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SUN HYDRAULICS
DMDALBN912


$187.34 USD
  • SUN HYDRAULICS
  • Material:DMDALBN912
  • Model:DMDA-LBN@912
  • Summary:Cartridge

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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 DMDALBN912 (DMDALBN912) is a high-performance solenoid-operated 3-way, 2-position cartridge valve that offers precise control in hydraulic systems. This direct-acting, balanced spool directional valve is specifically designed for robust applications, featuring a fatigue rating of 5000 psi (350 bar) for the solenoid tube assembly. It incorporates a closed transition between Spools B and R, enhancing performance by ensuring faster and more consistent response times, particularly beneficial in pilot control applications where capacity is less critical. The DMDALBN912 operates without requiring a minimum hydraulic pressure, making it versatile for various operational environments. It includes manual override options with the D or L control, which are intended for temporary actuation and have a mechanical life expectancy of approximately 7,000 cycles. The valve's design utilizes EPDM seals suitable for phosphate ester fluids but must avoid exposure to petroleum-based fluids to prevent seal damage. With a wet armature design, the DMDALBN912\u2019s working fluid surrounds the armature which may be exposed to heat during prolonged coil energization\u2014important to consider when using fluids like water-glycol mixtures that could degrade under high temperatures. The interchangeable coils compatible with other Sun Series 1 solenoid products offer flexibility in mounting and maintenance. This model also features Sun\u2019s floating style construction which minimizes internal parts binding due to installation torque or cavity-cartridge machining variations. Key specifications include a flow capacity of 12 gpm (45 L/min), maximum operating pressure of 5000 psi (350 bar), typical response time of 50 ms, and maximum valve leakage at 5 in\u00b3/min at 3000 psi. The manual override requires minimal force, enhancing ease of use under different pressure settings. This makes the DMDALBN912 an ideal choice for sophisticated hydraulic systems requiring reliable and efficient directional control.

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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