Product Overview
The ATOS AGIRK-10/100/V 51 is a direct-operated proportional pressure relief valve designed for precise, electro-proportional control of system pressure in industrial hydraulic circuits. Manufactured by Atos (a globally recognized brand in proportional and servo hydraulics), this valve belongs to the AGIRK series, which combines a poppet-type pressure relief cartridge with a proportional solenoid actuator. The valve modulates pressure continuously in proportion to the electrical reference signal supplied to the solenoid, enabling stepless pressure setting, ramp-controlled pressure transitions, and remote or PLC-based pressure regulation. With a nominal size of 10 (NG10 / CETOP 5 interface) and a pressure adjustment range up to 100 bar, the AGIRK-10/100/V 51 is engineered for systems requiring accurate, repeatable pressure limiting and unloading functions rather than simple on/off relief. The “V” designation indicates the solenoid/coil variant configuration, and the “51” identifies the specific series/design revision of the valve. As a proportional pressure control component, it is typically used in place of multiple fixed-setting relief valves, allowing a single valve to serve multiple pressure levels within one machine cycle.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Proportional Pressure Relief Valve (Hydraulic Valve) |
| Model Designation | AGIRK-10/100/V 51 |
| Nominal Size | NG10 (CETOP 5 / ISO 4401-05 interface) |
| Pressure Adjustment Range | Up to 100 bar (proportional, stepless setting) |
| Actuation Type | Proportional solenoid with analog reference signal input |
| Operating Pressure | Standard Industrial Grade (up to rated 100 bar control range) |
| Mounting & Connection | Subplate mounting, ISO 4401 / CETOP 5 standard interface |
| Hydraulic Fluid | Mineral oil based hydraulic fluids (standard industrial viscosity range) |
Engineering Features & Advantages
- Precision Proportional Control: The proportional solenoid and poppet-type relief cartridge deliver smooth, stepless pressure modulation proportional to the input current, eliminating the need for multiple fixed-pressure relief valves and enabling programmable pressure profiles.
- Fast Dynamic Response: Optimized spool/poppet geometry and low-inertia solenoid armature provide rapid pressure rise and release, supporting ramp and unloading functions in fast machine cycles.
- Stable Pressure Regulation: Low hysteresis and good repeatability ensure consistent pressure holding and limiting behavior, critical for clamping, pressing, and load-holding circuits.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with hardened internal components and robust solenoid construction resistant to vibration and thermal cycling.
- Direct Fit Replacement: Precision-manufactured to original ATOS specifications for direct replacement, minimising downtime and eliminating fitment issues.
Typical Industrial Applications
As a proportional pressure control component, it is typically used in place of multiple fixed-setting relief valves, allowing a single valve to serve multiple pressure levels within one machine cycle.
PRODUCT IMAGES

ATOS AGIRK-10/100/V 51 Proportional 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 ATOS AGIRK-10/100/V 51 Proportional Pressure Relief Valve. This Italy-made 100 bar hydraulic component features a piloted relief design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.