SUN HYDRAULICS
DMDASNN648
$158.55 USD
- SUN HYDRAULICS
- Material:DMDASNN648
- Model:DMDA-SNN@648
- 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 DMDASNN648 (DMDASNN648) is a high-performance solenoid-operated 3-way, 2-position cartridge valve designed for hydraulic systems requiring reliable directional control. This direct-acting, balanced spool valve offers a unique soft shift feature that moderates the shock typically associated with valve actuation, making it suitable for applications sensitive to sudden changes in pressure or flow. However, it's important to note that the soft shift does not provide precise timing control, which is crucial in applications needing accurate ramping; for such requirements, Sun Hydraulics suggests considering their electro-proportional valves instead. The DMDASNN648 model is engineered with a push-type manual override and incorporates a wet armature design where the working fluid surrounds the armature. This design choice is crucial as it influences the valve's response time and overall efficiency; typical response times range from 150 ms to 300 ms depending on various factors including flow, pressure, and ambient temperature. The valve\u2019s solenoid tube assembly is fatigue rated for up to 5000 psi (350 bar), ensuring durability even under high-pressure conditions. Additionally, this model features EPDM seals configured specifically for use with phosphate ester fluids; exposure to petroleum-based fluids can damage these seals. The solenoid itself boasts a high-efficiency magnetic design which yields a strong spool actuating force per watt expended, thus enhancing reliability in valve shifting. For environmental protection and compliance with stringent standards, coil connector options rated up to IP69K are available. The Sun Hydraulics DMDASNN648 also benefits from Sun\u2019s floating style construction which minimizes internal parts binding due to installation torque or machining variations in the cavity/cartridge setup. With a maximum operating pressure of 5000 psi and capacity of 5 gpm (20 L/min), this valve stands out for its robust performance in challenging hydraulic applications.
The Sun Hydraulics DMDASNN648 (DMDASNN648) is a high-performance solenoid-operated 3-way, 2-position cartridge valve designed for hydraulic systems requiring reliable directional control. This direct-acting, balanced spool valve offers a unique soft shift feature that moderates the shock typically associated with valve actuation, making it suitable for applications sensitive to sudden changes in pressure or flow. However, it's important to note that the soft shift does not provide precise timing control, which is crucial in applications needing accurate ramping; for such requirements, Sun Hydraulics suggests considering their electro-proportional valves instead. The DMDASNN648 model is engineered with a push-type manual override and incorporates a wet armature design where the working fluid surrounds the armature. This design choice is crucial as it influences the valve's response time and overall efficiency; typical response times range from 150 ms to 300 ms depending on various factors including flow, pressure, and ambient temperature. The valve\u2019s solenoid tube assembly is fatigue rated for up to 5000 psi (350 bar), ensuring durability even under high-pressure conditions. Additionally, this model features EPDM seals configured specifically for use with phosphate ester fluids; exposure to petroleum-based fluids can damage these seals. The solenoid itself boasts a high-efficiency magnetic design which yields a strong spool actuating force per watt expended, thus enhancing reliability in valve shifting. For environmental protection and compliance with stringent standards, coil connector options rated up to IP69K are available. The Sun Hydraulics DMDASNN648 also benefits from Sun\u2019s floating style construction which minimizes internal parts binding due to installation torque or machining variations in the cavity/cartridge setup. With a maximum operating pressure of 5000 psi and capacity of 5 gpm (20 L/min), this valve stands out for its robust performance in challenging hydraulic applications.
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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