SUN HYDRAULICS
DMDASNN828
$165.30 USD
- SUN HYDRAULICS
- Material:DMDASNN828
- Model:DMDA-SNN@828
- 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 DMDASNN828 (DMDASNN828) is a solenoid-operated 3-way, 2-position cartridge valve designed for high-performance hydraulic systems. This direct-acting, balanced spool directional valve stands out with its soft shift feature, which helps mitigate shock during valve actuation. Although this feature increases response times (typically ranging from 150 ms to 300 ms), it makes the valve less suitable for applications requiring precise timing control. For such needs, Sun Hydraulics recommends considering their electro-proportional valves. The DMDASNN828 is designed to be interchangeable with standard cartridges but offers lower performance limits due to the soft shift design. It operates optimally when port 1 is under positive pressure and includes a push-type manual override control. Notably, other manual control options like T or D are not compatible with the soft shift feature but can be installed in the field if necessary. This model is fatigue rated for up to 5000 psi (350 bar) and features a wet armature design where the working fluid surrounds the armature, potentially affecting function if the coil remains energized over long periods. The valve is particularly efficient due to its unique magnetic design which ensures high spool actuating force per watt expended. Designed for use with phosphate ester fluids, cartridges configured with EPDM seals should avoid exposure to petroleum-based substances that could damage these seals. Additionally, this model incorporates Sun's floating style construction to minimize internal parts binding caused by excessive installation torque or machining variations of cavity/cartridge. With coil connector options rated up to IP69K and additional weatherized coils available for enhanced environmental protection, the DMDASNN828 offers robust solutions for demanding hydraulic applications while ensuring reliable operation and extended durability.
The Sun Hydraulics DMDASNN828 (DMDASNN828) is a solenoid-operated 3-way, 2-position cartridge valve designed for high-performance hydraulic systems. This direct-acting, balanced spool directional valve stands out with its soft shift feature, which helps mitigate shock during valve actuation. Although this feature increases response times (typically ranging from 150 ms to 300 ms), it makes the valve less suitable for applications requiring precise timing control. For such needs, Sun Hydraulics recommends considering their electro-proportional valves. The DMDASNN828 is designed to be interchangeable with standard cartridges but offers lower performance limits due to the soft shift design. It operates optimally when port 1 is under positive pressure and includes a push-type manual override control. Notably, other manual control options like T or D are not compatible with the soft shift feature but can be installed in the field if necessary. This model is fatigue rated for up to 5000 psi (350 bar) and features a wet armature design where the working fluid surrounds the armature, potentially affecting function if the coil remains energized over long periods. The valve is particularly efficient due to its unique magnetic design which ensures high spool actuating force per watt expended. Designed for use with phosphate ester fluids, cartridges configured with EPDM seals should avoid exposure to petroleum-based substances that could damage these seals. Additionally, this model incorporates Sun's floating style construction to minimize internal parts binding caused by excessive installation torque or machining variations of cavity/cartridge. With coil connector options rated up to IP69K and additional weatherized coils available for enhanced environmental protection, the DMDASNN828 offers robust solutions for demanding hydraulic applications while ensuring reliable operation and extended durability.
This solenoid-operated 3-way, 2-position cartridge is a direct-acting, balanced spool directional valve.
- 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 dependent 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.
- Cartridges configured with EPDM seals are for use in systems with phosphate ester fluids. Exposure to petroleum based fluids, greases and lubricants will damage the seals.
- 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-11A |
| Series | 1 |
| Capacity | 5 gpm20 L/min. |
| Maximum Operating Pressure | 5000 psi350 bar |
| Maximum Valve Leakage at 110 SUS (24 cSt) | 5 in³/min.@3000 psi80 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: 990-411-006 |
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