SUN HYDRAULICS
DNDASTV248
$189.62 USD
- SUN HYDRAULICS
- Material:DNDASTV248
- Model:DNDA-STV@248
- 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 DNDASTV248 (Material Number: DNDASTV248) is a solenoid-operated 4-way, 2-position cartridge valve designed with a direct-acting, balanced spool and a soft shift feature to significantly reduce system shock during valve actuation. This soft shift cartridge is interchangeable with the standard version but operates within lower performance limits. It is particularly useful in applications where reduced shock is beneficial, though it should not be relied upon for precise timing control; for such needs, Sun's electroproportional valves are recommended. The soft shift feature increases response time compared to standard solenoids, typically ranging from 150 ms to 300 ms, influenced by factors such as flow, pressure, coil voltage, oil viscosity, and ambient temperature. To ensure consistent performance, port 1 should maintain positive pressure. This model includes a push-type manual override control but does not support other manual controls like T or D when using the soft shift feature; however, these can be installed in the field if necessary. Note that manual override functionality is incompatible with weatherized coils. The solenoid tube assembly of this valve is fatigue-rated for service at up to 5000 psi (350 bar) and uses a wet armature design that exposes the working fluid to coil-generated heat\u2014a consideration for long-term coil energization as some fluids may degrade at high temperatures. The valve\u2019s unique magnetic design enhances efficiency by providing high spool actuating force per watt expended. It offers various coil connector options with ratings up to IP69K for environmental protection. The valve incorporates Sun's floating style construction to minimize internal part binding due to excessive installation torque or machining variations in cavity/cartridge interfaces. Additional specifications include a capacity of 4 gpm (15 L/min), maximum operating pressure of 5000 psi (350 bar), and maximum valve leakage at specified conditions of 10 in\u00b3/min (3000 psi).
The Sun Hydraulics DNDASTV248 (Material Number: DNDASTV248) is a solenoid-operated 4-way, 2-position cartridge valve designed with a direct-acting, balanced spool and a soft shift feature to significantly reduce system shock during valve actuation. This soft shift cartridge is interchangeable with the standard version but operates within lower performance limits. It is particularly useful in applications where reduced shock is beneficial, though it should not be relied upon for precise timing control; for such needs, Sun's electroproportional valves are recommended. The soft shift feature increases response time compared to standard solenoids, typically ranging from 150 ms to 300 ms, influenced by factors such as flow, pressure, coil voltage, oil viscosity, and ambient temperature. To ensure consistent performance, port 1 should maintain positive pressure. This model includes a push-type manual override control but does not support other manual controls like T or D when using the soft shift feature; however, these can be installed in the field if necessary. Note that manual override functionality is incompatible with weatherized coils. The solenoid tube assembly of this valve is fatigue-rated for service at up to 5000 psi (350 bar) and uses a wet armature design that exposes the working fluid to coil-generated heat\u2014a consideration for long-term coil energization as some fluids may degrade at high temperatures. The valve\u2019s unique magnetic design enhances efficiency by providing high spool actuating force per watt expended. It offers various coil connector options with ratings up to IP69K for environmental protection. The valve incorporates Sun's floating style construction to minimize internal part binding due to excessive installation torque or machining variations in cavity/cartridge interfaces. Additional specifications include a capacity of 4 gpm (15 L/min), maximum operating pressure of 5000 psi (350 bar), and maximum valve leakage at specified conditions of 10 in\u00b3/min (3000 psi).
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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