Product Overview
The Rexroth LC 40 B20D70 (Material No. R900938006) is a two-stage logic cartridge valve engineered for high-flow, high-pressure hydraulic control in industrial power units. As a member of the Rexroth LC series, this cartridge insert functions as a pressure-compensated, pilot-operated seat valve that mounts directly into a standardized cavity block, enabling compact manifold-based circuit design. The valve operates on a differential-area principle: the main poppet is held closed by system pressure acting on its larger control face, while a pilot signal applied to the control chamber unbalances the forces to open the main flow path. With a nominal size of NG40, the LC 40 B20D70 is specified for flow capacities in the range of 400 L/min and is rated for continuous service at working pressures up to 420 bar, making it suitable for demanding press, injection molding, and heavy machinery circuits where leak-free load holding and fast response are essential.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Hydraulic Valve — Logic Cartridge Valve (Flow Control & Modular Valve) |
| Model Designation | LC 40 B20D70 |
| Material / Order Number | R900938006 |
| Nominal Size | NG40 (ISO 7368 / DIN 24342 cavity) |
| Operating Pressure | Up to 420 bar (standard industrial grade) |
| Nominal Flow Capacity | Approx. 400 L/min (NG40 class) |
| Function / Spool Configuration | Pilot-operated logic element, poppet type, two-stage |
| Mounting & Connection | Standard ISO 7368 cartridge cavity, slip-in installation with cover plate |
| Sealing | NBR / FKM options per media and temperature |
Engineering Features & Advantages
- Precision Performance: Pilot-operated poppet design delivers fast, repeatable opening and closing with minimal pressure drop at full flow, ensuring accurate flow control and reliable load holding in manifold circuits.
- Leak-Free Seating: Metal-to-metal poppet seat provides near-zero leakage in the closed position, ideal for clamping, holding, and safety-related functions.
- Compact Modular Integration: Slip-in cartridge format reduces manifold size and piping, allowing multiple functions to be stacked in a single block for space-saving system architecture.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with hardened and ground internal components for long service life.
- Direct Fit Replacement: Precision-manufactured to original Rexroth specifications for direct replacement, minimising downtime and eliminating fitment issues.
Typical Industrial Applications
R900938006) is a two-stage logic cartridge valve engineered for high-flow, high-pressure hydraulic control in industrial power units.
PRODUCT IMAGES
Rexroth LC 40 B20D70/ / R900938006 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 40 B20D70/ / R900938006 Check Valve. This German-made hydraulic component features a poppet design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.