SUN HYDRAULICS
DNDASRV72419
$204.40 USD
Tags:
- SUN HYDRAULICS
- Material:DNDASRV72419
- Model:DNDA-SRV@72419
- 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 DNDASRV72419 (DNDASRV72419) is a solenoid-operated, 4-way, 2-position cartridge valve designed for directional control with a direct-acting, balanced spool and soft shift feature. This soft shift capability minimizes system shock during valve actuation but may not be suitable for applications requiring precise timing control. The cartridge is interchangeable with standard versions but offers lower performance limits. The response time typically ranges from 150 ms to 300 ms, influenced by factors like flow, pressure, coil voltage, oil viscosity, and ambient temperature. For optimal performance, port 1 should maintain positive pressure. This model includes a push-type manual override control; however, it cannot be combined with other manual control options when using the soft shift feature. The solenoid tube assembly is rated for fatigue service at pressures up to 5000 psi (350 bar), utilizing a wet armature design that exposes the working fluid to the heat generated by the coil. This design enhances solenoid efficiency and reliability but requires consideration of fluid types due to potential varnish formation at high temperatures. The valve's construction employs Sun's floating style to reduce the risk of internal part binding from excessive installation torque or machining variations. Additional specifications include a T31A cavity, series 1 classification, and a capacity of 4 gpm (15 L/min). Maximum valve leakage is rated at 10 in\u00b3/min (160 cc/min) at 3000 psi (210 bar). Manual override requires a force of 5 lbs/1000 psi (33 N/100 bar) at port 1 with a stroke of .10 in. (2.5 mm). The solenoid tube diameter is .75 in. (19 mm), and the installation torque ranges from 30 to 35 lbf ft (41 to 47 Nm). The model weighs .60 lb (.30 kg) and comes with an optional Viton seal kit (990431006).
The Sun Hydraulics DNDASRV72419 (DNDASRV72419) is a solenoid-operated, 4-way, 2-position cartridge valve designed for directional control with a direct-acting, balanced spool and soft shift feature. This soft shift capability minimizes system shock during valve actuation but may not be suitable for applications requiring precise timing control. The cartridge is interchangeable with standard versions but offers lower performance limits. The response time typically ranges from 150 ms to 300 ms, influenced by factors like flow, pressure, coil voltage, oil viscosity, and ambient temperature. For optimal performance, port 1 should maintain positive pressure. This model includes a push-type manual override control; however, it cannot be combined with other manual control options when using the soft shift feature. The solenoid tube assembly is rated for fatigue service at pressures up to 5000 psi (350 bar), utilizing a wet armature design that exposes the working fluid to the heat generated by the coil. This design enhances solenoid efficiency and reliability but requires consideration of fluid types due to potential varnish formation at high temperatures. The valve's construction employs Sun's floating style to reduce the risk of internal part binding from excessive installation torque or machining variations. Additional specifications include a T31A cavity, series 1 classification, and a capacity of 4 gpm (15 L/min). Maximum valve leakage is rated at 10 in\u00b3/min (160 cc/min) at 3000 psi (210 bar). Manual override requires a force of 5 lbs/1000 psi (33 N/100 bar) at port 1 with a stroke of .10 in. (2.5 mm). The solenoid tube diameter is .75 in. (19 mm), and the installation torque ranges from 30 to 35 lbf ft (41 to 47 Nm). The model weighs .60 lb (.30 kg) and comes with an optional Viton seal kit (990431006).
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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