SUN HYDRAULICS
DMDASRV812
$170.80 USD
Tags:
- SUN HYDRAULICS
- Material:DMDASRV812
- Model:DMDA-SRV@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 DMDASRV812 (DMDASRV812) is a solenoid-operated 3-way, 2-position cartridge valve notable for its direct-acting, balanced spool directional control capabilities. Engineered with a soft shift feature, this valve is designed to mitigate shock resulting from valve actuation, although it is not recommended for applications requiring precise timing or ramping controls. Instead, for such needs, electroproportional valves might be better suited. This model incorporates a push-type manual override control and boasts an innovative magnetic design that enhances the efficiency of the solenoid, providing strong spool actuating force per watt expended. This contributes to reliable valve shifting even under varied conditions. The valve operates optimally at pressures up to 5000 psi (350 bar) and can handle flow rates up to 5 gpm (20 L/min). It also features a wet armature design where the working fluid surrounds the armature, potentially affecting fluid integrity during prolonged energization due to heat exposure. The DMDASRV812 is equipped with EPDM seals suitable for systems using phosphate ester fluids; however, these seals are susceptible to damage by petroleum-based substances. The solenoid tube assembly of this model is fatigue rated for high-pressure service up to 5000 psi (350 bar), ensuring durability and long-term performance. For environmental protection and enhanced durability in various operating conditions, additional weatherized coils and kits are available. The construction of the DMDASRV812 utilizes Sun\u2019s floating style which minimizes internal part binding caused by excessive installation torque or cavity/cartridge machining variations. This feature ensures consistent operation and longevity of the valve system in demanding applications.
The Sun Hydraulics DMDASRV812 (DMDASRV812) is a solenoid-operated 3-way, 2-position cartridge valve notable for its direct-acting, balanced spool directional control capabilities. Engineered with a soft shift feature, this valve is designed to mitigate shock resulting from valve actuation, although it is not recommended for applications requiring precise timing or ramping controls. Instead, for such needs, electroproportional valves might be better suited. This model incorporates a push-type manual override control and boasts an innovative magnetic design that enhances the efficiency of the solenoid, providing strong spool actuating force per watt expended. This contributes to reliable valve shifting even under varied conditions. The valve operates optimally at pressures up to 5000 psi (350 bar) and can handle flow rates up to 5 gpm (20 L/min). It also features a wet armature design where the working fluid surrounds the armature, potentially affecting fluid integrity during prolonged energization due to heat exposure. The DMDASRV812 is equipped with EPDM seals suitable for systems using phosphate ester fluids; however, these seals are susceptible to damage by petroleum-based substances. The solenoid tube assembly of this model is fatigue rated for high-pressure service up to 5000 psi (350 bar), ensuring durability and long-term performance. For environmental protection and enhanced durability in various operating conditions, additional weatherized coils and kits are available. The construction of the DMDASRV812 utilizes Sun\u2019s floating style which minimizes internal part binding caused by excessive installation torque or cavity/cartridge machining variations. This feature ensures consistent operation and longevity of the valve system in demanding 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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