Product Overview
The ATOS DKZOR-A-173-D5/18 40 is a high-performance proportional directional valve manufactured by Atos (a brand of the Bosch Rexroth Group), engineered for precise electro-hydraulic control of flow direction and magnitude in industrial hydraulic systems. This direct-operated proportional valve utilizes a precision-machined spool and sleeve assembly actuated by a proportional solenoid, enabling infinitely variable flow control proportional to the electrical input signal. The DKZOR series is specifically designed for open-loop applications requiring smooth, accurate directional control with minimal hysteresis and excellent repeatability. With a nominal flow capacity of 40 L/min and a maximum operating pressure of 350 bar, this valve serves as a critical control element in demanding hydraulic circuits where precise velocity and position regulation of actuators is essential.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Proportional Directional Valve (Direct-Operated, Spool Type) |
| Model Designation | DKZOR-A-173-D5/18 40 |
| Manufacturer | Atos (Bosch Rexroth Group) |
| Nominal Flow Rate | 40 L/min at Δp = 10 bar per land |
| Maximum Operating Pressure | 350 bar (ports P, A, B); 210 bar (port T) |
| Spool Configuration | Type A — Meter-in / Meter-out with closed center (P→A/B, T blocked at rest) |
| Actuation | Proportional solenoid, single or dual solenoid configuration |
| Electrical Supply | 24 VDC nominal (D5 coil class), 18 Ω solenoid resistance |
| Hysteresis | ≤ 5% of rated flow (without dither) |
| Response Time | ≤ 30 ms (step response, 0 to 100% signal) |
| Mounting Pattern | ISO 4401-05 (CETOP 5 / NG10) subplate mounting |
| Hydraulic Fluid | Mineral oil based hydraulic fluid, ISO VG 32–68, cleanliness ISO 440 |
Engineering Features & Advantages
- Precision Performance: The integrated proportional solenoid, single or dual solenoid configuration ensures precise, repeatable control with low hysteresis and stable performance across the full working range.
- Industrial Reliability: Designed for dependable long-term operation in demanding industrial environments, with quality bearings and sealing systems ensuring extended maintenance intervals.
- Direct Fit Replacement: Precision-manufactured to original ATOS specifications for direct replacement, minimising downtime and eliminating fitment issues.
- Rated Capability: Rated for pressure ratings of 350 bar (ports P, A, B); 210 bar (port T) and flow rates up to 40 L/min, supporting stable operation across the full working range.
Typical Industrial Applications
The DKZOR series is specifically designed for open-loop applications requiring smooth, accurate directional control with minimal hysteresis and excellent repeatability.
PRODUCT IMAGES
ATOS DKZOR-A-173-D5/18 40 Proportional Directional Valve
⚡ Emergency Plant Maintenance & Ready-to-Ship Notice:
- Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
- Fast Dispatch: In-stock units ready for same-day dispatch via DHL / FedEx Express directly to your plant.
- Pre-Shipment Verification: High-definition photos, video testing runs, and serial number verification provided prior to shipment.
- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the genuine ATOS DKZOR-A-173-D5/18 40 Solenoid Directional Valve. This Italy-made 18V hydraulic component features a direct-acting spool design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.