SUN HYDRAULICS
DMDALNV828
$239.07 USD
- SUN HYDRAULICS
- Material:DMDALNV828
- Model:DMDA-LNV@828
- 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 DMDALNV828 (DMDALNV828) is a solenoid-operated 3-way, 2-position cartridge valve designed for high-performance hydraulic systems. This direct-acting, balanced spool directional valve is characterized by its robust build and efficient operation. It features a solenoid tube assembly that is fatigue rated for 5000 psi (350 bar), making it suitable for demanding applications. The valve operates with closed transitions between spools B and R, enhancing performance by ensuring faster and more consistent response times, particularly useful in pilot control applications where capacity is less critical. The DMDALNV828 requires no minimum hydraulic pressure to function due to its direct actuation mechanism. It incorporates manual override options with detent mechanisms designed for temporary actuation, boasting a mechanical life expectancy of approximately 7,000 cycles. This model uses EPDM seals suitable for phosphate ester fluids; however, these seals must avoid exposure to petroleum-based fluids which can cause damage. Another notable feature of the DMDALNV828 is its wet armature design allowing the working fluid to surround the armature, thus being exposed to heat generated by the coil which may affect fluid integrity over prolonged periods. The valve supports interchangeable coils with other Sun Series 1 solenoid products and offers versatility in mounting orientation. Additionally, this model utilizes Sun's floating style construction which minimizes internal parts binding from excessive installation torque or machining variations in cavity-cartridge setups. With a flow capacity of up to 12 gpm (45 L/min) and maximum operating pressure of 5000 psi (350 bar), along with rapid typical response times of 50 ms and switching frequency up to 15000 cycles/hr, the DMDALNV828 is an excellent choice for high-stress hydraulic environments requiring precise control and reliability.
The Sun Hydraulics DMDALNV828 (DMDALNV828) is a solenoid-operated 3-way, 2-position cartridge valve designed for high-performance hydraulic systems. This direct-acting, balanced spool directional valve is characterized by its robust build and efficient operation. It features a solenoid tube assembly that is fatigue rated for 5000 psi (350 bar), making it suitable for demanding applications. The valve operates with closed transitions between spools B and R, enhancing performance by ensuring faster and more consistent response times, particularly useful in pilot control applications where capacity is less critical. The DMDALNV828 requires no minimum hydraulic pressure to function due to its direct actuation mechanism. It incorporates manual override options with detent mechanisms designed for temporary actuation, boasting a mechanical life expectancy of approximately 7,000 cycles. This model uses EPDM seals suitable for phosphate ester fluids; however, these seals must avoid exposure to petroleum-based fluids which can cause damage. Another notable feature of the DMDALNV828 is its wet armature design allowing the working fluid to surround the armature, thus being exposed to heat generated by the coil which may affect fluid integrity over prolonged periods. The valve supports interchangeable coils with other Sun Series 1 solenoid products and offers versatility in mounting orientation. Additionally, this model utilizes Sun's floating style construction which minimizes internal parts binding from excessive installation torque or machining variations in cavity-cartridge setups. With a flow capacity of up to 12 gpm (45 L/min) and maximum operating pressure of 5000 psi (350 bar), along with rapid typical response times of 50 ms and switching frequency up to 15000 cycles/hr, the DMDALNV828 is an excellent choice for high-stress hydraulic environments requiring precise control and reliability.
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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