The ATOS DLKZOR-TE-140-L71/BYI is a heavy-duty industrial proportional directional valve engineered for precise electrohydraulic control of flow direction and magnitude in demanding hydraulic circuits. It features a robust spool design, integrated electronics, and a high-force proportional solenoid for accurate, repeatable positioning.
ATOS DLKZOR-TE-140-L71/BYI Technical Specifications
| Valve Type | Proportional directional valve, 4-way, 3-position |
|---|---|
| Actuation | Proportional solenoid with integrated electronics (TE) |
| Nominal Flow | 140 L/min at 70 bar ΔP |
| Maximum Pressure | 350 bar (working ports) |
| Mounting Pattern | ISO 4401 size 10 (CETOP 5) |
| Spool Type | L71 – closed center, progressive flow characteristics |
| Electrical Interface | BYI – integrated digital amplifier, reference and enable inputs |
| Supply Voltage | 24 VDC nominal |
| Protection Class | IP65 (with mating connector) |
| Fluid Temperature Range | -20 °C to +80 °C |
| Viscosity Range | 10 to 400 cSt |
| Filtration | ISO 4406 18/16/13 or better |
Key Engineering Features
- Integrated digital amplifier (BYI) for closed-loop position control and reduced wiring complexity.
- High-resolution proportional solenoid with low hysteresis and excellent repeatability.
- Robust spool and sleeve assembly designed for long service life in high-cycle applications.
- Standard ISO 4401 size 10 mounting for direct drop-in replacement.
- Optional manual override and position feedback available.
- Designed for use with mineral oil and synthetic hydraulic fluids.
Industrial Applications
- Injection molding machines – clamp and injection axis control.
- Presses – force and position regulation.
- Steel and metallurgy – continuous casting and rolling mill systems.
- Marine and offshore – deck machinery and winch control.
- Test rigs – precise flow and pressure simulation.
- Material handling – smooth acceleration and deceleration of heavy loads.
For technical inquiries, dimensional drawings, or replacement support for ATOS DLKZOR-TE-140-L71/BYI, contact the Pro-Hydraulic engineering team.
PRODUCT IMAGES


ATOS DLKZOR-TE-140-L71/BYI Proportional Directional Valve
⚡ Emergency Plant Maintenance & Ready-to-Ship Notice:
- Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
- Fast Dispatch: In-stock units ready for same-day dispatch via DHL / FedEx Express directly to your plant.
- Pre-Shipment Verification: High-definition photos, video testing runs, and serial number verification provided prior to shipment.
- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the ATOS DLKZOR-TE-140-L71/BYI Proportional Directional Valve. This precision-engineered industrial component delivers reliable performance and tight fluid control for heavy-duty hydraulic systems.