Product Overview
The Parker R4V03-5331011G0QA125 (also referenced as 026-42911-H) is a pilot operated pressure relief valve from Parker’s R4V series of hydraulic pressure control valves. It functions as a two-stage pressure limiting device: a small pilot stage senses system pressure and controls the main poppet, which discharges excess flow to tank once the set pressure is reached. This design delivers accurate, stable pressure regulation with minimal override pressure rise, protecting pumps, cylinders, and downstream components from overpressure in continuous industrial duty. The valve is suited for manifold or inline mounting within high-pressure hydraulic power units and machine circuits.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Hydraulic Valve – Pilot Operated Pressure Relief Valve (Pressure Control Valve) |
| Model Designation | R4V03-5331011G0QA125 / 026-42911-H |
| Series / Size | Parker R4V Series, Size 03 (NG6 / CETOP 3 interface) |
| Operating Pressure | Standard Industrial Grade (up to rated 350 bar, pressure-limited by adjustment range) |
| Pressure Adjustment | Adjustable via protected setting screw with locknut; pilot-stage spring determines pressure range |
| Mounting & Connection | Standard ISO / Manufacturer Interface – subplate or manifold mounting per NG6 / CETOP 3 pattern |
Engineering Features & Advantages
- Precision Performance: Two-stage pilot operated design provides accurate pressure setting, low pressure override, and stable regulation even at high flow rates, minimizing system shock and heat generation.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with hardened internal components and a balanced poppet that resists contamination-related sticking.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM standards, allowing drop-in replacement of the R4V03-5331011G0QA125 / 026-42911-H without circuit modification.
Typical Industrial Applications
Commonly deployed as a system safety and pressure-limiting valve in plastic injection molding machines, metallurgical presses, construction and marine hydraulic systems, and CNC machine tool power packs, where reliable overpressure protection and precise pressure control are essential.
PRODUCT IMAGES
PARKER R4V03-5331011G0QA125 / 026-42911-H 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 R4V03-5331011G0QA125 / 026-42911-H 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.
