SUN HYDRAULICS
DNDATUN748
$256.84 USD
- SUN HYDRAULICS
- Material:DNDATUN748
- Model:DNDA-TUN@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 DNDATUN748 (DNDATUN748) is a solenoid-operated, 4-way, 2-position cartridge valve designed for direct-acting, balanced spool directional control. This valve is built to withstand a fatigue-rated service pressure of up to 5000 psi (350 bar) and operates without the need for minimum hydraulic pressure. It offers multiple manual override options, although these are not compatible with weatherized coils. The D, L, and T manual controls have a mechanical life expectancy of approximately 7,000 cycles. For systems using phosphate ester fluids, cartridges with EPDM seals are recommended as petroleum-based fluids can cause damage. The valve features a wet armature design which exposes the working fluid to the coil's heat; certain fluids like water-glycol mixtures may degrade over time under these conditions. This model boasts high efficiency due to its unique magnetic solenoid design that provides significant spool actuating force per watt consumed. It supports various coil termination and voltage options, some offering surge protection and IP69K ratings for enhanced environmental protection. Coils are interchangeable with other Sun Series 1 solenoid products and can be mounted in either direction on the tube. The valve employs Sun's floating style construction to reduce internal binding risks due to excessive installation torque or machining variations. Additional specifications include a capacity of 10 gpm (40 L/min), typical response time of 50 ms, maximum leakage at specified conditions of 10 in\u00b3/min (160 cc/min), and a switching frequency capability of up to 15,000 cycles per hour. It requires an installation torque between 30-35 lbf ft (41-47 Nm), has a hex size of .78 inches (22.2 mm), and weighs approximately .60 lb (.30 kg). For maintenance or replacement needs, Viton seal kits are available for both cartridge and coil components.
The Sun Hydraulics DNDATUN748 (DNDATUN748) is a solenoid-operated, 4-way, 2-position cartridge valve designed for direct-acting, balanced spool directional control. This valve is built to withstand a fatigue-rated service pressure of up to 5000 psi (350 bar) and operates without the need for minimum hydraulic pressure. It offers multiple manual override options, although these are not compatible with weatherized coils. The D, L, and T manual controls have a mechanical life expectancy of approximately 7,000 cycles. For systems using phosphate ester fluids, cartridges with EPDM seals are recommended as petroleum-based fluids can cause damage. The valve features a wet armature design which exposes the working fluid to the coil's heat; certain fluids like water-glycol mixtures may degrade over time under these conditions. This model boasts high efficiency due to its unique magnetic solenoid design that provides significant spool actuating force per watt consumed. It supports various coil termination and voltage options, some offering surge protection and IP69K ratings for enhanced environmental protection. Coils are interchangeable with other Sun Series 1 solenoid products and can be mounted in either direction on the tube. The valve employs Sun's floating style construction to reduce internal binding risks due to excessive installation torque or machining variations. Additional specifications include a capacity of 10 gpm (40 L/min), typical response time of 50 ms, maximum leakage at specified conditions of 10 in\u00b3/min (160 cc/min), and a switching frequency capability of up to 15,000 cycles per hour. It requires an installation torque between 30-35 lbf ft (41-47 Nm), has a hex size of .78 inches (22.2 mm), and weighs approximately .60 lb (.30 kg). For maintenance or replacement needs, Viton seal kits are available for both cartridge and coil components.
This solenoid-operated 4-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.
- This valve is direct actuated and requires no minimum hydraulic pressure for operation.
- This cartridge has several manual override choices, including no manual override. See the CONFIGURATION section. Please note: Manual override functionality is not compatible with weatherized coils.
- 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 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.
- A wide variety of coil termination and voltage options are available, with and without surge protection. See the CONFIGURATION section.
- The solenoid's unique magnetic design results in a high efficiency solenoid, yielding high spool actuating force per Watt expended, leading to reliable valve shifting.
- Coils are interchangeable with other Sun Series 1 solenoid products and can be mounted on the tube in either direction.
- Coil connector options offer ratings up to IP69K. See individual coil product pages for details. Additional weatherized coils and kits are available for more complete environmental protection.
- 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-31A |
| Series | 1 |
| Capacity | 10 gpm40 L/min. |
| Maximum Operating Pressure | 5000 psi350 bar |
| Response Time - Typical | 50 ms50 ms |
| Maximum Valve Leakage at 110 SUS (24 cSt) | 10 in³/min.@3000 psi160 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: 990-431-006 |
| Seal and nut kit - Coil | Viton: 990-770-006Viton: 990-770-006 |
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