SUN HYDRAULICS
DNDASTN212
$177.21 USD
- SUN HYDRAULICS
- Material:DNDASTN212
- Model:DNDA-STN@212
- 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 DNDASTN212 (DNDASTN212) is a solenoid-operated 4-way, 2-position cartridge valve featuring a direct-acting, balanced spool design with a soft shift capability. This soft shift feature is engineered to significantly reduce system shock upon valve actuation, making it suitable for applications where minimizing hydraulic shock is crucial. However, it should not be relied upon for applications demanding precise timing; in such cases, Sun's electro-proportional valves are recommended. The soft shift functionality does increase response times compared to standard solenoids, with typical response times ranging from 150 ms to 300 ms depending on factors like flow and pressure. This valve includes a push-type manual override control and features a wet armature design that allows the working fluid to surround the armature. This design consideration is vital for long-term coil energization as certain fluids can degrade at high temperatures. The solenoid's magnetic design ensures high efficiency by delivering significant spool actuating force per watt of power used, enhancing reliability in valve shifting. The DNDASTN212 cartridge fits into T31A cavities and has a capacity of 4 gallons per minute (15 liters per minute). It supports a maximum operating pressure of 5000 psi (350 bar) and exhibits minimal leakage under standard conditions. The solenoid tube assembly is fatigue-rated for service at the same pressure level. Installation requires a torque between 30 and 35 lbf-ft (41 to 47 Nm). Additionally, this model incorporates Sun's floating style construction to mitigate the risk of internal part binding due to excessive installation torque or machining variations in cavity-cartridge interfaces.
The Sun Hydraulics DNDASTN212 (DNDASTN212) is a solenoid-operated 4-way, 2-position cartridge valve featuring a direct-acting, balanced spool design with a soft shift capability. This soft shift feature is engineered to significantly reduce system shock upon valve actuation, making it suitable for applications where minimizing hydraulic shock is crucial. However, it should not be relied upon for applications demanding precise timing; in such cases, Sun's electro-proportional valves are recommended. The soft shift functionality does increase response times compared to standard solenoids, with typical response times ranging from 150 ms to 300 ms depending on factors like flow and pressure. This valve includes a push-type manual override control and features a wet armature design that allows the working fluid to surround the armature. This design consideration is vital for long-term coil energization as certain fluids can degrade at high temperatures. The solenoid's magnetic design ensures high efficiency by delivering significant spool actuating force per watt of power used, enhancing reliability in valve shifting. The DNDASTN212 cartridge fits into T31A cavities and has a capacity of 4 gallons per minute (15 liters per minute). It supports a maximum operating pressure of 5000 psi (350 bar) and exhibits minimal leakage under standard conditions. The solenoid tube assembly is fatigue-rated for service at the same pressure level. Installation requires a torque between 30 and 35 lbf-ft (41 to 47 Nm). Additionally, this model incorporates Sun's floating style construction to mitigate the risk of internal part binding due to excessive installation torque or machining variations in cavity-cartridge interfaces.
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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