4WREE6‑3X Proportional Directional Valve
Product Overview
4WREE6‑3X is a high‑precision direct‑operated electro‑hydraulic Hydraulic valve, widely used for closed‑loop flow and direction control in precision‑automation hydraulic system and medium‑light‑load industrial Machine.
This compact proportional directional Hydraulic valve is equipped with built‑in onboard electronics (OBE) and electrical spool‑position feedback sensor. It receives analog electric control signal and drives the main spool directly by proportional solenoid, realizing stepless, infinitely‑variable regulation on flow rate and movement direction of hydraulic cylinders and hydraulic motors. Closed‑loop feedback greatly improves control repeatability and response stability of the whole hydraulic system, delivering smooth acceleration‑deceleration, shock‑free switching and precise speed adjustment for your automated Machine. It is an ideal precision control component for injection molding machines, machine tools, test benches, packaging‑processing equipment and small‑size hydraulic stations.
Technical Specifications
‑ Model Series: 4WREE6‑3X
‑ Product Type: Direct‑operated electro‑hydraulic proportional directional Hydraulic valve, with spool position feedback & integrated onboard electronics
‑ Nominal Size: NG6 (CETOP‑03)
‑ Max working pressure (P/A/B port): 315‑350 bar
‑ Return port T max pressure: 210 bar
‑ Rated flow range: 4‑32 L/min (Δp=10 bar), maximum flow up to 80 L/min
‑ Mounting: Sub‑plate mounting, ISO 4401‑03 standard installation dimension
‑ Spool function: 4/2‑way, 4/3‑way, spring‑centered
‑ Power supply: 24 VDC
‑ Control signal: Analog ±10V
‑ Protection class: IP65 (with matched connector)
‑ Working medium: Anti‑wear hydraulic oil for industrial hydraulic system
‑ Feature: Compact structure, fast response, high repeat accuracy, simple wiring, low‑noise operation, perfect for high‑precision speed‑control hydraulic Machine
Working Principle
As a direct‑drive proportional Hydraulic valve, 4WREE6‑3X does not require pilot oil. After receiving the command electric signal, the built‑in amplifier drives the proportional solenoid to push the main spool to shift. The integrated position sensor feeds the real‑time spool‑displacement signal back to the onboard electronic unit, forming closed‑loop control. The valve continuously adjusts the opening area of valve port, so as to steplessly change flow volume and oil‑flow direction inside the hydraulic system, and then precisely control the moving speed and direction of actuators.
Failure of proportional solenoid, damage of position sensor or breakdown of onboard amplifier will cause unstable speed, drifting, slow response or crawling action of the Machine. Replacing a qualified 4WREE6‑3X proportional directional valve can fully restore the precise regulation performance of your hydraulic circuit.
Core Advantages
1. Built‑in closed‑loop spool‑position feedback realizes excellent control repeatability, ensuring long‑term stable precision regulation of the hydraulic system.
2. Direct‑operated structure, no pilot‑oil required, simplifies hydraulic circuit layout for compact‑size Machine.
3. Integrated onboard electronics (OBE), no extra external amplifier needed, greatly reduces wiring workload and installation cost.
4. Standard ISO sub‑plate installation, strong interchangeability, convenient to replace and upgrade existing hydraulic system.
5. Compact NG6 body with fast dynamic response, low friction spool‑sleeve pair, smooth shock‑free speed transition, suitable for frequent start‑stop operation.
Application Range
4WREE6‑3X proportional directional Hydraulic valve is a core precision control component for open‑loop and closed‑loop industrial hydraulic system. It is widely applied to injection‑molding machinery, CNC machine tools, hydraulic test benches, automation production‑lines, packaging equipment, material‑handling devices and other automated hydraulic‑driven Machine. Suitable for hydraulic‑system integrators, equipment‑manufacturers, maintenance workshops and global spare‑parts distributors.
