SUN HYDRAULICS
DMDADRV728
$235.79 USD
- SUN HYDRAULICS
- Material:DMDADRV728
- Model:DMDA-DRV@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 DMDADRV728 (DMDADRV728) 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 is notable for its robust construction and reliability in demanding applications. The valve operates with no minimum hydraulic pressure required, ensuring consistent performance across a range of conditions. Featuring a solenoid tube assembly that is fatigue rated for up to 5000 psi (350 bar), the DMDADRV728 is built to handle high-pressure environments efficiently. The spools B and R maintain a closed transition between two positions, enhancing performance by providing faster and more consistent response times, particularly beneficial when used as pilot controls. This model incorporates Sun Hydraulics' floating style construction which minimizes internal parts binding caused by excessive installation torque or variations in cavity/cartridge machining. It also features interchangeable coils with other Sun Series 1 solenoid products, adding versatility and ease of maintenance to its design attributes. The valve's manual override mechanism is designed for temporary actuation with a mechanical life expectancy of approximately 7,000 cycles. Additionally, the wet armature design allows the working fluid to surround the armature; however, caution is advised as prolonged energization can lead to fluid degradation especially with water-glycol mixtures. Specifically configured cartridges with EPDM seals are recommended for use with phosphate ester fluids to avoid damage from petroleum-based fluids. With a maximum operating pressure of 5000 psi (350 bar) and a flow capacity of up to 12 gpm (45 L/min), the DMDADRV728 provides reliable control for various hydraulic applications without compromising on efficiency or safety.
The Sun Hydraulics DMDADRV728 (DMDADRV728) 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 is notable for its robust construction and reliability in demanding applications. The valve operates with no minimum hydraulic pressure required, ensuring consistent performance across a range of conditions. Featuring a solenoid tube assembly that is fatigue rated for up to 5000 psi (350 bar), the DMDADRV728 is built to handle high-pressure environments efficiently. The spools B and R maintain a closed transition between two positions, enhancing performance by providing faster and more consistent response times, particularly beneficial when used as pilot controls. This model incorporates Sun Hydraulics' floating style construction which minimizes internal parts binding caused by excessive installation torque or variations in cavity/cartridge machining. It also features interchangeable coils with other Sun Series 1 solenoid products, adding versatility and ease of maintenance to its design attributes. The valve's manual override mechanism is designed for temporary actuation with a mechanical life expectancy of approximately 7,000 cycles. Additionally, the wet armature design allows the working fluid to surround the armature; however, caution is advised as prolonged energization can lead to fluid degradation especially with water-glycol mixtures. Specifically configured cartridges with EPDM seals are recommended for use with phosphate ester fluids to avoid damage from petroleum-based fluids. With a maximum operating pressure of 5000 psi (350 bar) and a flow capacity of up to 12 gpm (45 L/min), the DMDADRV728 provides reliable control for various hydraulic applications without compromising on efficiency or safety.
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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