Product Overview
The Rexroth Z2FS 6 A2-46/2QV (Material Number R900439389) is a high-precision twin throttle check valve from the renowned Rexroth Z2FS series, engineered for accurate flow control in industrial hydraulic systems. This modular sandwich-style valve is designed to regulate the flow rate of a hydraulic circuit by throttling the fluid in one or both directions, while integrated check valves permit free reverse flow. The Z2FS 6 A2-46/2QV is a size 6 (NG6 / CETOP 3) component featuring two independently adjustable throttle cartridges, making it ideal for meter-in or meter-out speed control of actuators. With its robust construction and proven Rexroth engineering, this twin throttle check valve ensures precise, repeatable flow regulation and reliable performance in demanding industrial environments.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Hydraulic Valve – Twin Throttle Check Valve (Modular / Sandwich Plate Design) |
| Model Designation | Z2FS 6 A2-46/2QV |
| Material Number | R900439389 |
| Nominal Size | NG6 (CETOP 3 / ISO 4401-03) |
| Operating Pressure | Up to 315 bar (standard industrial grade) |
| Flow Control | Dual adjustable throttle cartridges with integrated check valves for free reverse flow |
| Adjustment Type | Manual spindle adjustment with locknut (2QV configuration) |
| Mounting & Connection | Sandwich plate mounting per ISO 4401-03 / CETOP 3 interface |
| Seal Material | NBR (standard); compatible with mineral oil-based hydraulic fluids |
| Fluid Temperature Range | -20 °C to +80 °C (standard NBR seals) |
Engineering Features & Advantages
- Precision Dual Throttle Control: Two independently adjustable throttle cartridges allow accurate, repeatable metering of flow in both actuator directions, enabling fine-tuned speed control for meter-in and meter-out circuits.
- Integrated Check Valves: Each throttle path incorporates a check valve that permits unrestricted free flow in the reverse direction, ensuring rapid return strokes without compromising controlled motion.
- Industrial Reliability: Constructed for continuous duty with durable, corrosion-resistant materials and proven engineering for maximum system uptime.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original REXROTH OEM standards, ensuring drop-in replacement without modification to existing manifolds or piping.
Typical Industrial Applications
With its robust construction and proven Rexroth engineering, this twin throttle check valve ensures precise, repeatable flow regulation and reliable performance in demanding industrial environments.
PRODUCT IMAGES
REXROTH Z2FS 6 A2-46/2QV / R900439389 Twin Throttle Check 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 Z2FS 6 A2-46/2QV / R900439389 Throttle Check Valve. This Germany-made hydraulic component features a sandwich plate design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.