Product Overview
The Rexroth 04114903 (R930007648) is a pilot-operated check valve designed for leak-free load holding and controlled load lowering in industrial hydraulic systems. As a member of Rexroth’s modular valve family, this component functions as a pilot-controlled, spring-loaded check valve that permits free flow in one direction and blocks reverse flow until a sufficient pilot pressure signal is applied to open the main poppet. This design enables precise load locking, prevents drift in holding circuits, and allows controlled decompression of trapped pressure. The valve is engineered for direct integration into standardized modular valve stacks or as a line-mounted component, delivering reliable performance in demanding hydraulic circuits where load security and controlled actuation are critical.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Pilot-Operated Check Valve (Hydraulic Valve) |
| Model Designation | 04114903 / R930007648 |
| Manufacturer | Rexroth (Bosch Rexroth) |
| Operating Pressure | Standard Industrial Grade (Up to 350 bar rated) |
| Pilot Ratio | Standard pilot-to-load ratio for reliable opening under load |
| Mounting & Connection | Standard ISO / Modular Interface (Rexroth modular valve pattern) |
| Sealing | Leak-free poppet seat design for zero internal leakage |
| Flow Direction | Free flow one direction; blocked reverse until pilot pressure applied |
Engineering Features & Advantages
- Precision Performance: The pilot-operated poppet design ensures leak-free load holding and enables controlled decompression, preventing shock loads and ensuring smooth actuator motion during load lowering.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with hardened poppet and seat surfaces for long service life and resistance to contamination.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM standards, allowing drop-in replacement in existing Rexroth modular valve stacks without modification.
- Modular Integration: Designed for seamless stacking with other Rexroth modular valves, reducing piping complexity and installation time in centralized hydraulic power units.
- Load Security: Prevents unintended movement of actuators in the event of pressure loss or hose rupture, enhancing system safety and operational integrity.
Typical Industrial Applications
This pilot-operated check valve is widely used in heavy industrial scenarios requiring reliable load holding and controlled motion, including: plastic injection molding machines for mold clamping and injection axis locking; metallurgical presses for holding pressure during forming cycles; construction and marine hydraulics for outrigger and boom locking; and CNC machine tools for precise axis positioning and preventing drift during machining operations.
PRODUCT IMAGES
REXROTH 04114903 / R930007648 Pilot-Operated Check Valve
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- 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 04114903 / R930007648 Solenoid Directional Valve. This Germany-made 24V DC hydraulic component features a 4-way 3-position design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.