SUN HYDRAULICS
DNDASYV728
$192.31 USD
- SUN HYDRAULICS
- Material:DNDASYV728
- Model:DNDA-SYV@728
- 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 DNDASYV728 (DNDASYV728) is a solenoid-operated, 4-way, 2-position cartridge valve designed with a direct-acting, balanced spool and a soft shift feature to minimize system shock during valve actuation. This soft shift mechanism is beneficial in reducing shock but may not be suitable for applications requiring precise timing control. For such needs, Sun's electroproportional valves are recommended. The response time of the soft shift feature varies between 150 ms to 300 ms depending on factors like flow rate, pressure, coil voltage, oil viscosity, and ambient temperature. The valve operates optimally with port 1 at positive pressure and includes a push-type manual override control. However, this manual override is incompatible with weatherized coils. The solenoid tube assembly is rated for fatigue at 5000 psi (350 bar), utilizing a wet armature design that exposes the working fluid to coil heat\u2014potentially impacting certain fluids like water-glycol mixtures over time. This high-efficiency solenoid design ensures reliable valve shifting with significant spool actuating force per watt expended. With coil connector options rated up to IP69K, additional weatherized coils and kits are available for enhanced environmental protection. The Sun floating style construction minimizes the risk of internal part binding due to installation torque or machining variations in cavity/cartridge interfaces. The DNDASYV728 fits into a T-31A cavity and belongs to Series 1 with a capacity of 4 gpm (15 L/min). It can handle maximum operating pressures of up to 5000 psi (350 bar) with minimal leakage at specified conditions. The valve features dimensions including a solenoid tube diameter of .75 inches (19 mm), hex size of .78 inches (22.2 mm), and requires an installation torque between 30-35 lbf ft (41-47 Nm). It weighs approximately .60 lb (.30 kg) and uses Viton seals in its cartridge assembly.
The Sun Hydraulics DNDASYV728 (DNDASYV728) is a solenoid-operated, 4-way, 2-position cartridge valve designed with a direct-acting, balanced spool and a soft shift feature to minimize system shock during valve actuation. This soft shift mechanism is beneficial in reducing shock but may not be suitable for applications requiring precise timing control. For such needs, Sun's electroproportional valves are recommended. The response time of the soft shift feature varies between 150 ms to 300 ms depending on factors like flow rate, pressure, coil voltage, oil viscosity, and ambient temperature. The valve operates optimally with port 1 at positive pressure and includes a push-type manual override control. However, this manual override is incompatible with weatherized coils. The solenoid tube assembly is rated for fatigue at 5000 psi (350 bar), utilizing a wet armature design that exposes the working fluid to coil heat\u2014potentially impacting certain fluids like water-glycol mixtures over time. This high-efficiency solenoid design ensures reliable valve shifting with significant spool actuating force per watt expended. With coil connector options rated up to IP69K, additional weatherized coils and kits are available for enhanced environmental protection. The Sun floating style construction minimizes the risk of internal part binding due to installation torque or machining variations in cavity/cartridge interfaces. The DNDASYV728 fits into a T-31A cavity and belongs to Series 1 with a capacity of 4 gpm (15 L/min). It can handle maximum operating pressures of up to 5000 psi (350 bar) with minimal leakage at specified conditions. The valve features dimensions including a solenoid tube diameter of .75 inches (19 mm), hex size of .78 inches (22.2 mm), and requires an installation torque between 30-35 lbf ft (41-47 Nm). It weighs approximately .60 lb (.30 kg) and uses Viton seals in its cartridge assembly.
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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