SUN HYDRAULICS
DNDASTV648
$188.83 USD
- SUN HYDRAULICS
- Material:DNDASTV648
- Model:DNDA-STV@648
- 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 DNDASTV648 (DNDASTV648) is a solenoid-operated, 4-way, 2-position cartridge valve designed for applications requiring a soft shift feature to minimize system shock during actuation. This direct-acting, balanced spool directional valve is ideal for situations where reducing shock is critical but timing precision is not paramount. The soft shift characteristic of this cartridge valve significantly increases the response time compared to standard solenoids, with typical response times ranging from 150 ms to 300 ms depending on factors such as flow, pressure, coil voltage, oil viscosity, and ambient temperature. For optimal performance in soft shift applications, port 1 should maintain positive pressure. This model includes a push-type manual override control that allows for manual operation when necessary. While other manual control options like T or D are not available with the soft shift control from the manufacturer, they can be installed in the field if needed. It's important to note that manual override functionality is incompatible with weatherized coils. The valve's solenoid tube assembly is fatigue-rated for service up to 5000 psi (350 bar), ensuring durability under high-pressure conditions. The DNDASTV648 features a wet armature design that allows the working fluid to surround the armature and absorb heat generated by the coil\u2014an essential consideration for extended coil energization periods. The unique magnetic design of the solenoid delivers high efficiency by providing significant spool actuating force per watt expended. This model supports various coil connector options with ratings up to IP69K for enhanced environmental protection. Incorporating Sun Hydraulics' floating style construction helps prevent internal parts binding due to excessive installation torque or machining variations in cavities and cartridges. With a capacity of 4 gpm (15 L/min) and maximum operating pressure of 5000 psi (350 bar), this valve offers reliable performance in demanding hydraulic systems.
The Sun Hydraulics DNDASTV648 (DNDASTV648) is a solenoid-operated, 4-way, 2-position cartridge valve designed for applications requiring a soft shift feature to minimize system shock during actuation. This direct-acting, balanced spool directional valve is ideal for situations where reducing shock is critical but timing precision is not paramount. The soft shift characteristic of this cartridge valve significantly increases the response time compared to standard solenoids, with typical response times ranging from 150 ms to 300 ms depending on factors such as flow, pressure, coil voltage, oil viscosity, and ambient temperature. For optimal performance in soft shift applications, port 1 should maintain positive pressure. This model includes a push-type manual override control that allows for manual operation when necessary. While other manual control options like T or D are not available with the soft shift control from the manufacturer, they can be installed in the field if needed. It's important to note that manual override functionality is incompatible with weatherized coils. The valve's solenoid tube assembly is fatigue-rated for service up to 5000 psi (350 bar), ensuring durability under high-pressure conditions. The DNDASTV648 features a wet armature design that allows the working fluid to surround the armature and absorb heat generated by the coil\u2014an essential consideration for extended coil energization periods. The unique magnetic design of the solenoid delivers high efficiency by providing significant spool actuating force per watt expended. This model supports various coil connector options with ratings up to IP69K for enhanced environmental protection. Incorporating Sun Hydraulics' floating style construction helps prevent internal parts binding due to excessive installation torque or machining variations in cavities and cartridges. With a capacity of 4 gpm (15 L/min) and maximum operating pressure of 5000 psi (350 bar), this valve offers reliable performance in demanding hydraulic systems.
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 |
Show FAQ