Product Overview
The Rexroth Z2FS6-5-46/2QV (Material No. R900476838) is a high-precision twin throttle check valve designed for sandwich plate mounting within modular hydraulic control systems. Manufactured by Bosch Rexroth, a global benchmark in industrial hydraulics, this valve functions as a dual-line flow control element that independently regulates the return or supply flow of two separate actuator lines while permitting unrestricted reverse flow through integrated check valves. The Z2FS6 series is engineered for precise velocity control of double-acting cylinders and hydraulic motors, ensuring synchronized motion and stable load handling in demanding industrial circuits. Its modular design allows direct stacking between a directional control valve and a subplate, eliminating the need for additional piping and minimizing leakage points.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Hydraulic Valve – Twin Throttle Check Valve (Modular / Sandwich Plate) |
| Model Designation | Z2FS6-5-46/2QV / R900476838 |
| Size / Nominal Diameter | NG6 (CETOP 3 / ISO 4401-03) |
| Operating Pressure | Up to 315 bar (max. working pressure) |
| Flow Rate | Up to 80 L/min (dependent on throttle setting) |
| Adjustment Type | Manual adjustment via set screw with lock nut (2QV configuration) |
| Mounting & Connection | Sandwich plate mounting per ISO 4401-03 / CETOP 3 interface |
| Seal Material | NBR (Buna-N) – compatible with mineral oil based hydraulic fluids |
| Fluid Temperature Range | -20 °C to +80 °C |
Engineering Features & Advantages
- Dual-Line Precision Metering: Two independently adjustable throttle cartridges allow exact flow regulation in both actuator lines, enabling precise velocity control and synchronization of double-acting cylinders.
- Integrated Check Valves: Each throttle path includes a free-flow check valve that permits unrestricted reverse flow, ensuring rapid return strokes and preventing unintended flow starvation.
- Modular Sandwich Construction: The NG6 sandwich plate design stacks directly between directional valves and subplates, reducing piping complexity, installation time, and potential leak points.
- Pressure-Compensated Stability: The throttle geometry maintains consistent flow characteristics across varying pressure differentials, delivering stable actuator motion under fluctuating loads.
- Industrial Reliability: Built for continuous operation under severe industrial conditions with hardened steel internal components and robust housing construction.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original REXROTH standards, allowing straightforward retrofit into existing hydraulic systems without rework.
Typical Industrial Applications
The Z2FS6 series is engineered for precise velocity control of double-acting cylinders and hydraulic motors, ensuring synchronized motion and stable load handling in demanding industrial circuits.
PRODUCT IMAGES
REXROTH Z2FS6-5-46/2QV / R900476838 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 Z2FS6-5-46/2QV / R900476838 Hydraulic Throttle Valve. This Germany-made hydraulic component features a sandwich plate design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.