SUN HYDRAULICS
DMDASNN812
$161.63 USD
- SUN HYDRAULICS
- Material:DMDASNN812
- Model:DMDA-SNN@812
- 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 DMDASNN812 (DMDASNN812) is a solenoid-operated 3-way, 2-position cartridge valve designed for robust hydraulic system applications. This direct-acting, balanced spool directional valve features a unique soft shift control that moderates the impact of valve actuation, thereby minimizing hydraulic shock. While enhancing system longevity and performance through smoother operations, the soft shift feature does increase response times, typically ranging from 150 ms to 300 ms depending on various factors such as flow rate and oil viscosity. Engineered for versatility, the DMDASNN812 includes a push-type manual override control which is not compatible with weatherized coils but offers flexibility in manual adjustments with an easy field installation option for other manual controls. Its construction incorporates Sun's floating style design to prevent internal part binding and ensure reliable operation even under varying installation conditions or cavity/cartridge machining discrepancies. The valve\u2019s solenoid tube assembly is fatigue rated for up to 5000 psi (350 bar), making it suitable for high-pressure applications. It also supports a maximum flow capacity of 5 gpm (20 L/min) and demonstrates excellent leakage control standards. Additional durability against environmental factors is provided through options like IP69K rated coil connectors and weatherized coil kits. For systems using phosphate ester fluids, cartridges configured with EPDM seals are recommended to avoid damage from petroleum-based fluids. Notably, the wet armature design of this model means that working fluid surrounds the armature which could be a consideration if the coil remains energized over extended periods. The high efficiency of the solenoid design in the DMDASNN812 ensures reliable valve shifting by maximizing spool actuating force per Watt expended, aligning with demanding operational requirements efficiently.
The Sun Hydraulics DMDASNN812 (DMDASNN812) is a solenoid-operated 3-way, 2-position cartridge valve designed for robust hydraulic system applications. This direct-acting, balanced spool directional valve features a unique soft shift control that moderates the impact of valve actuation, thereby minimizing hydraulic shock. While enhancing system longevity and performance through smoother operations, the soft shift feature does increase response times, typically ranging from 150 ms to 300 ms depending on various factors such as flow rate and oil viscosity. Engineered for versatility, the DMDASNN812 includes a push-type manual override control which is not compatible with weatherized coils but offers flexibility in manual adjustments with an easy field installation option for other manual controls. Its construction incorporates Sun's floating style design to prevent internal part binding and ensure reliable operation even under varying installation conditions or cavity/cartridge machining discrepancies. The valve\u2019s solenoid tube assembly is fatigue rated for up to 5000 psi (350 bar), making it suitable for high-pressure applications. It also supports a maximum flow capacity of 5 gpm (20 L/min) and demonstrates excellent leakage control standards. Additional durability against environmental factors is provided through options like IP69K rated coil connectors and weatherized coil kits. For systems using phosphate ester fluids, cartridges configured with EPDM seals are recommended to avoid damage from petroleum-based fluids. Notably, the wet armature design of this model means that working fluid surrounds the armature which could be a consideration if the coil remains energized over extended periods. The high efficiency of the solenoid design in the DMDASNN812 ensures reliable valve shifting by maximizing spool actuating force per Watt expended, aligning with demanding operational requirements efficiently.
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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