SUN HYDRAULICS
DNDASDN528
$183.37 USD
- SUN HYDRAULICS
- Material:DNDASDN528
- Model:DNDA-SDN@528
- 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 DNDASDN528 (DNDASDN528) is a solenoid-operated 4-way, 2-position cartridge valve designed for balanced spool directional control with a soft shift feature. This soft shift capability significantly reduces system shock during valve actuation, although it results in slower response times compared to standard solenoids. The response time typically ranges from 150 ms to 300 ms, depending on factors like flow, pressure, coil voltage, oil viscosity, and ambient temperature. This valve is best suited for applications where timing is not critical. It incorporates a push-type manual override control for added operational flexibility; however, it should be noted that this functionality is not compatible with weatherized coils. The solenoid tube assembly is fatigue rated for service up to 5000 psi (350 bar), ensuring durability under high-pressure conditions. The DNDASDN528 utilizes a wet armature design, exposing the working fluid to heat generated by the coil. This feature necessitates careful consideration of fluid type and operating conditions to prevent varnish formation from fluids such as water-glycol mixtures over prolonged use. The valve's high-efficiency solenoid design delivers substantial spool actuating force per watt expended, enhancing reliability in valve shifting tasks. Sun Hydraulics' floating style construction minimizes internal part binding due to excessive installation torque or cavity machining variations. With a capacity of 4 gpm (15 L/min) and maximum operating pressure of 5000 psi (350 bar), the DNDASDN528 fits into a T-31A cavity and requires an installation torque between 30-35 lbf ft (41-47 Nm). It features a manual override stroke of .10 inches (2.5 mm) and offers various coil connector options rated up to IP69K for robust environmental protection.
The Sun Hydraulics DNDASDN528 (DNDASDN528) is a solenoid-operated 4-way, 2-position cartridge valve designed for balanced spool directional control with a soft shift feature. This soft shift capability significantly reduces system shock during valve actuation, although it results in slower response times compared to standard solenoids. The response time typically ranges from 150 ms to 300 ms, depending on factors like flow, pressure, coil voltage, oil viscosity, and ambient temperature. This valve is best suited for applications where timing is not critical. It incorporates a push-type manual override control for added operational flexibility; however, it should be noted that this functionality is not compatible with weatherized coils. The solenoid tube assembly is fatigue rated for service up to 5000 psi (350 bar), ensuring durability under high-pressure conditions. The DNDASDN528 utilizes a wet armature design, exposing the working fluid to heat generated by the coil. This feature necessitates careful consideration of fluid type and operating conditions to prevent varnish formation from fluids such as water-glycol mixtures over prolonged use. The valve's high-efficiency solenoid design delivers substantial spool actuating force per watt expended, enhancing reliability in valve shifting tasks. Sun Hydraulics' floating style construction minimizes internal part binding due to excessive installation torque or cavity machining variations. With a capacity of 4 gpm (15 L/min) and maximum operating pressure of 5000 psi (350 bar), the DNDASDN528 fits into a T-31A cavity and requires an installation torque between 30-35 lbf ft (41-47 Nm). It features a manual override stroke of .10 inches (2.5 mm) and offers various coil connector options rated up to IP69K for robust environmental protection.
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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