Product Overview
The Rexroth LC 50 DB20E7X (Material Number: R900938039) is a high-performance two-stage logic cartridge valve designed for demanding industrial hydraulic systems. As a key component within Rexroth’s extensive range of directional spool valves, this logic cartridge valve functions as a pressure-compensated, pilot-operated directional control element. It is engineered to manage high flow rates with exceptional precision, acting as a main stage in complex hydraulic circuits. The “LC” designation indicates a logic cartridge valve, while “DB20” specifies the pilot valve type (a pressure relief valve) and “E7X” denotes the series. This valve is typically installed in a standardized receiving bore, allowing for compact manifold block designs and efficient system integration. Its primary role is to control the direction and pressure of hydraulic fluid in high-pressure industrial machinery, ensuring reliable operation and precise load handling.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Hydraulic Valve (Logic Cartridge Valve / Directional Spool Valve) |
| Model Designation | LC 50 DB20E7X / R900938039 |
| Operating Pressure | Up to 420 bar (6000 psi) nominal, depending on pilot stage |
| Mounting & Connection | Standard ISO 7368 / DIN 24342 Cartridge Mounting Interface |
| Nominal Size | NG 50 (SAE 2″) |
| Pilot Valve Type | DB20 (Pressure Relief Valve, Pilot Operated) |
| Flow Direction | Bi-directional (A to B, B to A) with pilot control |
| Seal Material | NBR (Nitrile Butadiene Rubber) / FKM (Viton) available |
Engineering Features & Advantages
- Precision Performance: The two-stage design with a DB20 pilot relief valve ensures accurate pressure control and smooth, stable operation, minimizing pressure overshoot and system shock.
- High Flow Capacity: The NG 50 size allows for substantial flow rates, making it ideal for high-power hydraulic systems without the need for multiple smaller valves.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, featuring a robust cartridge design that withstands high pressures and harsh environments.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM standards, ensuring drop-in replacement for Rexroth logic cartridge valves.
- Compact Manifold Design: The cartridge construction enables space-saving manifold block installations, reducing piping complexity and potential leak points.
- Versatile Control: Functions as a directional, pressure, or flow control valve depending on pilot configuration, offering flexibility in system design.
Typical Industrial Applications
This Rexroth logic cartridge valve is commonly employed in heavy-duty industrial scenarios, including
PRODUCT IMAGES
Rexroth LC 50 DB20E7X / R900938039 Logic Cartridge 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 LC 50 DB20E7X/ / R900938039 Pilot Operated Check Valve. This German-made hydraulic component features a leak-free poppet design, delivering reliable fluid control for heavy-duty industrial systems.