SUN HYDRAULICS
DNDASYN812
$182.97 USD
- SUN HYDRAULICS
- Material:DNDASYN812
- Model:DNDA-SYN@812
- 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 DNDASYN812 (DNDASYN812) 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 ideal for applications where minimizing hydraulic shock is crucial. However, this soft shift capability results in increased response time compared to standard solenoids, with typical times ranging from 150 ms to 300 ms depending on various conditions such as flow and pressure. For applications requiring precise timing or ramping control, Sun's electro-proportional valves are recommended instead. The valve operates optimally with port 1 at positive pressure and includes a push-type manual override control for added versatility. Note that other manual controls cannot be ordered with the soft shift but can be installed in the field if needed. The solenoid tube assembly is rated for fatigue at pressures up to 5000 psi (350 bar), and the valve features a wet armature design that allows working fluid exposure to coil-generated heat. This design enhances efficiency but requires consideration of fluid types that may degrade under prolonged heat exposure. Additionally, the Sun Hydraulics DNDASYN812 incorporates floating style construction to reduce internal part binding risks due to installation torque variations. It offers coil connector options rated up to IP69K for enhanced environmental protection. The valve fits into a T-31A cavity and has a capacity of 4 gpm (15 L/min). With its robust construction and high-efficiency solenoid design, this cartridge valve provides reliable shifting performance suitable for various hydraulic systems requiring directional control with reduced actuation shock.
The Sun Hydraulics DNDASYN812 (DNDASYN812) 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 ideal for applications where minimizing hydraulic shock is crucial. However, this soft shift capability results in increased response time compared to standard solenoids, with typical times ranging from 150 ms to 300 ms depending on various conditions such as flow and pressure. For applications requiring precise timing or ramping control, Sun's electro-proportional valves are recommended instead. The valve operates optimally with port 1 at positive pressure and includes a push-type manual override control for added versatility. Note that other manual controls cannot be ordered with the soft shift but can be installed in the field if needed. The solenoid tube assembly is rated for fatigue at pressures up to 5000 psi (350 bar), and the valve features a wet armature design that allows working fluid exposure to coil-generated heat. This design enhances efficiency but requires consideration of fluid types that may degrade under prolonged heat exposure. Additionally, the Sun Hydraulics DNDASYN812 incorporates floating style construction to reduce internal part binding risks due to installation torque variations. It offers coil connector options rated up to IP69K for enhanced environmental protection. The valve fits into a T-31A cavity and has a capacity of 4 gpm (15 L/min). With its robust construction and high-efficiency solenoid design, this cartridge valve provides reliable shifting performance suitable for various hydraulic systems requiring directional control with reduced actuation shock.
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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