SUN HYDRAULICS
DNDASLN628
$179.89 USD
- SUN HYDRAULICS
- Material:DNDASLN628
- Model:DNDA-SLN@628
- 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 DNDASLN628 (DNDASLN628) is a solenoid-operated 4-way, 2-position cartridge valve designed for directional control with a soft shift feature. This direct-acting, balanced spool valve minimizes system shock during actuation, thanks to its soft shift capability. However, it should not be relied upon for applications requiring precise timing; for such needs, electro-proportional valves are recommended. The soft shift feature may increase response times, typically ranging from 150 ms to 300 ms, influenced by factors like flow, pressure, coil voltage, oil viscosity, and ambient temperature. To ensure consistent performance with the soft shift function, port 1 should maintain positive pressure. This model includes a push-type manual override control but is not compatible with weatherized coils or other manual control options like T or D unless installed in the field. The solenoid tube assembly is rated for fatigue at 5000 psi (350 bar), and the wet armature design exposes working fluid to coil heat\u2014a consideration for long-term energized states as some fluids can degrade under heat. The high-efficiency solenoid provides reliable valve shifting due to its unique magnetic design. The DNDASLN628 features Sun's floating style construction to reduce internal binding risks from excessive torque or machining variations. It fits into a T31A cavity and has a capacity of 4 gpm (15 L/min). The maximum operating pressure is 5000 psi (350 bar), with leakage capped at 10 in\u00b3/min at 3000 psi (160 cc/min at 210 bar). Manual override requires a force of 5 lbs/1000 psi (33 N/100 bar) at port 1 and has a stroke of .10 inches (2.5 mm). The valve hex size measures .78 inches (22.2 mm), with an installation torque range of 30-35 lbf ft (41-47 Nm). It weighs .60 lb (.30 kg) and utilizes Viton seals available in kit form under part number 990431006.
The Sun Hydraulics DNDASLN628 (DNDASLN628) is a solenoid-operated 4-way, 2-position cartridge valve designed for directional control with a soft shift feature. This direct-acting, balanced spool valve minimizes system shock during actuation, thanks to its soft shift capability. However, it should not be relied upon for applications requiring precise timing; for such needs, electro-proportional valves are recommended. The soft shift feature may increase response times, typically ranging from 150 ms to 300 ms, influenced by factors like flow, pressure, coil voltage, oil viscosity, and ambient temperature. To ensure consistent performance with the soft shift function, port 1 should maintain positive pressure. This model includes a push-type manual override control but is not compatible with weatherized coils or other manual control options like T or D unless installed in the field. The solenoid tube assembly is rated for fatigue at 5000 psi (350 bar), and the wet armature design exposes working fluid to coil heat\u2014a consideration for long-term energized states as some fluids can degrade under heat. The high-efficiency solenoid provides reliable valve shifting due to its unique magnetic design. The DNDASLN628 features Sun's floating style construction to reduce internal binding risks from excessive torque or machining variations. It fits into a T31A cavity and has a capacity of 4 gpm (15 L/min). The maximum operating pressure is 5000 psi (350 bar), with leakage capped at 10 in\u00b3/min at 3000 psi (160 cc/min at 210 bar). Manual override requires a force of 5 lbs/1000 psi (33 N/100 bar) at port 1 and has a stroke of .10 inches (2.5 mm). The valve hex size measures .78 inches (22.2 mm), with an installation torque range of 30-35 lbf ft (41-47 Nm). It weighs .60 lb (.30 kg) and utilizes Viton seals available in kit form under part number 990431006.
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