Product Overview
The HYDAC 3109229 / 25N21 is a high-performance solenoid-operated directional control valve engineered for precise hydraulic flow management in demanding industrial systems. Manufactured by HYDAC, a globally recognized leader in fluid power technology, this valve utilizes a robust spool-type design actuated by a wet-pin AC/DC solenoid, enabling reliable switching of hydraulic circuits between flow paths. The 25N21 designation indicates a nominal NG6 (CETOP 3 / ISO 4401-03) size valve with a specific spool configuration, providing dependable directional control for actuator extension, retraction, and holding functions. Its compact, leak-resistant construction makes it an ideal choice for integration into centralized hydraulic power units, manifold blocks, and OEM machinery requiring precise, repeatable valve actuation.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Solenoid Directional Control Valve (Spool Type) |
| Model Designation | HYDAC 3109229 / 25N21 |
| Operating Pressure | Up to 350 bar (standard industrial grade) |
| Nominal Flow Rate | Up to 60 L/min (NG6 / CETOP 3) |
| Mounting & Connection | ISO 4401-03 / CETOP 3 / NG6 subplate interface |
| Actuation Type | Wet-pin solenoid, push-type, spring return |
| Spool Configuration | 25N21 spool type (specific flow path per HYDAC standard) |
| Seal Material | NBR / FKM (dependent on fluid compatibility) |
Engineering Features & Advantages
- Precision Spool Metering: The 25N21 spool geometry ensures accurate flow direction control with minimal internal leakage, enabling precise actuator positioning and reliable circuit switching in high-cycle industrial operations.
- Robust Solenoid Actuation: Wet-pin solenoid design provides high switching force, fast response times, and excellent resistance to contamination, ensuring consistent valve actuation even under fluctuating pressure and temperature conditions.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with a hardened spool and sleeve assembly that minimizes wear and extends service life in high-pressure hydraulic systems.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM standards, including ISO 4401-03 mounting patterns, allowing drop-in replacement without manifold or piping modification.
- Leak-Resistant Construction: Precision-machined spool-to-bore clearances and high-quality seals minimize internal and external leakage, improving system efficiency and reducing fluid loss.
Typical Industrial Applications
This HYDAC solenoid directional valve is widely deployed in heavy industrial scenarios including plastic injection molding machines for mold clamping and injection sequence control, metallurgical presses for ram advance and ret
PRODUCT IMAGES
HYDAC 3109229 / 25N21 Solenoid 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.
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- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the genuine HYDAC 3109229 / 25N21 Solenoid Directional Spool Valve. This German-made 24V DC hydraulic component features a robust spool design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.