Product Overview
The SEWON-YUKEN MRA-01-B-30 is a modular pressure control valve engineered for precise system pressure regulation and overload protection in industrial hydraulic circuits. Manufactured by SEWON-YUKEN, a recognized name in modular hydraulic valve technology, this relief valve is designed as a sandwich-style (modular) component that mounts directly between a directional control valve and its subplate, eliminating the need for separate piping runs. The MRA-01-B-30 functions as a pilot-operated relief valve, sensing system pressure at the inlet port and opening a controlled flow path to the tank line once the preset cracking pressure is exceeded. This maintains circuit pressure at a safe, stable level and protects downstream components from pressure spikes. Its compact modular footprint, robust spool-and-poppet construction, and repeatable pressure setting make it a dependable choice for machine builders seeking clean, leak-resistant hydraulic manifold assemblies.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Hydraulic Valve — Pressure Control Valve (Modular Relief Valve) |
| Model Designation | MRA-01-B-30 |
| Manufacturer | SEWON-YUKEN |
| Valve Function | Pilot-operated pressure relief / pressure setting |
| Mounting Style | Modular sandwich mounting (between directional valve and subplate) |
| Nominal Size | 01 (ISO 4401 / CETOP 3 / NG6 interface) |
| Operating Pressure | Standard Industrial Grade (up to rated bar per size 01 modular range) |
| Pressure Adjustment | Adjustable via setting screw with locknut |
| Mounting & Connection | Standard ISO / Manufacturer Interface (CETOP 3 / NG6 port pattern) |
| Sealing | O-ring face sealing for leak-free modular stacking |
Engineering Features & Advantages
- Precision Pressure Control: Pilot-operated spool and poppet design delivers accurate, repeatable cracking and reseat pressure, keeping circuit pressure stable across varying flow demands.
- Modular Sandwich Construction: Mounts directly between the directional control valve and subplate, reducing piping, minimizing leak points, and simplifying manifold assembly and maintenance.
- Overload Protection: Rapid response to pressure surges safeguards pumps, cylinders, and downstream components from damaging pressure spikes.
- Industrial Reliability: Designed for dependable long-term operation in demanding industrial environments, with quality bearings and sealing systems ensuring extended maintenance intervals.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original SEWON-YUKEN standards, allowing straightforward retrofit into existing hydraulic systems without rework.
Typical Industrial Applications
The SEWON-YUKEN MRA-01-B-30 is a modular pressure control valve engineered for precise system pressure regulation and overload protection in industrial hydraulic circuits.
PRODUCT IMAGES
SEWON-YUKEN MRA-01-B-30 Modular 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 SEWON-YUKEN MRA-01-B-30 Pilot Operated Relief Valve. This Korea-made hydraulic component features a precise pressure control design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.