SUN HYDRAULICS
DMDALNN748
$227.85 USD
- SUN HYDRAULICS
- Material:DMDALNN748
- Model:DMDA-LNN@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 DMDALNN748 (DMDALNN748) is a high-performance, solenoid-operated 3-way, 2-position cartridge valve designed for use in hydraulic systems. This direct-acting, balanced spool directional valve is characterized by its robust construction and capability to handle a maximum operating pressure of 5000 psi (350 bar), making it suitable for demanding applications. The valve features a closed transition between positions B and R, enhancing performance by ensuring faster and more consistent response times, particularly beneficial when used as pilot controls. The DMDALNN748 is designed with a wet armature setup, where the working fluid surrounds the armature. This design consideration is crucial for applications where the coil may be energized for extended periods, potentially affecting fluid integrity due to heat exposure. The valve's compatibility with EPDM seals makes it appropriate for systems utilizing phosphate ester fluids; however, these seals must not be exposed to petroleum-based fluids to avoid damage. Additionally, this model incorporates interchangeable coils with other Sun Series 1 solenoid products and supports manual override through a detent mechanism intended for temporary actuation. It offers a flow capacity of up to 12 gpm (45 L/min) and features Sun\u2019s floating style construction which minimizes internal part binding due to installation torque or cavity/cartridge machining variations. With its rapid response time typically around 50 ms and capability to withstand switching frequencies up to 15,000 cycles per hour, the DMDALNN748 provides reliable and efficient operation in hydraulic systems requiring precise control over fluid direction and flow.
The Sun Hydraulics DMDALNN748 (DMDALNN748) is a high-performance, solenoid-operated 3-way, 2-position cartridge valve designed for use in hydraulic systems. This direct-acting, balanced spool directional valve is characterized by its robust construction and capability to handle a maximum operating pressure of 5000 psi (350 bar), making it suitable for demanding applications. The valve features a closed transition between positions B and R, enhancing performance by ensuring faster and more consistent response times, particularly beneficial when used as pilot controls. The DMDALNN748 is designed with a wet armature setup, where the working fluid surrounds the armature. This design consideration is crucial for applications where the coil may be energized for extended periods, potentially affecting fluid integrity due to heat exposure. The valve's compatibility with EPDM seals makes it appropriate for systems utilizing phosphate ester fluids; however, these seals must not be exposed to petroleum-based fluids to avoid damage. Additionally, this model incorporates interchangeable coils with other Sun Series 1 solenoid products and supports manual override through a detent mechanism intended for temporary actuation. It offers a flow capacity of up to 12 gpm (45 L/min) and features Sun\u2019s floating style construction which minimizes internal part binding due to installation torque or cavity/cartridge machining variations. With its rapid response time typically around 50 ms and capability to withstand switching frequencies up to 15,000 cycles per hour, the DMDALNN748 provides reliable and efficient operation in hydraulic systems requiring precise control over fluid direction and flow.
This solenoid-operated 3-way, 2-position cartridge is a direct-acting, balanced spool directional valve.
- The solenoid tube assembly is fatigue rated for 5000 psi (350 bar) service.
- Spools B and R are closed in the transition between their two positions. This results in a higher performance limit at the expense of lower capacity. When used as pilot controls, where capacity is not a factor, the closed transition will provide faster and more consistent response times.
- This valve is direct actuated and requires no minimum hydraulic pressure for operation.
- On models equipped with the D or L control, the detent mechanism in the manual override is meant for temporary actuation. The D, L and T manual control assembly has a mechanical life expectancy of approximately 7,000 cycles.
- 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.
- Coils are interchangeable with other Sun Series 1 solenoid products and can be mounted on the tube in either direction.
- 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 | 12 gpm45 L/min. |
| Maximum Operating Pressure | 5000 psi350 bar |
| Response Time - Typical | 50 ms50 ms |
| Maximum Valve Leakage at 110 SUS (24 cSt) | 5 in³/min.@3000 psi80 cc/min.@210 bar |
| Switching Frequency | 15000 cycles/hr15000 cycles/hr |
| 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 |
| Seal and nut kit - Coil | Viton: 990-770-006Viton: 990-770-006 |
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