SUN HYDRAULICS
DMDASNV748
$169.96 USD
- SUN HYDRAULICS
- Material:DMDASNV748
- Model:DMDA-SNV@748
- 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 DMDASNV748 (DMDASNV748) is a high-performance, solenoid-operated 3-way, 2-position cartridge valve designed for hydraulic systems. This direct-acting, balanced spool directional valve is distinguished by its soft shift feature which significantly reduces shock from valve actuation. Although this feature increases response times (ranging from 150 ms to 300 ms), it aids in smoother transitions and can be crucial in applications sensitive to shock but less critical on timing precision. For applications demanding precise control over ramping or timing, alternative solutions such as Sun's electro-proportional valves are recommended. The DMDASNV748 valve operates optimally when port 1 maintains positive pressure and includes a push-type manual override control. Notably, the manual override function is incompatible with weatherized coils, offering an additional layer of operational flexibility through field-installable manual control options. With a maximum operating pressure of 5000 psi (350 bar) and a capacity of up to 5 gpm (20 L/min), this valve handles substantial flow rates efficiently. Moreover, the design incorporates Sun's floating style construction which minimizes internal part binding risks that can occur due to excessive installation torque or cavity/cartridge machining variations. The solenoid tube assembly of the valve is fatigue rated for high-pressure service, ensuring durability and reliability in demanding environments. For systems utilizing phosphate ester fluids, cartridges configured with EPDM seals are available; however, these are not suitable for exposure to petroleum-based fluids which can damage the seals. The solenoid\u2019s unique magnetic design ensures high efficiency and effective spool actuating force per watt expended, facilitating reliable valve shifting even under varied environmental conditions with coil connector options providing up to IP69K rating for enhanced protection.
The Sun Hydraulics DMDASNV748 (DMDASNV748) is a high-performance, solenoid-operated 3-way, 2-position cartridge valve designed for hydraulic systems. This direct-acting, balanced spool directional valve is distinguished by its soft shift feature which significantly reduces shock from valve actuation. Although this feature increases response times (ranging from 150 ms to 300 ms), it aids in smoother transitions and can be crucial in applications sensitive to shock but less critical on timing precision. For applications demanding precise control over ramping or timing, alternative solutions such as Sun's electro-proportional valves are recommended. The DMDASNV748 valve operates optimally when port 1 maintains positive pressure and includes a push-type manual override control. Notably, the manual override function is incompatible with weatherized coils, offering an additional layer of operational flexibility through field-installable manual control options. With a maximum operating pressure of 5000 psi (350 bar) and a capacity of up to 5 gpm (20 L/min), this valve handles substantial flow rates efficiently. Moreover, the design incorporates Sun's floating style construction which minimizes internal part binding risks that can occur due to excessive installation torque or cavity/cartridge machining variations. The solenoid tube assembly of the valve is fatigue rated for high-pressure service, ensuring durability and reliability in demanding environments. For systems utilizing phosphate ester fluids, cartridges configured with EPDM seals are available; however, these are not suitable for exposure to petroleum-based fluids which can damage the seals. The solenoid\u2019s unique magnetic design ensures high efficiency and effective spool actuating force per watt expended, facilitating reliable valve shifting even under varied environmental conditions with coil connector options providing up to IP69K rating for enhanced 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 |
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