Product Overview
The ATC X-PPV20085021 is a precision-engineered proportional pressure relief valve designed for advanced hydraulic system pressure regulation and control. Manufactured by ATC, this valve utilizes a proportional solenoid actuator to provide infinitely variable pressure adjustment in direct response to an electrical command signal. Unlike conventional fixed-setting relief valves, the X-PPV20085021 enables dynamic, real-time pressure modulation, making it an essential component in closed-loop hydraulic systems requiring precise force control, load sensing, or pressure profiling. Its robust spool-and-sleeve design ensures minimal hysteresis, excellent repeatability, and stable operation across the full rated pressure range, positioning it as a critical control element in high-performance industrial hydraulic circuits.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Proportional Pressure Relief Valve |
| Model Designation | X-PPV20085021 |
| Operating Pressure | Standard Industrial Grade (Up to 350 bar rated) |
| Mounting & Connection | Standard ISO 4401 / CETOP Interface |
| Actuation Type | Proportional Solenoid with Integrated Position Feedback |
| Command Signal | Analog 0–10 VDC / 4–20 mA (Configurable) |
| Hysteresis | ≤ 3% of Rated Pressure |
| Response Time | ≤ 30 ms (Typical Step Response) |
| Fluid Compatibility | Mineral Oil, HLP/HM Series per ISO 6743-4 |
| Seal Material | NBR / FKM (High-Temperature Option) |
Engineering Features & Advantages
- Precision Proportional Control: The proportional solenoid and optimized spool geometry deliver infinitely variable pressure setting with minimal hysteresis and excellent linearity, enabling accurate closed-loop pressure regulation in demanding servo-hydraulic systems.
- Fast Dynamic Response: A low-inertia armature and high-response solenoid design achieve typical step response times of ≤ 30 ms, ensuring rapid adaptation to changing load conditions and command signals.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with hardened spool and sleeve components, robust coil insulation (Class H), and protection against contamination-induced sticking.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM standards, including ISO 4401 mounting patterns and standardized electrical connectors, ensuring drop-in installation without modification.
- Direct Fit Replacement: Precision-manufactured to original ATC specifications for direct replacement, minimising downtime and eliminating fitment issues.
Typical Industrial Applications
Its robust spool-and-sleeve design ensures minimal hysteresis, excellent repeatability, and stable operation across the full rated pressure range, positioning it as a critical control element in high-performance industrial hydraulic circuits.
PRODUCT IMAGES

ATC X-PPV20085021 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 ATC X-PPV20085021 Proportional Pressure Relief Valve. This German-made 24V DC hydraulic component features a precise proportional solenoid, delivering leak-free, reliable fluid control for heavy-duty industrial systems.