Product Overview
The Rexroth ZDB 6 VA2-4X/100V (Material No. R900409889) is a direct-operated pressure relief valve from the proven ZDB series, designed in a sandwich (module) plate configuration for manifold and stacking assembly. It functions as a pilot pressure relief valve within hydraulic power units and control blocks, limiting system pressure by discharging excess flow to the tank when the set pressure is reached. The valve features a poppet-type seating design with a adjustable pressure setting, providing reliable overpressure protection, accurate pressure limitation, and stable operation in continuous industrial duty. Its compact 6-size (NG6 / CETOP 3) interface allows direct mounting between directional control valves and subplates without additional piping.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Pressure Control Valve – Direct-Operated Pressure Relief Valve (Sandwich Plate Design) |
| Model Designation | ZDB 6 VA2-4X/100V (R900409889) |
| Nominal Size | NG6 (CETOP 3 / ISO 4401-03) |
| Pressure Setting | 100 bar (adjustable via set screw) |
| Operating Pressure | Standard Industrial Grade (up to 315 bar system pressure, dependent on circuit) |
| Actuation Type | Direct mechanical spring-loaded poppet, manual adjustment |
| Mounting & Connection | Sandwich plate, ISO 4401-03-02-0-05 interface, 4 x M5 mounting bolts |
| Hydraulic Fluid | Mineral oil HL/HLP per DIN 51524, viscosity range 10–500 mm²/s |
| Seal Material | NBR (standard), FKM available on request |
Engineering Features & Advantages
- Precision Pressure Limitation: Direct-operated poppet design delivers fast response and accurate pressure control, protecting downstream components from pressure spikes and overload.
- Sandwich Plate Construction: Compact NG6 module mounts directly between directional valves and subplates, reducing piping, leak points, and installation time in manifold assemblies.
- Adjustable Set Pressure: Spring-loaded adjustment screw with locknut allows precise field setting of the 100 bar relief pressure to match specific circuit requirements.
- Industrial Reliability: Hardened, lapped seating surfaces ensure low leakage and long service life under continuous operation in severe industrial conditions.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original Rexroth ZDB series valves and OEM manifold standards.
Typical Industrial Applications
PRODUCT IMAGES
REXROTH ZDB 6 VA2-4X/100V / R900409889 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 ZDB 6 VA2-4X/100V / R900409889 Pilot Operated Pressure Relief Valve. This German-made hydraulic component features a poppet design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.
