SUN HYDRAULICS
DMDALRV728
$235.79 USD
- SUN HYDRAULICS
- Material:DMDALRV728
- Model:DMDA-LRV@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 DMDALRV728 (DMDALRV728) is a high-performance solenoid-operated 3-way, 2-position cartridge valve designed for precise control in hydraulic systems. This direct-acting, balanced spool directional valve features a robust design with a fatigue rating suitable for 5000 psi (350 bar) service, ensuring reliable operation under demanding conditions. The valve's transition between positions B and R is closed, enhancing performance by offering faster and more consistent response times, particularly beneficial in pilot control applications where capacity is less critical. The DMDALRV728 requires no minimum hydraulic pressure to operate, which simplifies integration into various hydraulic circuits. It incorporates manual overrides with detent mechanisms available in models with D or L control options; these are intended for temporary actuation and have a mechanical life expectancy of around 7,000 cycles. The valve also utilizes EPDM seals suitable for use with phosphate ester fluids; however, these seals must not be exposed to petroleum-based fluids as they can cause damage. This model employs a wet armature design wherein the working fluid surrounds the armature. This setup necessitates consideration of the fluid type used, as prolonged exposure to heat can degrade certain fluids like water-glycol mixtures. The interchangeable coils compatible with other Sun Series 1 solenoid products offer flexibility in mounting and replacement. Further enhancing its durability and ease of installation, the DMDALRV728 uses Sun's floating style construction to minimize internal parts binding caused by excessive installation torque or variations in cavity/cartridge machining. With a maximum operating capacity of 12 gpm (45 L/min) and swift typical response times of 50 ms, this valve is an efficient solution for advanced hydraulic systems requiring reliable directional control.
The Sun Hydraulics DMDALRV728 (DMDALRV728) is a high-performance solenoid-operated 3-way, 2-position cartridge valve designed for precise control in hydraulic systems. This direct-acting, balanced spool directional valve features a robust design with a fatigue rating suitable for 5000 psi (350 bar) service, ensuring reliable operation under demanding conditions. The valve's transition between positions B and R is closed, enhancing performance by offering faster and more consistent response times, particularly beneficial in pilot control applications where capacity is less critical. The DMDALRV728 requires no minimum hydraulic pressure to operate, which simplifies integration into various hydraulic circuits. It incorporates manual overrides with detent mechanisms available in models with D or L control options; these are intended for temporary actuation and have a mechanical life expectancy of around 7,000 cycles. The valve also utilizes EPDM seals suitable for use with phosphate ester fluids; however, these seals must not be exposed to petroleum-based fluids as they can cause damage. This model employs a wet armature design wherein the working fluid surrounds the armature. This setup necessitates consideration of the fluid type used, as prolonged exposure to heat can degrade certain fluids like water-glycol mixtures. The interchangeable coils compatible with other Sun Series 1 solenoid products offer flexibility in mounting and replacement. Further enhancing its durability and ease of installation, the DMDALRV728 uses Sun's floating style construction to minimize internal parts binding caused by excessive installation torque or variations in cavity/cartridge machining. With a maximum operating capacity of 12 gpm (45 L/min) and swift typical response times of 50 ms, this valve is an efficient solution for advanced hydraulic systems requiring reliable directional control.
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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