Product Overview
The Rexroth Z2FS22-8-31/S2 (Material Number R900443176) is a high-performance twin throttle check valve designed for precise flow control in industrial hydraulic systems. As part of the Rexroth Z2FS series, this modular valve is engineered to regulate the flow rate of hydraulic fluid in two directions independently, providing accurate speed control of actuators such as cylinders and motors. The valve features a sandwich plate design that allows direct mounting between a directional control valve and its subplate, eliminating the need for additional piping and simplifying system integration. With a nominal size of NG22 (DIN 24340), this twin throttle check valve is suitable for high-flow applications requiring reliable and repeatable metering performance.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Twin Throttle Check Valve (Flow Control & Modular Valve) |
| Model Designation | Z2FS22-8-31/S2 / R900443176 |
| Nominal Size | NG22 (DIN 24340) |
| Operating Pressure | Up to 315 bar (standard industrial grade) |
| Flow Rate Range | Up to 450 L/min (dependent on throttle setting) |
| Adjustment Type | Manual adjustment with locknut (S2 version) |
| Mounting & Connection | Sandwich plate design, ISO 4401 / DIN 24340 standard interface |
| Seal Material | NBR (Buna-N) standard, compatible with mineral oil-based hydraulic fluids |
Engineering Features & Advantages
- Precision Performance: Twin throttle design allows independent flow adjustment in both directions, enabling accurate speed control of bidirectional actuators and ensuring repeatable metering for critical motion sequences.
- Integrated Check Function: Each throttle path includes a check valve that permits free flow in one direction while forcing fluid through the throttle in the opposite direction, providing bypass-free reverse flow and efficient system operation.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with robust construction that resists contamination and maintains stable performance over extended service intervals.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM standards, ensuring drop-in replacement without modification to existing manifolds or piping.
- Modular Sandwich Design: Compact sandwich plate construction simplifies installation between directional valves and subplates, reducing leakage points and minimizing space requirements in dense hydraulic power units.
Typical Industrial Applications
This twin throttle check valve is widely used in heavy industrial scenarios requiring precise flow control and reliable bidirectional metering. Typical applications include plastic injection molding machines for mold clamping and injection speed regulation, metallurgical presses for controlled ram advancement and retraction, CNC machine tools for accurate feed axis movement, and construction & marine hydraulics for smooth operation of cylinders and motors under varying load conditions. Its
PRODUCT IMAGES
REXROTH Z2FS22-8-31/S2 / R900443176 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.
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- 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 Z2FS22-8-31/S2 Throttle Valve. This Germany-made hydraulic component features a precise flow control design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.