Product Overview
The Rexroth LFA 50 RF-7X/F18 (Material Number R901129688) is a high-precision control cover designed for use with two-way cartridge valves in industrial hydraulic systems. As part of the Rexroth LFA series, this component functions as a flow control cover, enabling precise regulation of fluid flow when paired with a compatible cartridge valve insert. The “50” size designation indicates an NG50 (nominal size 50) interface, while the “RF” configuration denotes a flow control function with a pressure-compensated or throttle-based metering design. The “7X” series represents the current generation of Rexroth modular valve technology, ensuring backward compatibility and long-term availability. This control cover is engineered to mount directly onto standard cartridge valve cavities, providing a compact, leak-free solution for directional, pressure, and flow control functions within manifold-based hydraulic circuits. Its robust construction and precision-machined internal passages make it ideal for demanding industrial applications requiring reliable flow regulation and repeatable performance.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Hydraulic Valve – Control Cover for Cartridge Valve (Flow Control) |
| Model Designation | LFA 50 RF-7X/F18 / R901129688 |
| Nominal Size | NG50 (SAE / ISO 7368 standard cavity) |
| Function Type | Flow Control (RF – throttle / pressure-compensated metering) |
| Operating Pressure | Up to 350 bar (standard industrial grade, depending on cartridge valve insert) |
| Flow Capacity | Optimized for NG50 cartridge valves (typical flow range up to 450 L/min) |
| Mounting & Connection | Direct mounting on ISO 7368 / DIN 24342 cavity; manifold or block installation |
| Sealing | O-ring sealed interfaces (NBR standard, optional FKM for high-temperature) |
| Adjustment | Manual adjustment via set screw / optional locknut for flow setting retention |
| Body Material | High-strength cast iron / steel alloy, phosphated and corrosion-protected |
Engineering Features & Advantages
- Precision Flow Metering: The RF flow control design integrates a throttle or pressure-compensated metering element that maintains consistent flow rates independent of load fluctuations, ensuring repeatable actuator speeds and process stability.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with robust construction and wear-resistant internal components for extended service life.
- 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
Its robust construction and precision-machined internal passages make it ideal for demanding industrial applications requiring reliable flow regulation and repeatable performance.
PRODUCT IMAGES
REXROTH LFA 50 RF-7X/F18 / R901129688 Control Cover for Cartridge Valve (Flow Control)
⚡ 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 LFA 50 RF-7X/F18 / R901129688 Pilot Operated Check Valve. This Germany-made hydraulic component features a robust poppet design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.