Product Overview
The Rexroth LC 25 DB20D74/ (Material No. R900912552) is a high-performance two-stage pressure control cartridge valve engineered for demanding industrial hydraulic systems. Manufactured by Bosch Rexroth, this valve functions as a pilot-operated pressure relief cartridge designed to limit system pressure by diverting excess flow to the tank when the preset pressure threshold is reached. The LC series cartridge design enables direct installation into a machined manifold block, eliminating the need for separate subplates and reducing leakage paths. The DB20D74 pressure adjustment element provides precise, repeatable pressure control across the full operating range, making this valve suitable for high-pressure circuits requiring stable and accurate pressure regulation.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Pressure Control Cartridge Valve (Pilot-Operated Relief Function) |
| Model Designation | LC 25 DB20D74/ / R900912552 |
| Nominal Size | NG25 (Cartridge Size 25) |
| Operating Pressure | Up to 315 bar (standard industrial grade, dependent on pressure adjustment element) |
| Pressure Adjustment | DB20D74 pilot stage — adjustable pressure setting with locknut |
| Mounting & Connection | Cartridge mounting per ISO 7368 / Rexroth standard cavity for NG25 |
| Sealing | NBR (Buna-N) standard; FKM available on request |
| Fluid Compatibility | Mineral oil based hydraulic fluids per DIN 51524; HFC/HFD on request |
Engineering Features & Advantages
- Precision Pressure Regulation: The pilot-operated two-stage design delivers accurate and repeatable pressure control with minimal hysteresis, ensuring stable system pressure even under varying flow demands.
- Compact Cartridge Design: The slip-in cartridge construction allows direct integration into manifold blocks, reducing installation space, piping complexity, and potential leak points compared to inline-mounted valves.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with hardened and ground spool and seat components for extended service life and resistance to contamination-induced wear.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original Rexroth OEM standards, ensuring drop-in replacement without modification to existing cavities or manifolds.
- Fast Response: Optimized pilot stage geometry provides rapid opening and closing characteristics, protecting downstream components from pressure spikes and overloads.
Typical Industrial Applications
This Rexroth LC 25 DB20D74/ pressure control cartridge valve is widely deployed in high-pressure hydraulic systems across heavy industry. Common applications include plastic injection molding machines requiring precise clamp and injection pressure control, metallurgical presses and rolling mills where overload protection is critical, construction and marine hydraulic systems operating under variable load conditions, and CNC machine tools demanding stable and repeatable pressure regulation for accurate positioning and
PRODUCT IMAGES
Rexroth LC 25 DB20D74/ / R900912552 Pressure Control 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 DB20D74/ / R900912552 Pilot Operated Check Valve. This German-made hydraulic valve features a poppet design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.