SUN HYDRAULICS
DMDASRV228
$167.28 USD
- SUN HYDRAULICS
- Material:DMDASRV228
- Model:DMDA-SRV@228
- 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 DMDASRV228 (DMDASRV228) is a high-performance, solenoid-operated 3-way, 2-position cartridge valve. This direct-acting, balanced spool directional valve features a unique soft shift functionality designed to mitigate shock from valve actuation. Although beneficial for reducing system shocks, the soft shift feature is not recommended for applications requiring precise timing control, such as those needing accurate ramping or timing adjustments, where electro-proportional valves would be more suitable. This model's response time varies between 150 ms and 300 ms depending on several factors including flow, pressure, coil voltage, oil viscosity, and ambient temperature. It is essential that port 1 maintains positive pressure to ensure consistent performance of the soft shift mechanism. The valve also includes a push-type manual override control which is not compatible with weatherized coils but can be altered with other manual controls in the field if necessary. Constructed to handle up to 5000 psi (350 bar), the solenoid tube assembly of the DMDASRV228 is fatigue rated for robust performance. The cartridge uses EPDM seals suitable for systems with phosphate ester fluids; however, exposure to petroleum-based fluids should be avoided as it can damage the seals. Additionally, its wet armature design means that the working fluid surrounds the armature which could be a consideration if the coil remains energized for extended periods. This model also benefits from Sun Hydraulics' floating style construction which minimizes internal part binding due to installation torque or cavity/cartridge machining variations. With a maximum operating capacity of 5 gpm (20 L/min) and maximum operating pressure of 5000 psi (350 bar), this valve ensures reliable and efficient performance across various applications. The design also incorporates multiple coil connector options with ratings up to IP69K for enhanced environmental protection.
The Sun Hydraulics DMDASRV228 (DMDASRV228) is a high-performance, solenoid-operated 3-way, 2-position cartridge valve. This direct-acting, balanced spool directional valve features a unique soft shift functionality designed to mitigate shock from valve actuation. Although beneficial for reducing system shocks, the soft shift feature is not recommended for applications requiring precise timing control, such as those needing accurate ramping or timing adjustments, where electro-proportional valves would be more suitable. This model's response time varies between 150 ms and 300 ms depending on several factors including flow, pressure, coil voltage, oil viscosity, and ambient temperature. It is essential that port 1 maintains positive pressure to ensure consistent performance of the soft shift mechanism. The valve also includes a push-type manual override control which is not compatible with weatherized coils but can be altered with other manual controls in the field if necessary. Constructed to handle up to 5000 psi (350 bar), the solenoid tube assembly of the DMDASRV228 is fatigue rated for robust performance. The cartridge uses EPDM seals suitable for systems with phosphate ester fluids; however, exposure to petroleum-based fluids should be avoided as it can damage the seals. Additionally, its wet armature design means that the working fluid surrounds the armature which could be a consideration if the coil remains energized for extended periods. This model also benefits from Sun Hydraulics' floating style construction which minimizes internal part binding due to installation torque or cavity/cartridge machining variations. With a maximum operating capacity of 5 gpm (20 L/min) and maximum operating pressure of 5000 psi (350 bar), this valve ensures reliable and efficient performance across various applications. The design also incorporates multiple coil connector options with ratings up to IP69K for enhanced environmental protection.
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 |
Show FAQ