ATOS DKZOR

Product Overview

The ATOS DKZOR series consists of high-performance, direct-operated proportional directional valves (CETOP 03 / NG6 size) designed for dynamic directional and speed control in closed-loop or open-loop hydraulic systems. Operating as a core component in the ATOS digital/proportional product lineup, the DKZOR series combines electro-hydraulic accuracy, rapid response times, and robust durability. It is tailored specifically for high-precision hydraulic control scenarios including plastic injection molding machines, die-casting equipment, metal forming presses, and automated industrial production lines where smooth acceleration, precise positioning, and reproducible motion profiles are required.

Key Advantages

• Precision Motion Control: Provides dynamic velocity and direction control for high-speed hydraulic actuators.
• Proportional Solenoids: Features high-force, pressure-tight proportional solenoids equipped with zinc-plated, corrosion-resistant coils.
• Rugged Construction: Direct-operated spool-in-sleeve or cast iron body configuration optimized for long service life under high working pressures.
• Versatile Compatibility: Fully interchangeable with standard Cetop 03 / ISO 4401-03 mounting interfaces.

Technical Specifications

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Configuration Options

Mechanical Construction:

• Direct-operated spool valve structure.
• Subplate mounting conforming to ISO 4401-03 / CETOP 03 standards.

Control Types:

• DKZOR-A: Standard proportional directional valve without position transducer (for open-loop control).
• DKZOR-AE / DKZOR-AES: Integrated analog or digital electronics (plug-and-play).
• DKZOR-TE / DKZOR-TES: Integrated electronics with spool position transducer (LVDT closed-loop control).

Spool Configurations & Nominal Flow Rates:

• Symmetrical dynamic spools: 4 L/min, 8 L/min, 15 L/min, 30 L/min, 40 L/min (at $\Delta p = 30\text{ bar}$).
• Progressive spool options for smooth fine-tuning at low velocity.
• Fail-safe spool positions (center position / closed center / open center).

Electrical & Feedback Interfaces:

• 7-pin or 12-pin main connectors for power supply, command signal ($\pm10\text{ V}$ or $4\text{--}20\text{ mA}$), and monitor output.
• Digital fieldbus options: CANopen, PROFIBUS DP, EtherCAT (on AES / TES variants).

Mounting Position:

• Unrestricted; horizontal mounting is preferred.

Key Materials and Components

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• Valve Body: High-density cast iron coated with protective surface treatment to prevent external corrosion and maintain structural integrity under high operating pressures ($315\text{ bar}$).
• Spool & Sleeve: Hardened stainless steel ground with micro-tolerances. Provides minimal internal leakage, high resistance to cavitation wear, and prolonged sliding service life.
• Internal Seals:
• Standard: NBR seals (compatible with mineral oils and water-glycol).
• Option /PE: FPM / Viton seals (high thermal resistance and chemical compatibility with synthetic phosphate ester fluids).
• Transducer Core (TE/TES Series): Hermetically sealed LVDT shaft resistant to mechanical vibration and fluid contamination.

Packaging and Transport Protection

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• Individual Unit Protection: Each ATOS DKZOR valve is thoroughly oil-flushed, sealed with anti-corrosive fluid, fitted with protective port caps, and sealed inside heavy-duty anti-static vacuum plastic bags.
• Shock & Vibration Cushioning: Encased in custom-molded EPE foam cradles or shock-absorbing corrugated boxes to ensure total protection against impact during transit.
• Fixing & Hardware: Mounting screws (Grade 12.9 high-tensile bolts) and replacement seal kits are individually polybagged inside the main box.
• Bulk & Export Packaging: Multiple boxed units are packed into reinforced, export-standard wooden cases, strapped, wrapped in moisture-barrier film, and palletized for global ocean or air freight.

Applications

• Plastic Injection Molding Equipment:

Function: Precise control of mold closing/opening speed profiles and injection cylinder acceleration to prevent shock and ensure exact part dimensions.

• Die-Casting Machines:

Function: Fast response dynamic control over real-time shot sleeve motion and high-speed core pulling sequences.

• Metal Stamping & Hydraulic Presses:

Function: Smooth proportional speed transition between fast approach, pressing stroke, and slow return to extend die lifespan.

• Simulators & Test Benches:

Function: High-frequency positioning and dynamic force profile generation thanks to low hysteresis and rapid step response time.

Related Models

FAQ

How do I verify the correct ATOS model code before ordering?

Check the complete part number printed on the valve body nameplate (e.g., DKZOR-A-171-S3 /20). Ensure the spool code, flow rating, solenoid voltage, seal type, and sub-series design number match your hydraulic system schematic.

What type of hydraulic oil should be used?

Use standard mineral-based hydraulic oils (HL or HLP types conforming to DIN 51524). For synthetic fluids, water-glycol mixtures, or fire-resistant phosphate ester fluids, specify option /PE (FPM seals) during ordering.

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