SUN HYDRAULICS
DMDASAN728
$162.02 USD
- SUN HYDRAULICS
- Material:DMDASAN728
- Model:DMDA-SAN@728
- 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 DMDASAN728 (DMDASAN728) is a solenoid-operated 3-way, 2-position cartridge valve that integrates a direct-acting, balanced spool directional control with unique soft shift capabilities. This feature is specifically designed to mitigate hydraulic shock during valve actuation, enhancing the smooth operation of hydraulic systems. However, it is important to note that the soft shift model does not provide precise timing control, which may be critical in certain applications; for such needs, Sun Hydraulics suggests considering their electro-proportional valves instead. The DMDASAN728 exhibits a response time ranging from 150 ms to 300 ms depending on various factors such as flow rate, pressure, coil voltage, oil viscosity, and ambient temperature. It is crucial for consistent performance that port 1 maintains positive pressure. The valve also includes a push-type manual override control which offers additional operational flexibility; however, this manual override is not compatible with weatherized coils. Constructed for durability and reliability under high-pressure conditions up to 5000 psi (350 bar), the solenoid tube assembly of this model is fatigue rated. Additionally, it features EPDM seals suitable for use with phosphate ester fluids but incompatible with petroleum-based fluids which could cause damage. The wet armature design of the solenoid allows the working fluid to surround the armature which could lead to heat-related degradation of some fluids over extended periods. This model also incorporates Sun's floating style construction which minimizes internal parts binding due to excessive installation torque or variations in cavity/cartridge machining. With an array of coil connector options providing environmental protection ratings up to IP69K and additional weatherized coils available for enhanced environmental safeguarding, the DMDASAN728 offers robust performance and flexibility suited for diverse hydraulic applications.
The Sun Hydraulics DMDASAN728 (DMDASAN728) is a solenoid-operated 3-way, 2-position cartridge valve that integrates a direct-acting, balanced spool directional control with unique soft shift capabilities. This feature is specifically designed to mitigate hydraulic shock during valve actuation, enhancing the smooth operation of hydraulic systems. However, it is important to note that the soft shift model does not provide precise timing control, which may be critical in certain applications; for such needs, Sun Hydraulics suggests considering their electro-proportional valves instead. The DMDASAN728 exhibits a response time ranging from 150 ms to 300 ms depending on various factors such as flow rate, pressure, coil voltage, oil viscosity, and ambient temperature. It is crucial for consistent performance that port 1 maintains positive pressure. The valve also includes a push-type manual override control which offers additional operational flexibility; however, this manual override is not compatible with weatherized coils. Constructed for durability and reliability under high-pressure conditions up to 5000 psi (350 bar), the solenoid tube assembly of this model is fatigue rated. Additionally, it features EPDM seals suitable for use with phosphate ester fluids but incompatible with petroleum-based fluids which could cause damage. The wet armature design of the solenoid allows the working fluid to surround the armature which could lead to heat-related degradation of some fluids over extended periods. This model also incorporates Sun's floating style construction which minimizes internal parts binding due to excessive installation torque or variations in cavity/cartridge machining. With an array of coil connector options providing environmental protection ratings up to IP69K and additional weatherized coils available for enhanced environmental safeguarding, the DMDASAN728 offers robust performance and flexibility suited for diverse 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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