SUN HYDRAULICS
DMDALRV748
$235.79 USD
- SUN HYDRAULICS
- Material:DMDALRV748
- Model:DMDA-LRV@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 DMDALRV748 (DMDALRV748) is a high-performance, solenoid-operated 3-way, 2-position cartridge valve designed for precise hydraulic fluid direction control. This direct-acting, balanced spool directional valve features a robust design with a fatigue rating for 5000 psi (350 bar) service, making it suitable for demanding applications. The valve\u2019s spools B and R are closed during the transition between their two positions to enhance performance by ensuring faster and more consistent response times, particularly useful in pilot control applications where capacity is less critical. Equipped with interchangeable coils from the Sun Series 1 solenoid products, the DMDALRV748 allows for flexible installation as coils can be mounted in either direction on the tube. The valve incorporates Sun\u2019s floating style construction which reduces the risk of internal parts binding due to excessive installation torque or variations in cavity/cartridge machining. This feature helps maintain operational integrity and prolongs the life of the valve. The manual override option, available with D or L control models, includes a detent mechanism designed primarily for temporary actuation with a mechanical life expectancy of around 7,000 cycles. Additionally, this model uses EPDM seals suitable for phosphate ester fluids but should avoid contact with petroleum-based fluids to prevent seal damage. With a maximum operating pressure of 5000 psi and a capacity of 12 gpm (45 L/min), this valve is capable of handling significant hydraulic flow rates efficiently. Its wet armature design ensures that heat generated by the coil is managed effectively, although care must be taken with certain fluids that may degrade at higher temperatures. Overall, the Sun Hydraulics DMDALRV748 offers reliable performance and flexibility for specialized hydraulic applications.
The Sun Hydraulics DMDALRV748 (DMDALRV748) is a high-performance, solenoid-operated 3-way, 2-position cartridge valve designed for precise hydraulic fluid direction control. This direct-acting, balanced spool directional valve features a robust design with a fatigue rating for 5000 psi (350 bar) service, making it suitable for demanding applications. The valve\u2019s spools B and R are closed during the transition between their two positions to enhance performance by ensuring faster and more consistent response times, particularly useful in pilot control applications where capacity is less critical. Equipped with interchangeable coils from the Sun Series 1 solenoid products, the DMDALRV748 allows for flexible installation as coils can be mounted in either direction on the tube. The valve incorporates Sun\u2019s floating style construction which reduces the risk of internal parts binding due to excessive installation torque or variations in cavity/cartridge machining. This feature helps maintain operational integrity and prolongs the life of the valve. The manual override option, available with D or L control models, includes a detent mechanism designed primarily for temporary actuation with a mechanical life expectancy of around 7,000 cycles. Additionally, this model uses EPDM seals suitable for phosphate ester fluids but should avoid contact with petroleum-based fluids to prevent seal damage. With a maximum operating pressure of 5000 psi and a capacity of 12 gpm (45 L/min), this valve is capable of handling significant hydraulic flow rates efficiently. Its wet armature design ensures that heat generated by the coil is managed effectively, although care must be taken with certain fluids that may degrade at higher temperatures. Overall, the Sun Hydraulics DMDALRV748 offers reliable performance and flexibility for specialized hydraulic applications.
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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