Guangdong Yanhui Hydraulic Co., Ltd. is one of the leading manufacturers and suppliers of atos dlhzo servo proportional directional valve in China. We warmly welcome you to wholesale bulk atos dlhzo servo proportional directional valve for sale here from our factory. If you have any enquiry about pricelist and quotation, please feel free to email us.
Product Overview
▔▔The Atos DLHZO series represents a premier line of direct-operated, digital servo-proportional directional valves designed for high-dynamic hydraulic applications. Engineered with an integrated LVDT (Linear Variable Differential Transformer) position transducer, the DLHZO series offers high-frequency response, outstanding repeatability, and precise closed-loop spool position control.
Key Advantages
▔▔-
High Dynamic Response: Superior frequency response (>100 Hz) enabling dynamic closed-loop control of position, velocity, and force.
Integrated Digital Electronics: Options for standard onboard electronics (TEB/LEB) or full digital execution (TES/LES) supporting software configuration via USB or infrared interfaces.
Closed-Loop Position Control: High-accuracy LVDT position sensor provides continuous real-time spool feedback with low hysteresis (<0.1%).
Fieldbus Integration: Optional support for major industrial protocols, including CANopen, PROFIBUS DP, EtherNet/IP, EtherCAT, and POWERLINK.
Fail-Safe & Safety Compliance: Available with fail-safe spool configurations, enable signal control, and safety certifications for hazardous or high-risk environments.
Zero-Lap Option: Available with standard spool laps for linear flow regulation or zero-lap (servo spool execution) for high-accuracy closed-loop position control.
-
Technical Specifications
▔▔| Parameter / Feature | Specification Details |
| Valve Type | Direct-operated servo-proportional directional valve |
| Mounting Interface | ISO 4401 size 06 / CETOP 03 / NG6 |
| Max. Operating Pressure | Ports A, B, P: up to 315 bar (or 350 bar depending on model execution); Port T: up to 210 bar |
| Nominal Flow Rate | 5 L/min up to 40 L/min (depending on spool type and size selection) |
| Max. Recommended Flow | Up to 70 L/min |
| Spool Execution | Spool-in-sleeve design; Zero lap (axis control), overlapping, or asymmetrical |
| Position Feedback | Inductive LVDT transducer with linear output |
| Dynamic Response (-3 dB) | Up to 100 – 120 Hz at ±5% signal amplitude |
| Hysteresis | < 0.1% to 0.2% of full scale |
| Protection Rating | IP66 / IP67 according to EN 60529 (with properly mounted connectors) |
Applications
▔▔| Application Field | Key Equipment / Machine | Primary Function of DLHZO Valve |
| Plastics & Rubber Machinery | Injection molding machines, blow molding systems | Precise speed control during injection cycle and active mold clamping position control. |
| Metal Forming & Presses | Hydraulic presses, bending machines, stamping machinery | High-dynamic stroke control, synchro-control of multiple press cylinders, and force-limiting control. |
| Simulators & Testing Rigs | Automotive fatigue test beds, flight simulators | Replicating dynamic movement vectors and high-frequency sinusoidal movement profile execution. |
| Turbines & Energy Generation | Steam valve actuators, wind turbine pitch control | Fine-tuned actuator positioning, high reliability under continuous operation, and fail-safe return. |
| Metal Processing & Steel Mills | Continuous casting lines, rolling mill gap control | Dynamic automatic gauge control (AGC) and high-temperature hydraulic cylinder positioning. |
Related Models
▔▔| Model Code | Spool Type & Lap | Electronic Execution | Fieldbus Interface | Key Feature / Application |
| DLHZO-TEB-SN-060-V | Standard Linear Spool (Overlapped) | TEB (Basic Digital) | Analog / None | Standard speed & direction control |
| DLHZO-TES-SN-071-L | Servo Spool (Zero-Lap) | TES (Full Digital) | Analog / None | High-accuracy position closed-loop |
| DLHZO-TES-BC-073-D | Progressive Spool | TES (Full Digital) | CANopen (BC) | Precise low-flow control via CANbus |
| DLHZO-TES-BP-060-V | Standard Linear Spool | TES (Full Digital) | PROFIBUS DP (BP) | Multi-axis PLC integration via Profibus |
| DLHZO-TES-EH-071-L | Servo Spool (Zero-Lap) | TES (Full Digital) | EtherCAT (EH) | Real-time high-speed EtherCAT motion control |
| DLHZO-LES-EW-073-L | Fail-Safe Linear Spool | LES (Digital w/ Enable) | POWERLINK (EW) | Safety-relevant machinery with axis enable |
| DLHZO-T-040-L3 | Analog (External Driver) | External Driver (E-ME-AC) | N/A | Classical configuration without onboard driver |
FAQ
▔▔Q1: What is the main difference between DLHZO (zero-lap spool) and standard proportional directional valves?
A: Standard proportional valves usually feature an overlapped spool (10% to 20% dead band), which creates a non-linear delay when reversing direction or starting from center. The DLHZO valve offers zero-lap spool options (e.g., spool code 071 or 073), where the spool lands align precisely with the sleeve ports. This eliminates dead band, allowing instant continuous fluid response, higher closed-loop gain, and high-precision position control.
Q2: What is the difference between TEB/LEB and TES/LES digital drivers?
A:
TEB / LEB are basic digital drivers configured for standard proportional control with pre-set software parameters and analog reference signals.
TES / LES are advanced digital drivers supporting complex software parameters, integrated fieldbus interfaces (CANopen, EtherCAT, PROFIBUS), real-time diagnostics, and full closed-loop axis control (position/speed/force).
Contact Us
▔▔Request a Quote Today to ensure your hydraulic system performs at its best with genuine components from Yanhui Hydraulic.
Hot Tags: atos dlhzo servo proportional directional valve, China atos dlhzo servo proportional directional valve suppliers, bosch rexroth proportional solenoid valve, brass hydraulic valve, industrial hydraulic valve, MOOG Plunger Pump, original moog servo valve, precision hydraulic valve
