SUN HYDRAULICS
DNDASEN748
$183.37 USD
- SUN HYDRAULICS
- Material:DNDASEN748
- Model:DNDA-SEN@748
- 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 DNDASEN748 (DNDASEN748) is a solenoid-operated, 4-way, 2-position cartridge valve known for its direct-acting, balanced spool directional control with a soft shift feature that reduces system shock during valve actuation. This cartridge is interchangeable with the standard version but has lower performance limits due to the soft shift characteristic. While it effectively minimizes shock, it is not suitable for applications requiring precise timing; for such needs, electro-proportional valves are recommended. The soft shift design increases response times between 150 ms and 300 ms, influenced by flow, pressure, coil voltage, oil viscosity, and ambient temperature. For optimal performance, port 1 should maintain positive pressure. This model includes a push-type manual override control; however, other manual controls like T or D can be installed in the field but are not compatible with weatherized coils. The solenoid tube assembly is rated for fatigue at 5000 psi (350 bar), utilizing a wet armature design that exposes working fluid to coil heat\u2014a consideration when energized over long periods as certain fluids may degrade. The solenoid's magnetic design ensures high efficiency and reliable valve shifting with minimal energy expenditure. Coil connector options offer protection ratings up to IP69K. The valve features Sun's floating style construction to reduce internal part binding risks due to excessive installation torque or machining variations. It fits into a T-31A cavity and supports a capacity of 4 gpm (15 L/min) at a maximum operating pressure of 5000 psi (350 bar). Maximum leakage is specified at 10 in\u00b3/min (3000 psi). The manual override requires a force of 5 lbs/1000 psi and has a stroke of .10 inches (2.5 mm). The valve has dimensions including a solenoid tube diameter of .75 inches (19 mm) and hex size of .78 inches (22.2 mm), with an installation torque range of 30 - 35 lbf ft (41 - 47 Nm) and weighs .60 lb (.30 kg).
The Sun Hydraulics DNDASEN748 (DNDASEN748) is a solenoid-operated, 4-way, 2-position cartridge valve known for its direct-acting, balanced spool directional control with a soft shift feature that reduces system shock during valve actuation. This cartridge is interchangeable with the standard version but has lower performance limits due to the soft shift characteristic. While it effectively minimizes shock, it is not suitable for applications requiring precise timing; for such needs, electro-proportional valves are recommended. The soft shift design increases response times between 150 ms and 300 ms, influenced by flow, pressure, coil voltage, oil viscosity, and ambient temperature. For optimal performance, port 1 should maintain positive pressure. This model includes a push-type manual override control; however, other manual controls like T or D can be installed in the field but are not compatible with weatherized coils. The solenoid tube assembly is rated for fatigue at 5000 psi (350 bar), utilizing a wet armature design that exposes working fluid to coil heat\u2014a consideration when energized over long periods as certain fluids may degrade. The solenoid's magnetic design ensures high efficiency and reliable valve shifting with minimal energy expenditure. Coil connector options offer protection ratings up to IP69K. The valve features Sun's floating style construction to reduce internal part binding risks due to excessive installation torque or machining variations. It fits into a T-31A cavity and supports a capacity of 4 gpm (15 L/min) at a maximum operating pressure of 5000 psi (350 bar). Maximum leakage is specified at 10 in\u00b3/min (3000 psi). The manual override requires a force of 5 lbs/1000 psi and has a stroke of .10 inches (2.5 mm). The valve has dimensions including a solenoid tube diameter of .75 inches (19 mm) and hex size of .78 inches (22.2 mm), with an installation torque range of 30 - 35 lbf ft (41 - 47 Nm) and weighs .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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