SUN HYDRAULICS
DNDASUN648
$143.70 USD
Tags:
- SUN HYDRAULICS
- Material:DNDASUN648
- Model:DNDA-SUN@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 DNDASUN648 (DNDASUN648) 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 minimize system shock during valve actuation, although it may not be suitable for applications requiring precise timing control. For such cases, Sun's electro-proportional valves are recommended. The soft shift design does extend response time compared to standard solenoids, with typical times ranging from 150 ms to 300 ms depending on variables like flow, pressure, and temperature. The valve operates optimally with port 1 maintained at positive pressure to ensure consistent performance. This cartridge includes a push-type manual override control but cannot accommodate other manual control options like T or D with the soft shift feature; however, these can be installed in the field if necessary. It's important to note that manual override functionality is not compatible with weatherized coils. The solenoid tube assembly is rated for fatigue at pressures up to 5000 psi (350 bar), utilizing a wet armature design that allows working fluid exposure to coil-generated heat\u2014an important consideration for applications involving long coil energization periods. The solenoid's magnetic design ensures high efficiency by maximizing spool actuating force per watt expended. Available coil connector options provide protection ratings up to IP69K for enhanced environmental resilience. Incorporating Sun\u2019s floating style construction reduces the risk of internal component binding due to excessive installation torque or machining variations in the cavity/cartridge interface. With a capacity of 4 gpm (15 L/min) and maximum leakage at 10 in\u00b3/min (160 cc/min) under specified conditions, this valve offers reliable performance across various hydraulic applications.
The Sun Hydraulics DNDASUN648 (DNDASUN648) 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 minimize system shock during valve actuation, although it may not be suitable for applications requiring precise timing control. For such cases, Sun's electro-proportional valves are recommended. The soft shift design does extend response time compared to standard solenoids, with typical times ranging from 150 ms to 300 ms depending on variables like flow, pressure, and temperature. The valve operates optimally with port 1 maintained at positive pressure to ensure consistent performance. This cartridge includes a push-type manual override control but cannot accommodate other manual control options like T or D with the soft shift feature; however, these can be installed in the field if necessary. It's important to note that manual override functionality is not compatible with weatherized coils. The solenoid tube assembly is rated for fatigue at pressures up to 5000 psi (350 bar), utilizing a wet armature design that allows working fluid exposure to coil-generated heat\u2014an important consideration for applications involving long coil energization periods. The solenoid's magnetic design ensures high efficiency by maximizing spool actuating force per watt expended. Available coil connector options provide protection ratings up to IP69K for enhanced environmental resilience. Incorporating Sun\u2019s floating style construction reduces the risk of internal component binding due to excessive installation torque or machining variations in the cavity/cartridge interface. With a capacity of 4 gpm (15 L/min) and maximum leakage at 10 in\u00b3/min (160 cc/min) under specified conditions, this valve offers reliable performance across various hydraulic applications.
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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