Product Overview
The Rexroth ZDB6VP2-42/100V (Material No. R900409933) is a direct-operated pressure relief valve from the proven ZDB6 series, designed for precise pressure limitation and system protection in industrial hydraulic circuits. Configured in the “VP” variant, this valve combines a sandwich (intermediate) plate mounting design with an integrated pressure relief function, allowing it to be stacked directly between a directional valve and its subplate without additional piping. The valve limits the operating pressure of the connected system to a preset value of 100 bar by directing excess flow back to tank once the set pressure is reached, thereby safeguarding pumps, actuators, and downstream components against overload. Its robust spool-and-spring construction, adjustable pressure setting, and leak-tight seating deliver dependable, repeatable performance in continuous-duty hydraulic power units and machine tool systems.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Pressure Control Valve (Direct-Operated Pressure Relief Valve) |
| Model Designation | ZDB6VP2-42/100V |
| Material Number | R900409933 |
| Nominal Size | NG6 (CETOP 3 / ISO 4401-03 size 6) |
| Pressure Setting | 100 bar (preset, adjustable via set screw) |
| Operating Pressure | Standard Industrial Grade (up to 315 bar rated) |
| Mounting & Connection | Sandwich plate design, ISO 4401-03 / CETOP 3 interface |
| Actuation | Direct spring-loaded spool, manual pressure adjustment |
| Sealing | NBR seals (FKM available on request) |
Engineering Features & Advantages
- Precision Pressure Limiting: Direct-operated spool responds rapidly to pressure surges, maintaining stable system pressure and protecting sensitive hydraulic components from overload.
- Sandwich Plate Integration: The ZDB6VP2 design mounts between a directional valve and subplate, eliminating external piping, reducing leak points, and simplifying manifold and circuit assembly.
- Adjustable Set Pressure: Pressure setting is field-adjustable via a protected set screw, enabling fine tuning to match specific circuit requirements without valve replacement.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with hardened spool and spring components ensuring long service life and consistent performance.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original Rexroth ZDB6 series valves and standard CETOP 3 interfaces.
Typical Industrial Applications
PRODUCT IMAGES


REXROTH ZDB6VP2-42/100V / R900409933 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 REXROTH ZDB6VP2-42/100V / R900409933 Pilot Operated Pressure Relief Valve. This German-made hydraulic component features a pilot-operated design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.





