SUN HYDRAULICS
DNDASRVHN24AB
$1,389.92 USD
- SUN HYDRAULICS
- Material:DNDASRVHN24AB
- Model:DNDA-SRV-HN@24AB
- 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 DNDASRVHN24AB (DNDASRVHN24AB) is a solenoid-operated, 4-way, 2-position cartridge valve designed for directional control with a balanced spool and a soft shift feature. This feature is specifically engineered to minimize system shock during valve actuation, making it suitable for applications where sudden shifts could cause damage or inefficiency. However, the soft shift results in longer response times compared to standard solenoids, ranging between 150 ms and 300 ms depending on factors such as flow rate, pressure, coil voltage, oil viscosity, and ambient temperature. It is crucial to maintain positive pressure at port 1 for consistent performance. The valve comes with a push-type manual override control but does not support other manual options when the soft shift is enabled. The solenoid tube assembly of this valve is fatigue-rated for service pressures up to 5000 psi (350 bar), ensuring durability under high-pressure conditions. The wet armature design allows the working fluid to cool the armature but requires caution with fluids like water-glycol mixtures that may degrade at high temperatures. The high-efficiency solenoid provides reliable shifting by generating significant spool actuating force per watt expended. This model incorporates Sun's floating style construction to reduce the risk of internal binding due to installation torque or machining variations. It fits into cavity T-31A and has a capacity of 4 gpm (15 L/min). Additional features include coil connector options rated up to IP69K for enhanced environmental protection and compatibility with various weatherized coils and kits. The valve's installation torque ranges from 30-35 lbf ft (41-47 Nm), and it has a model weight of .60 lb (0.30 kg).
The Sun Hydraulics DNDASRVHN24AB (DNDASRVHN24AB) is a solenoid-operated, 4-way, 2-position cartridge valve designed for directional control with a balanced spool and a soft shift feature. This feature is specifically engineered to minimize system shock during valve actuation, making it suitable for applications where sudden shifts could cause damage or inefficiency. However, the soft shift results in longer response times compared to standard solenoids, ranging between 150 ms and 300 ms depending on factors such as flow rate, pressure, coil voltage, oil viscosity, and ambient temperature. It is crucial to maintain positive pressure at port 1 for consistent performance. The valve comes with a push-type manual override control but does not support other manual options when the soft shift is enabled. The solenoid tube assembly of this valve is fatigue-rated for service pressures up to 5000 psi (350 bar), ensuring durability under high-pressure conditions. The wet armature design allows the working fluid to cool the armature but requires caution with fluids like water-glycol mixtures that may degrade at high temperatures. The high-efficiency solenoid provides reliable shifting by generating significant spool actuating force per watt expended. This model incorporates Sun's floating style construction to reduce the risk of internal binding due to installation torque or machining variations. It fits into cavity T-31A and has a capacity of 4 gpm (15 L/min). Additional features include coil connector options rated up to IP69K for enhanced environmental protection and compatibility with various weatherized coils and kits. The valve's installation torque ranges from 30-35 lbf ft (41-47 Nm), and it has a model weight of .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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