SUN HYDRAULICS
DMDADNN748
$227.85 USD
- SUN HYDRAULICS
- Material:DMDADNN748
- Model:DMDA-DNN@748
- 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 DMDADNN748 (DMDADNN748) is a high-performance, solenoid-operated 3-way, 2-position cartridge valve. This direct-acting, balanced spool directional valve is specifically designed for robust and efficient hydraulic control. The valve features a fatigue rating of 5000 psi (350 bar), making it suitable for high-pressure applications. Its spools B and R are closed during the transition between positions, which enhances performance while reducing capacity, making it ideal for pilot control applications where speed and consistency are critical. The DMDADNN748 valve operates without requiring a minimum hydraulic pressure, providing versatility in various hydraulic systems. It includes configurations with EPDM seals intended for use with phosphate ester fluids; however, these seals must avoid exposure to petroleum-based fluids to prevent damage. The wet armature design of the valve ensures that the working fluid surrounds the armature, which can be critical when considering the thermal effects during prolonged energization. This model also boasts interchangeable coils with other Sun Series 1 solenoid products and can be mounted in either direction on the tube. Additionally, it incorporates Sun's floating style construction to minimize internal parts binding caused by excessive installation torque or variations in cavity/cartridge machining. Key specifications include a flow capacity of 12 gpm (45 L/min), a maximum operating pressure of 5000 psi (350 bar), and typical response times of 50 ms. The manual override feature requires a force of approximately 5 lbs at 1000 psi for actuation and has a stroke of .10 inches (2.5 mm). This model is compact and lightweight at only .60 lb (0.30 kg), facilitating easy installation with standard tools.
The Sun Hydraulics DMDADNN748 (DMDADNN748) is a high-performance, solenoid-operated 3-way, 2-position cartridge valve. This direct-acting, balanced spool directional valve is specifically designed for robust and efficient hydraulic control. The valve features a fatigue rating of 5000 psi (350 bar), making it suitable for high-pressure applications. Its spools B and R are closed during the transition between positions, which enhances performance while reducing capacity, making it ideal for pilot control applications where speed and consistency are critical. The DMDADNN748 valve operates without requiring a minimum hydraulic pressure, providing versatility in various hydraulic systems. It includes configurations with EPDM seals intended for use with phosphate ester fluids; however, these seals must avoid exposure to petroleum-based fluids to prevent damage. The wet armature design of the valve ensures that the working fluid surrounds the armature, which can be critical when considering the thermal effects during prolonged energization. This model also boasts interchangeable coils with other Sun Series 1 solenoid products and can be mounted in either direction on the tube. Additionally, it incorporates Sun's floating style construction to minimize internal parts binding caused by excessive installation torque or variations in cavity/cartridge machining. Key specifications include a flow capacity of 12 gpm (45 L/min), a maximum operating pressure of 5000 psi (350 bar), and typical response times of 50 ms. The manual override feature requires a force of approximately 5 lbs at 1000 psi for actuation and has a stroke of .10 inches (2.5 mm). This model is compact and lightweight at only .60 lb (0.30 kg), facilitating easy installation with standard tools.
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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