SUN HYDRAULICS
DNDASTV824
$191.91 USD
- SUN HYDRAULICS
- Material:DNDASTV824
- Model:DNDA-STV@824
- 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 DNDASTV824 (DNDASTV824) is a solenoid-operated 4-way, 2-position cartridge valve that features a direct-acting, balanced spool design with a soft shift capability. This soft shift feature is designed to minimize system shock during valve actuation, making it ideal for applications where reducing hydraulic shock is crucial. However, it is important to note that this feature may not be suitable for applications requiring precise timing control; in such cases, electro-proportional valves are recommended. The DNDASTV824 offers a response time between 150 ms and 300 ms, which varies based on factors like flow rate, pressure, coil voltage, oil viscosity, and ambient temperature. For optimal soft shift performance, maintaining positive pressure at port 1 is advised. This valve includes a push-type manual override control but does not support additional manual controls when the soft shift feature is employed. The solenoid tube assembly of this valve is rated for fatigue at pressures up to 5000 psi (350 bar), utilizing a wet armature design that efficiently dissipates heat generated by the coil. However, care should be taken with fluids like water-glycol mixtures that may degrade over time at high temperatures. The DNDASTV824 features high-efficiency solenoids for reliable shifting and offers coil connector options with ratings up to IP69K for enhanced environmental protection. The floating style construction minimizes potential binding of internal parts due to installation torque or machining variations. With a cavity size of T-31A and a series designation of 1, this valve has a capacity of 4 gpm (15 L/min). It has specific installation requirements including a torque range of 30 - 35 lbf ft (41 - 47 Nm) and comes with Viton seal kits available under part number 990431006.
The Sun Hydraulics DNDASTV824 (DNDASTV824) is a solenoid-operated 4-way, 2-position cartridge valve that features a direct-acting, balanced spool design with a soft shift capability. This soft shift feature is designed to minimize system shock during valve actuation, making it ideal for applications where reducing hydraulic shock is crucial. However, it is important to note that this feature may not be suitable for applications requiring precise timing control; in such cases, electro-proportional valves are recommended. The DNDASTV824 offers a response time between 150 ms and 300 ms, which varies based on factors like flow rate, pressure, coil voltage, oil viscosity, and ambient temperature. For optimal soft shift performance, maintaining positive pressure at port 1 is advised. This valve includes a push-type manual override control but does not support additional manual controls when the soft shift feature is employed. The solenoid tube assembly of this valve is rated for fatigue at pressures up to 5000 psi (350 bar), utilizing a wet armature design that efficiently dissipates heat generated by the coil. However, care should be taken with fluids like water-glycol mixtures that may degrade over time at high temperatures. The DNDASTV824 features high-efficiency solenoids for reliable shifting and offers coil connector options with ratings up to IP69K for enhanced environmental protection. The floating style construction minimizes potential binding of internal parts due to installation torque or machining variations. With a cavity size of T-31A and a series designation of 1, this valve has a capacity of 4 gpm (15 L/min). It has specific installation requirements including a torque range of 30 - 35 lbf ft (41 - 47 Nm) and comes with Viton seal kits available under part number 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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