sun's floating style construction to prevent internal binding from excessive installation torque or machining variations. With a capacity of 4 gpm (15 L/min) and maximum operating pressure of 5000 psi (350 bar), this cartridge valve offers robust performance in demanding hydraulic systems.
This solenoid-operated 4-way, 2-position cartridge is a direct-acting, balanced spool directional valve with a soft shift feature. The soft shift feature greatly reduces system shock due to valve actuation.
- The soft shift cartridge is interchangeable with the standard cartridge, however, the performance limits are lower.
- The soft shift feature can greatly reduce shock due to valve actuation but should not be counted upon in applications where timing is critical. If you need accurate ramping or timing control, consider Sun's electro-proportional valves.
- The soft shift feature results in significant increase in response time over Sun's standard solenoid. Response time is dependant on flow, pressure, coil voltage, oil viscosity and ambient temperature. Typical response time ranges from 150 ms to 300 ms.
- For consistent soft shift performance, port 1 should be at a positive pressure.
- This valve includes a push-type manual override control. Other manual control options such as T or D, cannot be ordered with the soft shift control but can be installed easily in the field. See Twist/Lock Manual Override link above for details. Please note: Manual override functionality is not compatible with weatherized coils.
- The solenoid tube assembly is fatigue rated for 5000 psi (350 bar) service.
- This valve utilizes a wet armature design. This means that the working fluid surrounds the armature and is exposed to the heat generated by the coil. This can be a factor if the coil is energized for long periods of time. Some fluids, notably water/glycol mixtures, break down at these temperatures over time and form varnishes that will affect the function of the cartridge.
- The solenoid's unique magnetic design results in a high efficiency solenoid, yielding high spool actuating force per Watt expended, leading to reliable valve shifting.
- Coil connector options offer ratings up to IP69K. See individual coil product pages for details. Additional weatherized coils and kits are available for more complete environmental protection.
- 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-31A |
| Series | 1 |
| Capacity | 4 gpm15 L/min. |
| Maximum Operating Pressure | 5000 psi350 bar |
| Maximum Valve Leakage at 110 SUS (24 cSt) | 10 in³/min.@3000 psi160 cc/min.@210 bar |
| Manual Override Force Requirement | 5 lbs/1000 psi @ Port 133 N/100 bar @ Port 1 |
| Manual Override Stroke | .10 in.2,5 mm |
| Solenoid Tube Diameter | .75 in.19 mm |
| Valve Hex Size | 7/8 in.22,2 mm |
| Valve Installation Torque | 30 - 35 lbf ft41 - 47 Nm |
| Model Weight | .60 lb0,30 kg |
| Seal kit - Cartridge | Viton: 990-431-006 |
Show FAQ