Product Overview
The ATOS DHZO-A-071-S5 20 is a high-performance proportional directional valve manufactured by Atos (Atos S.p.A.), a globally recognized leader in electrohydraulic control technology. This valve operates on a direct-operated proportional solenoid principle, where a proportional solenoid converts electrical current input into precise spool displacement, thereby modulating hydraulic flow direction and magnitude in direct proportion to the command signal. The DHZO series is engineered for open-loop proportional control systems requiring smooth, infinitely variable directional and flow control. With a nominal flow capacity of 071 (7.1 L/min at rated pressure differential), this valve serves as a critical control element in industrial hydraulic circuits, enabling accurate velocity regulation, directional switching, and deceleration profiles for actuators and motors. The “20” designates the valve’s series generation, ensuring compatibility with current Atos electronic control amplifiers and optional integral sensors for enhanced closed-loop performance.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Proportional Directional Valve (Direct-Operated, Spool Type) |
| Model Designation | DHZO-A-071-S5 20 |
| Manufacturer | Atos |
| Actuation Type | Proportional Solenoid (Single or Dual Solenoid Configuration) |
| Nominal Flow Rate | 7.1 L/min (Size 071) at Δp = 10 bar per land |
| Operating Pressure | Up to 350 bar (P, A, B ports); 210 bar (T port) |
| Spool Configuration | S5 — Closed Center, Progressive Flow Characteristics |
| Mounting Pattern | ISO 4401 Size 06 (CETOP 3 / NFPA D03) |
| Port Connections | Subplate Mounting — P, T, A, B Ports per ISO 4401 |
| Electrical Interface | DIN 43650 / ISO 4400 Connector, 12V or 24V DC Solenoid |
| Hysteresis | ≤ 5% of Rated Signal (Typical) |
Engineering Features & Advantages
- Precision Performance: The proportional directional valve (direct-operated, spool type) delivers precise, repeatable performance with low hysteresis and stable control across the full working range.
- Industrial Reliability: Constructed for continuous duty with durable, corrosion-resistant materials and proven engineering for maximum system uptime.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original ATOS standards, allowing straightforward retrofit into existing hydraulic systems without rework.
- Rated Capability: Rated for pressure ratings up to 350 bar and flow rates up to 7.1 L/min, supporting stable operation across the full working range.
Typical Industrial Applications
With a nominal flow capacity of 071 (7.1 L/min at rated pressure differential), this valve serves as a critical control element in industrial hydraulic circuits, enabling accurate velocity regulation, directional switching, and deceleration profiles for actuators and motors.
PRODUCT IMAGES
ATOS DHZO-A-071-S5 20 Proportional Directional Valve
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- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the genuine ATOS DHZO-A-071-S5 20 Solenoid Directional Valve. This Italian-made hydraulic component features a precise spool design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.