SUN HYDRAULICS
DNDASYN228
$182.00 USD
Tags:
- SUN HYDRAULICS
- Material:DNDASYN228
- Model:DNDA-SYN@228
- 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 DNDASYN228 (DNDASYN228) is a solenoid-operated, 4-way, 2-position cartridge valve designed for directional control with a soft shift feature to minimize system shock during actuation. This direct-acting, balanced spool valve is suitable for applications where reducing hydraulic shock is essential, though it should not be used in scenarios demanding precise timing. The soft shift mechanism increases response time compared to standard solenoids, with typical response times ranging from 150 to 300 milliseconds depending on factors such as flow rate, pressure, coil voltage, oil viscosity, and ambient temperature. For optimal performance, port 1 should maintain positive pressure. The valve incorporates a push-type manual override control and features a fatigue-rated solenoid tube assembly for service up to 5000 psi (350 bar). It employs a wet armature design that exposes the working fluid to coil-generated heat; this may affect certain fluids like water-glycol mixtures over time due to varnish formation. The solenoid's magnetic design ensures high efficiency and reliable shifting by maximizing spool actuating force per watt expended. Additional features include coil connector options rated up to IP69K for enhanced environmental protection and compatibility with weatherized coils. The Sun floating style construction minimizes internal part binding risks due to excessive installation torque or machining variations in the cavity or cartridge. It fits into T31A cavities and belongs to Series 1 with a capacity of 4 gpm (15 L/min). Key specifications include a maximum valve leakage of 10 in\u00b3/min (3000 psi) and manual override requirements of 5 lbs/1000 psi at Port 1. Installation torque ranges from 30-35 lbf ft (41-47 Nm), with the model weighing approximately .60 lb (.30 kg).
The Sun Hydraulics DNDASYN228 (DNDASYN228) is a solenoid-operated, 4-way, 2-position cartridge valve designed for directional control with a soft shift feature to minimize system shock during actuation. This direct-acting, balanced spool valve is suitable for applications where reducing hydraulic shock is essential, though it should not be used in scenarios demanding precise timing. The soft shift mechanism increases response time compared to standard solenoids, with typical response times ranging from 150 to 300 milliseconds depending on factors such as flow rate, pressure, coil voltage, oil viscosity, and ambient temperature. For optimal performance, port 1 should maintain positive pressure. The valve incorporates a push-type manual override control and features a fatigue-rated solenoid tube assembly for service up to 5000 psi (350 bar). It employs a wet armature design that exposes the working fluid to coil-generated heat; this may affect certain fluids like water-glycol mixtures over time due to varnish formation. The solenoid's magnetic design ensures high efficiency and reliable shifting by maximizing spool actuating force per watt expended. Additional features include coil connector options rated up to IP69K for enhanced environmental protection and compatibility with weatherized coils. The Sun floating style construction minimizes internal part binding risks due to excessive installation torque or machining variations in the cavity or cartridge. It fits into T31A cavities and belongs to Series 1 with a capacity of 4 gpm (15 L/min). Key specifications include a maximum valve leakage of 10 in\u00b3/min (3000 psi) and manual override requirements of 5 lbs/1000 psi at Port 1. Installation torque ranges from 30-35 lbf ft (41-47 Nm), with the model weighing approximately .60 lb (.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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