SUN HYDRAULICS
DNDASTN814
$186.65 USD
- SUN HYDRAULICS
- Material:DNDASTN814
- Model:DNDA-STN@814
- 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 DNDASTN814 (DNDASTN814) is a solenoid-operated 4-way, 2-position cartridge valve designed for direct-acting, balanced spool directional control with a soft shift feature to minimize system shock during valve actuation. This soft shift capability reduces shock but may not be suitable for applications requiring precise timing; for such needs, electro-proportional valves are recommended. The soft shift cartridge is interchangeable with the standard version, though it has lower performance limits and increased response times ranging from 150 ms to 300 ms, influenced by factors like flow, pressure, coil voltage, oil viscosity, and ambient temperature. For optimal soft shift performance, ensure port 1 maintains positive pressure. This valve features a push-type manual override control and uses a wet armature design where the working fluid surrounds the armature and absorbs heat from the coil. Over time, certain fluids like water-glycol mixtures may degrade at these temperatures. The solenoid's magnetic design maximizes efficiency through high spool actuating force per watt used. It also supports various coil connector options with ratings up to IP69K for enhanced environmental protection. The valve is built using Sun's floating style construction to reduce internal part binding due to excessive torque or cavity machining variations. It fits in cavity T-31A with a series 1 capacity of 4 gpm/15 L/min and can operate at pressures up to 5000 psi/350 bar. Valve leakage at maximum capacity is limited to 10 in\u00b3/min at 3000 psi/160 cc/min at 210 bar. The manual override requires a force of 5 lbs/1000 psi (33 N/100 bar) on port 1 with a stroke of .10 in./2.5 mm. The solenoid tube measures .75 in./19 mm in diameter, while the valve hex size is .78 in./22.2 mm, requiring an installation torque of 30-35 lbf\u00b7ft (41-47 Nm). The model weighs approximately .60 lb/.30 kg and includes a Viton seal kit (990431006).
The Sun Hydraulics DNDASTN814 (DNDASTN814) is a solenoid-operated 4-way, 2-position cartridge valve designed for direct-acting, balanced spool directional control with a soft shift feature to minimize system shock during valve actuation. This soft shift capability reduces shock but may not be suitable for applications requiring precise timing; for such needs, electro-proportional valves are recommended. The soft shift cartridge is interchangeable with the standard version, though it has lower performance limits and increased response times ranging from 150 ms to 300 ms, influenced by factors like flow, pressure, coil voltage, oil viscosity, and ambient temperature. For optimal soft shift performance, ensure port 1 maintains positive pressure. This valve features a push-type manual override control and uses a wet armature design where the working fluid surrounds the armature and absorbs heat from the coil. Over time, certain fluids like water-glycol mixtures may degrade at these temperatures. The solenoid's magnetic design maximizes efficiency through high spool actuating force per watt used. It also supports various coil connector options with ratings up to IP69K for enhanced environmental protection. The valve is built using Sun's floating style construction to reduce internal part binding due to excessive torque or cavity machining variations. It fits in cavity T-31A with a series 1 capacity of 4 gpm/15 L/min and can operate at pressures up to 5000 psi/350 bar. Valve leakage at maximum capacity is limited to 10 in\u00b3/min at 3000 psi/160 cc/min at 210 bar. The manual override requires a force of 5 lbs/1000 psi (33 N/100 bar) on port 1 with a stroke of .10 in./2.5 mm. The solenoid tube measures .75 in./19 mm in diameter, while the valve hex size is .78 in./22.2 mm, requiring an installation torque of 30-35 lbf\u00b7ft (41-47 Nm). The model weighs approximately .60 lb/.30 kg and includes a Viton seal kit (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 |
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