Product Overview
The ATOS HQ-012 52 is a modular flow control valve engineered for precise regulation of actuator speed within industrial hydraulic systems. Manufactured to Atos’ exacting standards, this CETOP/ISO-size modular valve is designed for sandwich mounting between a directional control valve and its subplate, providing a compact, leak-resistant solution for metering flow to cylinders and motors. The HQ series utilizes a pressure-compensated, two-way flow control cartridge that maintains a constant set flow rate independent of load and system pressure fluctuations, ensuring repeatable actuator motion across demanding duty cycles. Its modular architecture allows seamless integration into existing manifold stacks without additional piping, making it a preferred choice for machine builders requiring accurate velocity control and simplified circuit assembly.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Hydraulic Valve – Modular Flow Control Valve |
| Model Designation | HQ-012 52 |
| Operating Pressure | Standard Industrial Grade (Up to 315 bar rated) |
| Mounting & Connection | CETOP 3 / ISO 4401-03 / NG6 Modular Interface |
| Flow Control Type | Pressure-Compensated, Two-Way Metering Cartridge |
| Adjustment Method | Manual Screw with Locking Nut (Optional Tamper-Proof Cap) |
| Nominal Flow Range | Up to 30 L/min (dependent on size 012 spool) |
| Fluid Compatibility | Mineral Oil, Phosphate Ester, Water-Glycol (Seal Dependent) |
| Seal Material | NBR (Standard) / FKM (High-Temperature Option) |
Engineering Features & Advantages
- Precision Performance: The pressure-compensated metering cartridge maintains a constant set flow regardless of downstream load variations, delivering stable and repeatable actuator speeds essential for synchronized motion sequences.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with hardened spool and sleeve components that resist wear, contamination, and pressure spikes up to the rated 315 bar.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM standards, including CETOP 3 / ISO 4401-03 / NG6 port patterns, enabling drop-in replacement without manifold modification.
- Modular Integration: Sandwich-style body allows stacking directly between directional valves and subplates, reducing piping, leak points, and overall system footprint.
- Fine Adjustment: Calibrated manual adjustment screw with positive locking nut provides precise, vibration-resistant flow setting across the full metering range.
Typical
PRODUCT IMAGES

ATOS HQ-012 52 Modular Flow Control 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 HQ-012 52 Solenoid Directional Valve. This Italian-made 12V DC hydraulic component features a spool-type design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.