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SUN HYDRAULICS
DNDCXWE297


$862.00 USD

Tags:

  • SUN HYDRAULICS
  • Material:DNDCXWE297
  • Model:DNDC-XWE@297
  • 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 DNDCXWE297 (DNDCXWE297) is a highly efficient, direct acting, solenoid-operated, 4-way, 3-position spool valve designed for reliable hydraulic control applications. This valve is spring-centered to a neutral position and allows fluid flow manipulation when either of its coils is energized. Specifically, energizing coil A directs flow from port 3 P to port 2 A and from port 4 B to port 1 T. Conversely, energizing coil B redirects the flow from port 3 to port 4 and from port 2 to port 1. The solenoid tube assembly of this valve is fatigue rated for service up to 5000 psi (350 bar), ensuring durability under high-pressure conditions. Notably, the DNDCXWE297 does not require a minimum hydraulic pressure for operation due to its direct actuation design. It features a wet armature design where the working fluid surrounds the armature, which can influence performance if the coil remains energized for extended periods. This valve is compatible with EPDM seals for systems utilizing phosphate ester fluids; however, exposure to petroleum-based substances can damage these seals. The DNDCXWE297 offers flexibility with various coil termination and voltage options available\u2014some even with surge protection\u2014to cater to specific operational needs. The solenoid's magnetic design ensures high efficiency by delivering significant spool actuating force per watt expended, contributing to reliable valve shifting. Additionally, coils are interchangeable with other Sun Series 1 products and can be mounted in either direction on the tube. With a capacity of up to 5 gpm (20 L/min) and a typical response time of approximately 50 ms, this valve supports applications requiring rapid switching frequencies up to 15,000 cycles per hour. Its robust construction minimizes internal binding risks due to excessive torque or machining variations during installation.

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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