SUN HYDRAULICS
DMDASRV628
$166.49 USD
- SUN HYDRAULICS
- Material:DMDASRV628
- Model:DMDA-SRV@628
- 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 DMDASRV628 (DMDASRV628) is a solenoid-operated 3-way, 2-position cartridge valve featuring direct-acting, balanced spool directional control with soft shift capabilities. Designed to fit in a T11A cavity and part of Series 1, this model is engineered with a focus on minimizing hydraulic shock during valve actuation. The soft shift feature significantly lengthens the response time compared to standard solenoids, typically ranging from 150 ms to 300 ms depending on various factors such as flow, pressure, coil voltage, oil viscosity, and ambient temperature. This valve is specifically configured for use with phosphate ester fluids when equipped with EPDM seals; however, it should not be exposed to petroleum-based fluids which can damage the seals. The wet armature design of the solenoid allows the working fluid to surround the armature which may be a consideration if the coil remains energized for extended periods. This design choice impacts fluid integrity over time especially in applications using water-glycol mixtures. The DMDASRV628 supports manual override functionality through a push-type control but is incompatible with weatherized coils for this feature. It offers multiple coil connector options up to IP69K for enhanced environmental protection. The structural integrity is reinforced by Sun\u2019s floating style construction which helps prevent internal parts binding due to installation stresses or machining variations. Key specifications include a maximum operating pressure of 5000 psi (350 bar), flow capacity up to 5 gpm (20 L/min), and maximum valve leakage at 3000 psi rated at 5 in\u00b3/min (80 cc/min). The manual override requires an actuation force of about 5 lbs at 1000 psi for port 1. This model weighs approximately 0.60 lb (0.30 kg) and comes with an installation torque recommendation between 30-35 lbf\u00b7ft (41-47 Nm).
The Sun Hydraulics DMDASRV628 (DMDASRV628) is a solenoid-operated 3-way, 2-position cartridge valve featuring direct-acting, balanced spool directional control with soft shift capabilities. Designed to fit in a T11A cavity and part of Series 1, this model is engineered with a focus on minimizing hydraulic shock during valve actuation. The soft shift feature significantly lengthens the response time compared to standard solenoids, typically ranging from 150 ms to 300 ms depending on various factors such as flow, pressure, coil voltage, oil viscosity, and ambient temperature. This valve is specifically configured for use with phosphate ester fluids when equipped with EPDM seals; however, it should not be exposed to petroleum-based fluids which can damage the seals. The wet armature design of the solenoid allows the working fluid to surround the armature which may be a consideration if the coil remains energized for extended periods. This design choice impacts fluid integrity over time especially in applications using water-glycol mixtures. The DMDASRV628 supports manual override functionality through a push-type control but is incompatible with weatherized coils for this feature. It offers multiple coil connector options up to IP69K for enhanced environmental protection. The structural integrity is reinforced by Sun\u2019s floating style construction which helps prevent internal parts binding due to installation stresses or machining variations. Key specifications include a maximum operating pressure of 5000 psi (350 bar), flow capacity up to 5 gpm (20 L/min), and maximum valve leakage at 3000 psi rated at 5 in\u00b3/min (80 cc/min). The manual override requires an actuation force of about 5 lbs at 1000 psi for port 1. This model weighs approximately 0.60 lb (0.30 kg) and comes with an installation torque recommendation between 30-35 lbf\u00b7ft (41-47 Nm).
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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