Product Overview
The PARKER R4V03-5353011G0QA525 is a pilot operated pressure relief valve from Parker’s R4V series, engineered to protect hydraulic systems from excessive pressure by diverting flow back to tank when the preset cracking pressure is exceeded. The two-stage pilot operated design combines a balanced main spool with a precision pilot stage, delivering accurate pressure control, minimal pressure override, and stable operation even under high flow conditions. The R4V03 size 03 (NG10 / CETOP 5) interface makes it a direct drop-in solution for manifold and subplate mounted industrial circuits, where it serves as the primary system safety and pressure limiting device.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Pilot Operated Pressure Relief Valve (Pressure Control Valve) |
| Model Designation | R4V03-5353011G0QA525 |
| Series / Size | Parker R4V Series, Size 03 (NG10 / CETOP 5) |
| Operating Pressure | Standard Industrial Grade (Up to 350 bar rated) |
| Pressure Adjustment | Adjustable via protected setting screw with locknut |
| Mounting & Connection | Subplate / Manifold Mounting, ISO 4401 / CETOP 5 Interface |
| Seal Material | NBR (standard); FKM available for high-temperature service |
Engineering Features & Advantages
- Precision Performance: Two-stage pilot operated spool design provides accurate pressure limiting with low pressure override and minimal hysteresis across the full flow range.
- Stable Pressure Control: Balanced main spool minimizes the influence of back pressure and flow forces, ensuring consistent cracking and reseat behavior in dynamic circuits.
- Industrial Reliability: Hardened, precision-lapped spool and sleeve assembly built for continuous operation under severe industrial conditions and high duty cycles.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM Parker R4V03 mounting patterns and manifold interfaces.
Typical Industrial Applications
Ideally suited for system pressure protection and pressure limiting in plastic injection molding machines, metallurgical presses, hydraulic power units, CNC machine tools, and general industrial manifold circuits requiring reliable pilot operated relief performance.
PRODUCT IMAGES
PARKER R4V03-5353011G0QA525 Pilot Operated Pressure Relief 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 PARKER R4V03-5353011G0QA525 Pilot-Operated Pressure Relief Valve. This Germany-made hydraulic component features a precise pressure control design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.
