Product Overview
The Rexroth LC 25 A20E7X (Material No. R900910270) is a two-stage logic cartridge valve engineered for high-flow, high-pressure hydraulic control within modular manifold systems. As a 25 mm nominal size (NG25) cartridge element, it functions as a pressure and flow control insert that mounts directly into a standardized receiving cavity machined into a control block or sandwich plate. The valve operates on a poppet-and-sleeve principle: a spring-biased main poppet seals against the seat until pilot pressure applied through the control cover (area ratio A20) overcomes the spring force and system pressure acting on the main flow area, thereby opening the main passage. This area ratio of approximately 20:1 enables relatively low pilot pressure to command very large main flow rates, making the LC series a preferred solution for compact, high-capacity directional, pressure, and unloading circuits. The LC 25 A20E7X is part of the Rexroth LC series of logic cartridge valves, designed for use with standard control covers (LFA series) that determine the specific pilot function — directional, pressure relief, or unloading — while the cartridge itself provides the main stage sealing and flow capability.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Logic Cartridge Valve (Two-Stage, Poppet Type) — Flow Control & Modular Valve |
| Model Designation | LC 25 A20E7X |
| Material Number | R900910270 |
| Nominal Size | NG25 (25 mm cartridge cavity) |
| Area Ratio | A20 (approximately 20:1 pilot-to-main area ratio) |
| Operating Pressure | Up to 420 bar (standard Rexroth LC series rating) |
| Flow Capacity | High flow, up to approximately 400 L/min depending on circuit configuration |
| Mounting & Connection | Standard ISO 7368 / Rexroth NG25 cartridge cavity; used with LFA control cover |
| Sealing | Metal-to-metal seat with O-ring sealed sleeve |
| Hydraulic Fluid | Mineral oil based hydraulic fluids (HL, HLP, HLP-D, HV) |
Engineering Features & Advantages
- High Area Ratio Pilot Control: The A20 area ratio allows a low-pressure pilot signal to reliably control high main-stage flow and pressure, reducing pilot circuit power requirements and enabling compact control cover selection.
- Industrial Reliability: Designed for dependable long-term operation in demanding industrial environments, with quality bearings and sealing systems ensuring extended maintenance intervals.
- Direct Fit Replacement: Precision-manufactured to original Rexroth specifications for direct replacement, minimising downtime and eliminating fitment issues.
Typical Industrial Applications
R900910270) is a two-stage logic cartridge valve engineered for high-flow, high-pressure hydraulic control within modular manifold systems.
PRODUCT IMAGES
Rexroth LC 25 A20E7X/ / R900910270 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 25 A20E7X/ / R900910270 Check Valve. This German-made hydraulic component features a pilot-operated design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.