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SUN HYDRAULICS
DMDADAV748


$235.79 USD
  • SUN HYDRAULICS
  • Material:DMDADAV748
  • Model:DMDA-DAV@748
  • Summary:Cartridge

Quantity in stock: 0

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***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 DMDADAV748 (DMDADAV748) is a high-performance, solenoid-operated 3-way, 2-position cartridge valve designed for precision control in hydraulic systems. It features a balanced spool with direct-acting operation, ensuring reliable function without the need for minimum hydraulic pressure. The valve is equipped with a fatigue-rated solenoid tube assembly suitable for up to 5000 psi (350 bar), making it ideal for demanding applications. This model benefits from closed transitions between spool positions B and R, optimizing performance by providing faster and more consistent response times, especially useful in pilot control applications where capacity is less critical. The manual override options available with this valve include D or L control types, which are primarily intended for temporary actuation; these controls have a mechanical life expectancy of around 7,000 cycles. Configurations with EPDM seals are specifically designed for use with phosphate ester fluids; however, these should not be exposed to petroleum-based substances as they can degrade the seals. Additionally, the wet armature design of the valve allows the working fluid to cool the armature, although prolonged energization should be monitored as it may lead to fluid breakdown in certain conditions. The interchangeable coils of the DMDADAV748 can be mounted in either direction and are compatible with other Sun Series 1 solenoid products. This flexibility is enhanced by Sun\u2019s floating style construction which minimizes internal binding caused by installation torque or machining variations. With a maximum flow capacity of 12 gpm (45 L/min) and rapid response times typically around 50 ms, this valve is an excellent choice for sophisticated hydraulic systems requiring precise directional control and robust performance.

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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