SUN HYDRAULICS
DNDASNV299
$222.79 USD
- SUN HYDRAULICS
- Material:DNDASNV299
- Model:DNDA-SNV@299
- 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 DNDASNV299 (DNDASNV299) is a solenoid-operated 4-way, 2-position cartridge that functions as a direct-acting, balanced spool directional valve with an integrated soft shift feature. This feature significantly reduces system shock upon valve actuation, making it suitable for applications where minimizing hydraulic shock is crucial. However, the soft shift should not be relied upon for applications requiring precise timing; in such cases, Sun's electro-proportional valves are recommended. The soft shift feature increases response time to between 150 ms and 300 ms depending on factors like flow, 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 but does not support other manual control options with the soft shift feature unless modified in the field. It is important to note that manual override functionality is incompatible with weatherized coils. The solenoid tube assembly is designed to withstand fatigue at pressures up to 5000 psi (350 bar) and employs a wet armature design that may affect fluid stability under prolonged coil energization. The solenoid's magnetic design ensures high efficiency by delivering substantial spool actuating force per watt consumed, ensuring reliable operation. Various coil connector options offer protection ratings up to IP69K for enhanced environmental resistance. The valve incorporates Sun's floating style construction to minimize internal binding risks due to excessive installation torque or machining variations. Key specifications include a capacity of 4 gpm (15 L/min), maximum operating pressure of 5000 psi (350 bar), and maximum valve leakage of 10 in\u00b3/min at 3000 psi (160 cc/min at 210 bar). The model has specific installation requirements including a torque range of 30\u201335 lbf ft (41\u201347 Nm) and comes with a Viton seal kit option for enhanced durability.
The Sun Hydraulics DNDASNV299 (DNDASNV299) is a solenoid-operated 4-way, 2-position cartridge that functions as a direct-acting, balanced spool directional valve with an integrated soft shift feature. This feature significantly reduces system shock upon valve actuation, making it suitable for applications where minimizing hydraulic shock is crucial. However, the soft shift should not be relied upon for applications requiring precise timing; in such cases, Sun's electro-proportional valves are recommended. The soft shift feature increases response time to between 150 ms and 300 ms depending on factors like flow, 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 but does not support other manual control options with the soft shift feature unless modified in the field. It is important to note that manual override functionality is incompatible with weatherized coils. The solenoid tube assembly is designed to withstand fatigue at pressures up to 5000 psi (350 bar) and employs a wet armature design that may affect fluid stability under prolonged coil energization. The solenoid's magnetic design ensures high efficiency by delivering substantial spool actuating force per watt consumed, ensuring reliable operation. Various coil connector options offer protection ratings up to IP69K for enhanced environmental resistance. The valve incorporates Sun's floating style construction to minimize internal binding risks due to excessive installation torque or machining variations. Key specifications include a capacity of 4 gpm (15 L/min), maximum operating pressure of 5000 psi (350 bar), and maximum valve leakage of 10 in\u00b3/min at 3000 psi (160 cc/min at 210 bar). The model has specific installation requirements including a torque range of 30\u201335 lbf ft (41\u201347 Nm) and comes with a Viton seal kit option for enhanced durability.
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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