Product Overview
The Rexroth SV 30 PA1-42 (Material No. R900587558) is a pilot-operated check valve designed for leak-free load holding and controlled flow in hydraulic systems. As part of Rexroth’s modular valve program, this unit is a sandwich-style check valve that permits free flow in one direction while blocking reverse flow until a pilot pressure signal is applied to open the poppet. This design enables reliable load locking, prevents drift in vertical actuators, and allows controlled lowering or retraction when the pilot line is pressurized. The valve is engineered for integration into standardized modular stack assemblies, making it a critical component in high-pressure industrial circuits where safety, precision, and repeatability are essential.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Pilot-Operated Check Valve (Modular / Sandwich Valve) |
| Model Designation | SV 30 PA1-42 / R900587558 |
| Operating Pressure | Up to 315 bar (standard industrial grade) |
| Pilot Pressure Ratio | Standard Rexroth pilot ratio (e.g., 1:4.5 or 1:8 depending on configuration) |
| Mounting & Connection | ISO 4401 / DIN 24340 standard interface, modular stack mounting |
| Nominal Size | NG10 (CETOP 5) / NG16 / NG25 (dependent on series) |
| Sealing Material | NBR (Buna-N) standard; FKM optional for high-temperature service |
| Fluid Compatibility | Mineral oil based hydraulic fluids (HL, HLP, HVLP), biodegradable fluids on request |
Engineering Features & Advantages
- Precision Performance: The pilot-operated poppet design ensures zero leakage in the blocked direction, providing reliable load holding and preventing actuator drift in demanding industrial circuits.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with hardened poppet and seat for extended 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 stack assemblies without modification.
- Modular Integration: Sandwich-style construction enables compact system design and easy combination with directional, pressure, and flow control valves in a single manifold block.
- Controlled Decompression: Optional pilot configuration allows smooth, controlled opening to minimize pressure spikes and system shock during load lowering.
Typical Industrial Applications
This pilot-operated check valve is widely used in heavy industrial scenarios such as plastic injection molding machines for mold clamping and injection unit holding, metallurgical presses for load locking and controlled descent, construction and marine hydraulics for outrigger and crane load holding, and CNC machine tools for accurate axis positioning and prevention of thermal drift. Its robust design also
PRODUCT IMAGES
REXROTH SV 30 PA1-42 / R900587558 Pilot-Operated Check 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 SV 30 PA1-42/ / R900587558 Pilot Operated Check Valve. This German-made hydraulic component features a robust poppet design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.