Product Overview
The HOERBIGER PRE-U is a direct-operated pressure relief valve engineered for precise hydraulic pressure limitation and overload protection in industrial systems. Manufactured by HOERBIGER, a globally recognized authority in hydraulic and pneumatic control technology, the PRE-U series operates on a spring-loaded poppet principle: when system pressure exceeds the set value, the poppet lifts off its seat, diverting excess flow to the tank port and thereby maintaining the circuit at a safe, stable working pressure. This valve serves as a critical safety and pressure-regulating component in hydraulic power units, manifolds, and compact control blocks, delivering fast response and reliable reseating characteristics across demanding duty cycles.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Pressure Control Valve (Direct-Acting Pressure Relief Valve) |
| Model Designation | PRE-U |
| Manufacturer | HOERBIGER |
| Operating Pressure | Standard Industrial Grade (Up to rated bar, adjustable via spring preload) |
| Actuation Principle | Spring-loaded poppet / seat design with direct pressure sensing |
| Mounting & Connection | Standard ISO / Manufacturer Interface (cartridge or inline configuration) |
| Adjustment Method | Manual set screw with locknut for precise cracking pressure setting |
| Hydraulic Fluid Compatibility | Mineral-based hydraulic oils per standard industrial specifications |
Engineering Features & Advantages
- Precision Pressure Limiting: The direct-acting poppet design provides accurate cracking pressure control with minimal override, ensuring consistent system protection and repeatable reseating behavior.
- Fast Dynamic Response: Direct pressure sensing without pilot stages delivers rapid opening upon pressure spikes, safeguarding downstream components from transient overloads.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with hardened seating surfaces and robust spring elements resistant to fatigue and contamination.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original HOERBIGER OEM standards, allowing drop-in replacement without manifold modification.
- Compact Integration: Space-efficient body design suitable for dense hydraulic manifolds and compact power units where installation envelope is limited.
Typical Industrial Applications
The HOERBIGER PRE-U pressure relief valve is deployed across a wide range of heavy industrial scenarios, including plastic injection molding machines where precise mold clamping and injection pressure control are essential; metallurgical presses and rolling mill stands requiring reliable overload protection; construction and marine hydraulic systems operating under variable load and temperature conditions; and CNC machine tools and hydraulic power units where stable pressure regulation ensures repeatable machining accuracy and system safety.
PRODUCT IMAGES
HOERBIGER PRE-U Pressure Relief 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 HOERBIGER PRE-U Pressure Relief Valve. This German-made hydraulic component features a precise pressure control design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.
