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SUN HYDRAULICS
DNDCXTN924


$230.93 USD
  • SUN HYDRAULICS
  • Material:DNDCXTN924
  • Model:DNDC-XTN@924
  • 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 DNDCXTN924 (DNDCXTN924) is a direct acting, solenoid-operated, 4-way, 3-position spool valve designed for precision fluid control. This valve is spring-centered to the neutral position and offers versatile flow paths depending on coil activation. When coil A is energized, the flow direction is from port 3 P to port 2 A and from port 4 B to port 1 T. Conversely, energizing coil B directs flow from port 3 to port 4 and from port 2 to port 1. The valve's solenoid tube assembly is rated for fatigue at service pressures up to 5000 psi (350 bar), ensuring robust performance in demanding applications. The DNDCXTN924 does not require a minimum hydraulic pressure for operation due to its direct actuation design. It features a wet armature system where the working fluid surrounds the armature, which helps dissipate heat generated by the coil but can affect certain fluids over time. The valve supports various coil termination and voltage options, including configurations with surge protection, making it adaptable for specific operational needs. This model incorporates Sun's floating style construction that minimizes internal part binding risks due to installation torque or machining variations in cavity/cartridge interfaces. It has a capacity of up to 5 gpm (20 L/min) and exhibits a typical response time of approximately 50 ms. The maximum leakage at specified conditions is limited to 10 in\u00b3/min (160 cc/min). Additionally, it supports switching frequencies up to 15,000 cycles per hour. Seal kits are available with Viton material compatibility for both cartridge and coil components. With interchangeable coils compatible with other Sun Series 1 products and high-efficiency magnetic design yielding reliable shifting performance, this valve serves as an effective solution for precise hydraulic control applications requiring durability under high-pressure conditions.

This direct acting, solenoid-operated, 4-way, 3-position spool valve is spring centered to the neutral position. When coil A is energized, the flow is from port 3 (P) to port 2 (A) and from port 4 (B) to port 1 (T). When coil B is energized, the flow is from port 3 to port 4 and from port 2 to port 1.

  • 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.
  • In differential flow circuits, the higher return flow should be directed through port 2 (A) to port 1 (T).
  • 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 5 gpm20 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
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
Seal kit - Cartridge Viton: 990-431-006
Seal and nut kit - Coil Viton: 990-770-006Viton: 990-770-006

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