Guangdong Yanhui Hydraulic Co., Ltd. is one of the leading manufacturers and suppliers of atos proportional directional valve in China. We warmly welcome you to wholesale bulk atos 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
▔▔Atos proportional directional valves are high-performance electro-hydraulic control components designed for precise regulation of flow rate, direction, and pressure in demanding industrial and mobile applications. By converting an electrical reference signal into proportional hydraulic output, these valves deliver superior dynamic response and movement repeatability.
Technical Specifications
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| Technical Parameter | Standard Direct-Operated Series | High-Performance Pilot-Operated Series |
| Max Working Pressure | Up to 31.5 MPa (315 bar) | Up to 35.0 MPa (350 bar) |
| Rated Flow Range | 10 L/min to 160 L/min | Up to 1000 L/min |
| Operating Fluid Temperature | -20°C to +70°C | -20°C to +80°C |
| Fluid Viscosity Range | 10 to 100 mm2/s | 10 to 400 mm2/s |
| Hysteresis | < 0.5% to < 1.0% of max span | < 0.3% with position transducer |
| Step Response Time (0-100%) | 15 ms to 30 ms | 30 ms to 50 ms |
| Recommended Filtration | ISO 4406 class 18/16/13 | ISO 4406 class 16/14/11 |
Configuration Options
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- Structure: Direct-operated spool type or two-stage pilot-operated configuration with main stage centering springs.
- Control & Feedback Mode: Open-loop control or closed-loop control utilizing an integrated linear variable differential transformer (LVDT) position transducer for exact spool placement.
- Driver & Amplifiers: Available with external electronic drivers (Eurocard format) or integrated on-board digital electronics (OBE) featuring analog or fieldbus (CANopen, Profibus DP, EtherCAT) communication.
- Size & Interface: CETOP standard mounting interfaces available in NG6, NG10, NG16, and NG25 sizes (ISO 4401 compliance).
- Electrical Connection: Standard 7-pin or 12-pin waterproof electrical connectors ensuring IP67 protection class.
Key Materials and Components
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- Valve Body: High-strength spheroidal graphite cast iron or forged steel, treated with protective external anti-corrosion coating.
- Spool and Sleeve: Hardened, precision-ground alloy steel optimized for low friction, minimal internal leakage, and extended wear resistance.
- Proportional Solenoids: High-temperature copper coil windings with metal-enclosed armatures designed for continuous duty cycles and thermal stability.
- Seals: Premium NBR (Nitrile) or FKM (Viton) elastomers ensuring reliable sealing across wide temperature ranges and compatibility with mineral-based and synthetic hydraulic fluids.
Packaging and Transport Protection
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- Industrial Packaging: Individually packed in sturdy corrugated cardboard boxes with custom-molded high-density EPE anti-shock foam cushioning.
- Moisture & Corrosion Control: Enclosed in sealed anti-corrosion VCI (Volatile Corrosion Inhibitor) poly bags paired with active silica gel desiccant packs to prevent humidity damage.
- Port Protection: Heavy-duty threaded plastic protective plugs securely fitted to all hydraulic ports to block dust, moisture, and debris during transit.
- Bulk & Export Shipping: Master cartons bundled onto fumigation-free export wooden pallets, securely strapped and shrink-wrapped for safe international air and ocean freight.
Applications
▔▔- Injection Molding Machines: Precise regulation of injection velocity, holding pressure, and mold opening/closing profiles to guarantee molded part accuracy.
- Metallurgical Equipment: Hydraulic control for continuous casting lines, roll balance systems, and high-speed shearing machinery.
- Heavy Industrial Presses: Flow and pressure synchronization for deep drawing presses, stamping machines, and powder metallurgy equipment.
- Marine & Offshore Winches: Smooth acceleration, load holding, and accurate speed regulation for anchor handling and hoisting systems.
Related Models
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| Model Series | Size / CETOP | Description & Key Features |
| Atos DPHI | NG6 / NG10 | Standard direct-operated proportional directional valve, open loop |
| Atos DPHZO | NG6 / NG10 | Direct-operated proportional valve with LVDT position feedback |
| Atos DPZO | NG10 / NG16 / NG25 | Two-stage pilot-operated proportional valve with digital on-board electronics |
| Atos DHZO | NG6 | Compact direct-operated proportional directional valve for tight spaces |
FAQ
▔▔Q1: How do I confirm the exact replacement model if my valve nameplate is worn out?
A: You can provide photos of the valve body, along with your machine's system flow rate, working pressure, port size, and voltage requirements. Our technical team will cross-reference and match the correct specification.
Q2: What hydraulic oil cleanliness level is required to ensure long service life?
A: We strongly recommend maintaining fluid cleanliness at ISO 4406 class 18/16/13 or better. Utilizing high-efficiency pressure and return line filters prevents particle contamination from jamming close-tolerance spool clearances.
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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