SUN HYDRAULICS
DMDASAV748
$169.96 USD
- SUN HYDRAULICS
- Material:DMDASAV748
- Model:DMDA-SAV@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 DMDASAV748 (DMDASAV748) is a solenoid-operated 3-way, 2-position cartridge valve that offers precise control in hydraulic systems. This direct-acting, balanced spool directional valve is designed to handle a maximum operating pressure of 5000 psi (350 bar) and has a flow capacity of up to 5 gpm (20 L/min). It features a soft shift control which helps in reducing shocks caused by valve actuation, making it suitable for applications where shock sensitivity is a concern. However, it's important to note that the soft shift feature increases the response time of the valve, typically ranging from 150 ms to 300 ms depending on various factors such as flow, pressure, coil voltage, oil viscosity, and ambient temperature. The DMDASAV748 includes a push-type manual override control and incorporates Sun\u2019s floating style construction which minimizes internal parts binding. This construction enhances the durability and reliability of the valve under varying installation conditions. The solenoid tube assembly of this model is fatigue rated for high-pressure service and uses EPDM seals specifically for systems with phosphate ester fluids; however, exposure to petroleum-based fluids should be avoided as it can damage the seals. Furthermore, this model boasts a wet armature design where the working fluid surrounds the armature. This design aspect should be considered in applications where the coil may be energized for extended periods as it can affect fluid integrity over time. The valve also features various coil connector options with ratings up to IP69K for enhanced environmental protection against dust and water ingress. Overall, the Sun Hydraulics DMDASAV748 offers robust performance with added features like soft shift and manual override controls tailored for specialized hydraulic applications requiring careful handling of shock and vibrations.
The Sun Hydraulics DMDASAV748 (DMDASAV748) is a solenoid-operated 3-way, 2-position cartridge valve that offers precise control in hydraulic systems. This direct-acting, balanced spool directional valve is designed to handle a maximum operating pressure of 5000 psi (350 bar) and has a flow capacity of up to 5 gpm (20 L/min). It features a soft shift control which helps in reducing shocks caused by valve actuation, making it suitable for applications where shock sensitivity is a concern. However, it's important to note that the soft shift feature increases the response time of the valve, typically ranging from 150 ms to 300 ms depending on various factors such as flow, pressure, coil voltage, oil viscosity, and ambient temperature. The DMDASAV748 includes a push-type manual override control and incorporates Sun\u2019s floating style construction which minimizes internal parts binding. This construction enhances the durability and reliability of the valve under varying installation conditions. The solenoid tube assembly of this model is fatigue rated for high-pressure service and uses EPDM seals specifically for systems with phosphate ester fluids; however, exposure to petroleum-based fluids should be avoided as it can damage the seals. Furthermore, this model boasts a wet armature design where the working fluid surrounds the armature. This design aspect should be considered in applications where the coil may be energized for extended periods as it can affect fluid integrity over time. The valve also features various coil connector options with ratings up to IP69K for enhanced environmental protection against dust and water ingress. Overall, the Sun Hydraulics DMDASAV748 offers robust performance with added features like soft shift and manual override controls tailored for specialized hydraulic applications requiring careful handling of shock and vibrations.
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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