SUN HYDRAULICS
DNDASRV948
$211.20 USD
- SUN HYDRAULICS
- Material:DNDASRV948
- Model:DNDA-SRV@948
- 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 DNDASRV948 (Material Number: DNDASRV948) is a solenoid-operated, 4-way, 2-position cartridge valve designed for direct-acting, balanced spool directional control with a soft shift feature. This feature significantly reduces system shock during valve actuation, making it suitable for applications where gentle shifting is preferred. However, it should not be relied upon in scenarios requiring precise timing or ramping control; for such needs, Sun's electro-proportional valves are recommended. The soft shift function increases the response time compared to standard solenoids, with typical response times ranging from 150 ms to 300 ms depending on variables like flow and pressure. For optimal performance, port 1 should maintain positive pressure. The valve includes a push-type manual override control but does not support other manual control options like T or D when using the soft shift feature. It is important to note that the manual override is incompatible with weatherized coils. The solenoid tube assembly is rated for fatigue at 5000 psi (350 bar), employing a wet armature design that exposes working fluid to coil-generated heat\u2014a consideration when using fluids prone to breakdown at high temperatures. The DNDASRV948 features high-efficiency solenoid magnetic design for reliable shifting and offers coil connector options rated up to IP69K for robust environmental protection. Its floating style construction minimizes internal binding risks due to installation torque or machining variations. This valve fits into cavity T-31A and has a capacity of 4 gpm (15 L/min). It requires an installation torque of 30\u201335 lbf ft (41\u201347 Nm) and weighs approximately 0.60 lb (0.30 kg).
The Sun Hydraulics DNDASRV948 (Material Number: DNDASRV948) is a solenoid-operated, 4-way, 2-position cartridge valve designed for direct-acting, balanced spool directional control with a soft shift feature. This feature significantly reduces system shock during valve actuation, making it suitable for applications where gentle shifting is preferred. However, it should not be relied upon in scenarios requiring precise timing or ramping control; for such needs, Sun's electro-proportional valves are recommended. The soft shift function increases the response time compared to standard solenoids, with typical response times ranging from 150 ms to 300 ms depending on variables like flow and pressure. For optimal performance, port 1 should maintain positive pressure. The valve includes a push-type manual override control but does not support other manual control options like T or D when using the soft shift feature. It is important to note that the manual override is incompatible with weatherized coils. The solenoid tube assembly is rated for fatigue at 5000 psi (350 bar), employing a wet armature design that exposes working fluid to coil-generated heat\u2014a consideration when using fluids prone to breakdown at high temperatures. The DNDASRV948 features high-efficiency solenoid magnetic design for reliable shifting and offers coil connector options rated up to IP69K for robust environmental protection. Its floating style construction minimizes internal binding risks due to installation torque or machining variations. This valve fits into cavity T-31A and has a capacity of 4 gpm (15 L/min). It requires an installation torque of 30\u201335 lbf ft (41\u201347 Nm) and weighs approximately 0.60 lb (0.30 kg).
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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