SUN HYDRAULICS
DMDALRN812N
$226.86 USD
- SUN HYDRAULICS
- Material:DMDALRN812N
- Model:DMDA-LRN@812N
- 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 DMDALRN812N (DMDALRN812N) is a high-performance solenoid-operated 3-way, 2-position cartridge valve designed for robust hydraulic system applications. This direct-acting, balanced spool directional valve features a fatigue rating for up to 5000 psi (350 bar), making it suitable for high-pressure environments. Its construction includes a closed transition between Spools B and R, optimizing performance by providing faster and more consistent response times, especially in pilot control applications where capacity is less critical. The DMDALRN812N operates without requiring a minimum hydraulic pressure, enhancing its versatility across various hydraulic systems. It incorporates manual override options with a detent mechanism designed for temporary actuation, supporting up to approximately 7,000 cycles. This model 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. A notable feature of this valve is its wet armature design wherein the working fluid surrounds the armature. This design consideration is crucial when the coil is energized for extended periods as it affects fluid integrity due to heat exposure. The valve supports a flow capacity of up to 12 gpm (45 L/min) and offers quick response times typically around 50 ms. Additionally, the DMDALRN812N facilitates easy maintenance and compatibility with other Sun Series 1 solenoid products due to interchangeable coils that can be mounted in either direction on the tube. It also features Sun\u2019s floating style construction which minimizes internal parts binding caused by excessive installation torque or variations in cavity/cartridge machining. This model\u2019s robust design and versatile features make it an excellent choice for demanding hydraulic applications requiring reliable directional control and swift actuation.
The Sun Hydraulics DMDALRN812N (DMDALRN812N) is a high-performance solenoid-operated 3-way, 2-position cartridge valve designed for robust hydraulic system applications. This direct-acting, balanced spool directional valve features a fatigue rating for up to 5000 psi (350 bar), making it suitable for high-pressure environments. Its construction includes a closed transition between Spools B and R, optimizing performance by providing faster and more consistent response times, especially in pilot control applications where capacity is less critical. The DMDALRN812N operates without requiring a minimum hydraulic pressure, enhancing its versatility across various hydraulic systems. It incorporates manual override options with a detent mechanism designed for temporary actuation, supporting up to approximately 7,000 cycles. This model 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. A notable feature of this valve is its wet armature design wherein the working fluid surrounds the armature. This design consideration is crucial when the coil is energized for extended periods as it affects fluid integrity due to heat exposure. The valve supports a flow capacity of up to 12 gpm (45 L/min) and offers quick response times typically around 50 ms. Additionally, the DMDALRN812N facilitates easy maintenance and compatibility with other Sun Series 1 solenoid products due to interchangeable coils that can be mounted in either direction on the tube. It also features Sun\u2019s floating style construction which minimizes internal parts binding caused by excessive installation torque or variations in cavity/cartridge machining. This model\u2019s robust design and versatile features make it an excellent choice for demanding hydraulic applications requiring reliable directional control and swift actuation.
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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