SUN HYDRAULICS
DNDASCN828
$186.65 USD
- SUN HYDRAULICS
- Material:DNDASCN828
- Model:DNDA-SCN@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 DNDASCN828 (DNDASCN828) is a solenoid-operated, 4-way, 2-position cartridge valve featuring a direct-acting, balanced spool with a soft shift capability. This design minimizes system shock during valve actuation, making it suitable for applications where reduced shock is beneficial. However, the soft shift feature does result in lower performance limits compared to standard cartridges and should not be relied upon for critical timing applications; for precise control, Sun's electro-proportional valves are recommended. The response time of this valve varies between 150 ms to 300 ms, influenced by factors such as flow rate, pressure, coil voltage, oil viscosity, and ambient temperature. To maintain consistent soft shift performance, it is essential that port 1 remains at a positive pressure. The DNDASCN828 includes a push-type manual override control and supports other manual options like T or D through field installation. Note that manual override functionality is incompatible with weatherized coils. The solenoid tube assembly is rated for fatigue at up to 5000 psi (350 bar), utilizing a wet armature design where the working fluid surrounds the armature and can be affected by coil heat over prolonged energization periods. This high-efficiency solenoid design ensures reliable valve shifting with optimal spool actuating force per watt expended. The valve's construction incorporates Sun's floating style to reduce potential binding from excessive torque or machining variations. It fits into cavity T31A and belongs to Series 1 with a capacity of up to 4 gpm (15 L/min). Maximum operating pressure reaches 5000 psi (350 bar) with leakage at no more than 10 in\u00b3/min (160 cc/min) at 3000 psi (210 bar). Installation torque ranges from 30 to 35 lbf-ft (41 to 47 Nm), and the model weighs approximately .60 lb (.30 kg).
The Sun Hydraulics DNDASCN828 (DNDASCN828) is a solenoid-operated, 4-way, 2-position cartridge valve featuring a direct-acting, balanced spool with a soft shift capability. This design minimizes system shock during valve actuation, making it suitable for applications where reduced shock is beneficial. However, the soft shift feature does result in lower performance limits compared to standard cartridges and should not be relied upon for critical timing applications; for precise control, Sun's electro-proportional valves are recommended. The response time of this valve varies between 150 ms to 300 ms, influenced by factors such as flow rate, pressure, coil voltage, oil viscosity, and ambient temperature. To maintain consistent soft shift performance, it is essential that port 1 remains at a positive pressure. The DNDASCN828 includes a push-type manual override control and supports other manual options like T or D through field installation. Note that manual override functionality is incompatible with weatherized coils. The solenoid tube assembly is rated for fatigue at up to 5000 psi (350 bar), utilizing a wet armature design where the working fluid surrounds the armature and can be affected by coil heat over prolonged energization periods. This high-efficiency solenoid design ensures reliable valve shifting with optimal spool actuating force per watt expended. The valve's construction incorporates Sun's floating style to reduce potential binding from excessive torque or machining variations. It fits into cavity T31A and belongs to Series 1 with a capacity of up to 4 gpm (15 L/min). Maximum operating pressure reaches 5000 psi (350 bar) with leakage at no more than 10 in\u00b3/min (160 cc/min) at 3000 psi (210 bar). Installation torque ranges from 30 to 35 lbf-ft (41 to 47 Nm), and the model weighs approximately .60 lb (.30 kg).
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 |
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