Guangdong Yanhui Hydraulic Co., Ltd. is one of the leading manufacturers and suppliers of atos dlhzo in China. We warmly welcome you to wholesale bulk atos dlhzo 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 high-performance line of direct-operated digital proportional directional valves. Designed with integrated electronics and LVDT position transducers, the DLHZO series provides closed-loop spool position control for superior accuracy, rapid dynamic performance, and low hysteresis. Positioned as a flagship solution within Atos's high-response hydraulic valve lineup, the DLHZO series is engineered for demanding precision electro-hydraulic applications, including high-frequency position control, speed regulation, and force control in automated industrial machinery.
Key Advantages
▔▔- High Dynamic Response: Features high-frequency response capabilities, ensuring fast and smooth spool control under complex operating conditions.
- Closed-Loop Position Control: Integrated linear variable differential transformer (LVDT) feedback guarantees precise spool positioning and exceptional repeatability.
- Digital Electronics: Built-in digital driver (TEB or TES execution) allows flexible parameter configuration via software, system diagnostics, and seamless fieldbus integration.
- Low Hysteresis & High Resolution: Minimal internal friction and precise spool machining yield low hysteresis (under 0.1%) and fine flow adjustment.
Technical Specifications
▔▔
| Parameter | Standard Value / Specification | Units | Notes |
| Valve Size | CETOP 03 / NG06 / ISO 4401-03 | - | Standard subplate mounting |
| Max Working Pressure (Ports A, B, P) | 350 | bar | High-pressure rating |
| Max Working Pressure (Port T) | 210 | bar | Dynamic backpressure rating |
| Nominal Flow Rate (at Delta P = 70 bar) | 0.5 to 40 | L/min | Dependent on spool size/code |
| Hysteresis | < 0.1 | % of max stroke | High position accuracy |
| Repeatability | < 0.1 | % of max stroke | - |
| Response Time (0 to 100% Signal) | 10 to 15 | ms | Depending on valve execution |
| Operating Fluid Temperature |
-20 to +60 (Standard NBR)
-20 to +80 (FKM / Viton) |
°C | Ambient / Fluid temperature range |
| Fluid Viscosity Range |
15 to 100 (Recommended)
10 to 500 (Allowed) |
mm²/s (cSt) | Mineral-based hydraulic oil |
| Protection Class | IP65 / IP67 | - | According to EN 60529 |
Configuration Options
▔▔Mechanical Structure: Direct-operated spool type with subplate mounting interface according to ISO 4401 size 06.
Control Modes: Analog signal options (0–10 V, 4–20 mA) or digital fieldbus communication protocols (CANopen, PROFIBUS DP, EtherCAT).
Feedback System: High-precision LVDT position sensor mounted directly on the valve spool.
Rated Flow Spool Options: Available in spool capacities of 0.5, 1.5, 3, 7, 15, 30, and 40 L/min (at 70 bar pressure drop).
Port / Spool Configurations:
- 3-way or 4-way spools
- Center positions: P-A-B-T closed, P-T connected, or A-B-T connected
- Linear or progressive flow characteristics
Mounting Interface: Standardized CETOP 03 subplate interface with standard mounting bolts (M5x50).
Electrical Connection: 7-pin or 12-pin main connector options, plus fieldbus connectors (M12) for digital models.
Key Materials and Components
▔▔
- Sleeve and Spool Assembly: Crafted from high-strength hardened steel with fine ground surface finish to reduce wear, ensure tight clearances, and minimize internal leakage.
- Valve Body: High-grade ductile iron casing treated with anti-corrosion surface coating for long service life in harsh environments.
- Sealing System: Standard Fluorocarbon seals (FKM / Viton) or Nitrile rubber seals (NBR), providing chemical compatibility with standard mineral oils, synthetic fluids, and fire-resistant fluids.
- Transducer Housing: Protected by rugged stainless steel and aluminum housing to ensure structural integrity and signal reliability against external impact and moisture.
Packaging and Transport Protection
▔▔
- Industrial Protection: Each valve is thoroughly tested, drained, and sealed with plastic protective plugs on all hydraulic ports (A, B, P, T) to prevent contamination.
- Moisture & Rust Prevention: Vacuum-sealed in heavy-duty anti-static and anti-moisture plastic bags containing desiccant packs.
- Shock Absorption: Packed in custom-fit high-density foam shells to protect the delicate electronic transducer and valve housing against vibration and impact during transport.
- Bulk Packaging: Multiple unit shipments are secured inside heavy-duty multi-ply cardboard cartons or IPPC-certified wooden cases, reinforced with strapping bands for export shipping.
Applications
▔▔- Plastic Injection Molding Machines: Used for precise closed-loop speed control and force control of mold closing, injection cylinders, and ejector mechanisms.
- Metal Stamping & Forging Presses: Applied in hydraulic press slide positioning and pressure control to maintain tight tolerances during forming operations.
- Die-Casting Equipment: Controls shot cylinder velocity profiles to ensure stable injection speeds and eliminate porosity in cast parts.
- Steel Mill Machinery: Regulates hydraulic roll-gap adjustment cylinders (AGC systems) and hydraulic side guides requiring high-frequency response.
- Test Benches & Flight Simulators: Used in dynamic actuator systems requiring rapid frequency response and precise movement simulation.
Related Models
▔▔
| Model Code | Description | Spool Flow Rate | Driver Type |
| DLHZO-TEB-SN-060-V11 | Direct proportional valve, basic digital execution | 40 L/min | TEB (Analog/Digital) |
| DLHZO-TES-SN-060-L51 | High-performance proportional valve with fieldbus interface | 30 L/min | TES (Advanced Digital) |
| DLHZO-TEB-SN-060-V31 | Proportional valve with regenerative/custom spool design | 15 L/min | TEB (Analog) |
| DLHZO-T-060-L11 | Direct proportional valve, external driver execution | 30 L/min | External Driver (E-ME-AC) |
| DLHZO-TEB-SN-060-D11 | Linear spool response proportional valve | 7 L/min | TEB (Analog) |
FAQ
▔▔1. How do I confirm the exact model code for my DLHZO replacement?
You can find the full model code printed on the valve nameplate (e.g., DLHZO-TEB-SN-060-V11). Pay attention to the driver type, spool overlap, flow rate code, and electrical connection configuration when placing an order.
2. What fluid filtration level is required for DLHZO valves?
Due to the precise clearances between the spool and sleeve, oil contamination can lead to sticking or reduced performance. The recommended fluid cleanliness level is ISO 4406 class 16/14/11 or better, using a filter with an absolute rating of Beta 10 >= 75 (10-micron filtration).
3. What type of hydraulic oil should be used?
Standard mineral-based hydraulic fluids according to DIN 51524 (HLP or HVLP types) are ideal. If you are using synthetic fluids or water-glycol, please specify when ordering so appropriate seal materials (FKM/Viton) can be verified.
Contact Us
▔▔Get in touch with us and we will get in touch with you quickly to give you more personalized information.
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