Product Overview
The Danfoss RV5-10-S-0-20 (Part No. 889566) is a direct-acting, spring-loaded pressure relief valve engineered for precise overpressure protection in industrial hydraulic circuits. As a member of the Danfoss RV5 series, this valve operates on a proven poppet-and-spring working principle, automatically opening to divert excess flow to tank when system pressure exceeds the adjustable set point, thereby safeguarding pumps, actuators, and downstream components from pressure spikes and overload conditions. With a compact cartridge-style body and a 10-size cavity interface, the RV5-10-S-0-20 is designed for direct integration into manifold blocks and hydraulic power units, delivering reliable pressure limiting, system unloading, and back-pressure control functions across a wide range of demanding industrial applications.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Hydraulic Valve — Pressure Control Valve (Direct-Acting Pressure Relief Valve) |
| Model Designation | RV5-10-S-0-20 / 889566 |
| Manufacturer | Danfoss |
| Valve Size / Cavity | Size 10 (cartridge-style, industry-standard 10-size cavity) |
| Actuation Type | Direct-acting, spring-loaded poppet with manual adjustment |
| Operating Pressure | Standard Industrial Grade (Up to rated bar, adjustable set point) |
| Adjustment Style | Screw-type adjustment with locknut (S configuration) |
| Mounting & Connection | Standard ISO / Manufacturer Interface — cartridge mounting into manifold cavity |
| Seal Material | NBR (Buna-N) standard, compatible with mineral-based hydraulic fluids |
| Fluid Compatibility | Mineral hydraulic oils, HLP/HM grades per DIN 51524 |
Engineering Features & Advantages
- Precision Pressure Control: Direct-acting poppet design provides fast, repeatable response to pressure transients, ensuring accurate cracking and reseating characteristics for reliable system overpressure protection.
- Adjustable Set Point: Screw-type adjustment with locknut allows fine tuning of the relief pressure to match specific circuit requirements, with stable performance maintained across the adjustment range.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with robust construction and wear-resistant internal components for extended service life.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original Danfoss standards, allowing straightforward retrofit into existing hydraulic systems without rework.
Typical Industrial Applications
With a compact cartridge-style body and a 10-size cavity interface, the RV5-10-S-0-20 is designed for direct integration into manifold blocks and hydraulic power units, delivering reliable pressure limiting, system unloading, and back-pressure control functions across a wide range of demanding industrial applications.
PRODUCT IMAGES

Danfoss RV5-10-S-0-20 / 889566 Pressure Relief Valve
âš¡ 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 Danfoss RV5-10-S-0-20 / 889566 Relief Valve. This Denmark-made hydraulic component features a direct-acting poppet design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.