SUN HYDRAULICS
DMDALNN728
$227.85 USD
- SUN HYDRAULICS
- Material:DMDALNN728
- Model:DMDA-LNN@728
- 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 DMDALNN728 (DMDALNN728) is a high-performance solenoid-operated 3-way, 2-position cartridge valve designed for rigorous hydraulic applications. This direct-acting, balanced spool directional valve ensures reliable control in various hydraulic systems without the need for minimum hydraulic pressure for operation. It features a robust design with a fatigue rating of 5000 psi (350 bar), making it suitable for demanding environments. The DMDALNN728 valve incorporates closed transitions between positions B and R, enhancing performance by providing faster and more consistent response times, especially useful in pilot control applications where capacity is less critical. The valve's wet armature design allows the working fluid to surround the armature, which is crucial in managing the heat generated by the coil during prolonged energization. However, this may affect fluid integrity over time if exposed to high temperatures frequently. Equipped with EPDM seals, this model is compatible with phosphate ester fluids but should avoid contact with petroleum-based substances to prevent seal damage. The manual override feature included in models with D or L control is designed for temporary actuation and has a mechanical life expectancy of approximately 7,000 cycles. Additionally, the interchangeable coils are compatible with other Sun Series 1 solenoid products and can be mounted in either direction to accommodate different system configurations. Key specifications include a flow capacity of 12 gpm (45 L/min), typical response time of 50 ms, and maximum operating pressure of 5000 psi (350 bar). The valve also features Sun's floating style construction that minimizes internal part binding due to installation variances or machining errors. With these advanced characteristics, the DMDALNN728 offers reliable performance and flexibility for specialized hydraulic applications.
The Sun Hydraulics DMDALNN728 (DMDALNN728) is a high-performance solenoid-operated 3-way, 2-position cartridge valve designed for rigorous hydraulic applications. This direct-acting, balanced spool directional valve ensures reliable control in various hydraulic systems without the need for minimum hydraulic pressure for operation. It features a robust design with a fatigue rating of 5000 psi (350 bar), making it suitable for demanding environments. The DMDALNN728 valve incorporates closed transitions between positions B and R, enhancing performance by providing faster and more consistent response times, especially useful in pilot control applications where capacity is less critical. The valve's wet armature design allows the working fluid to surround the armature, which is crucial in managing the heat generated by the coil during prolonged energization. However, this may affect fluid integrity over time if exposed to high temperatures frequently. Equipped with EPDM seals, this model is compatible with phosphate ester fluids but should avoid contact with petroleum-based substances to prevent seal damage. The manual override feature included in models with D or L control is designed for temporary actuation and has a mechanical life expectancy of approximately 7,000 cycles. Additionally, the interchangeable coils are compatible with other Sun Series 1 solenoid products and can be mounted in either direction to accommodate different system configurations. Key specifications include a flow capacity of 12 gpm (45 L/min), typical response time of 50 ms, and maximum operating pressure of 5000 psi (350 bar). The valve also features Sun's floating style construction that minimizes internal part binding due to installation variances or machining errors. With these advanced characteristics, the DMDALNN728 offers reliable performance and flexibility for specialized hydraulic applications.
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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