732540-KDG4V-3 by Vickers

The 732540-KDG4V-3 belongs to the Vickers Amplifier Boards series and is built by Vickers for hydraulic motion control loops. Classified as a proportional directional valve assembly, it pairs with on-board electronics to meter flow according to an analog command signal. In automated presses, injection machines, or position-regulated actuators, it modulates port flow so that cylinder speed and direction follow drive requirements with minimal lag.

This model uses a solenoid-controlled actuation system that shifts the single-stage spool against a spring-centered return. Overall dimensions are compact, with a body height of 3.400 in, a length of 9.370 in, and a width of 1.900 in, allowing enclosure inside tight manifold blocks. Hydraulic attachment uses the ISO4401-03 (NFPA D03, CETOP 3) interface, while a subplate mount simplifies removal for service. The valve tolerates a maximum pressure of 350 bar (5000 psi). No feedback sensor is integrated, so the control loop relies on external transducers for closed-loop accuracy.

Operation is reliable between -20 °C and 70 °C, enabling year-round use in indoor or sheltered outdoor installations. The hydraulic circuit must maintain oil cleanliness at ISO 4406 17/15/12; this particle level protects the precision spool lands from scoring. Vickers specifies compatibility with antiwear hydraulic oils, and any substitute fluid must match that viscosity profile. The spring-centered build type quickly returns the spool to neutral when power is lost, and the single-stage design keeps dynamic response predictable. Because it is a proportional directional valve rather than an on/off device, flow varies continuously with coil current. Mounting on a subplate also isolates heat from the main manifold, helping thermal stability across extended duty cycles.