Product Overview
The FESTO MPPE-3-1/4-6-420-B is a precision pneumatic proportional pressure regulator engineered for continuous, electronically controlled pressure regulation in compressed air systems. As a member of Festo’s MPPE series, this valve converts an analog electrical setpoint signal (0–10 V or 4–20 mA) into a proportional pneumatic output pressure, enabling stepless, closed-loop pressure control directly within the pneumatic circuit. The unit features a 1/4″ port connection, a 6 bar nominal pressure range, and a 420 l/min nominal flow rating, making it ideally suited for dynamic pressure profiling, force-controlled actuation, and soft-start/soft-stop functions in automated industrial machinery. Its integrated closed-loop control electronics compare the actual output pressure—sensed internally—against the commanded setpoint, delivering high repeatability and minimal hysteresis without the need for external feedback devices.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Pneumatic Proportional Pressure Regulator (Process & Pneumatic Valve) |
| Model Designation | MPPE-3-1/4-6-420-B |
| Manufacturer | Festo |
| Pneumatic Connection | G1/4 (1/4″ threaded port) |
| Pressure Regulation Range | 0 – 6 bar (nominal output range) |
| Nominal Flow Rate | 420 l/min |
| Control Signal | Analog setpoint (0–10 V / 4–20 mA, model dependent) |
| Control Principle | Integrated closed-loop proportional control with internal pressure feedback |
| Operating Pressure | Standard Industrial Grade (up to rated bar, secondary exhaust) |
| Mounting & Connection | Standard ISO / Manufacturer Interface, inline or manifold mounting |
| Media | Filtered, dried compressed air (lubricated or non-lubricated) |
Engineering Features & Advantages
- Precision Proportional Performance: The MPPE-3 delivers stepless, infinitely variable pressure regulation proportional to the analog input signal, with high repeatability and low hysteresis for demanding closed-loop pneumatic control tasks.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with robust construction and wear-resistant internal components for extended service life.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original FESTO OEM standards, ensuring drop-in replacement without modification to existing manifolds or piping.
Typical Industrial Applications
The unit features a 1/4″ port connection, a 6 bar nominal pressure range, and a 420 l/min nominal flow rating, making it ideally suited for dynamic pressure profiling, force-controlled actuation, and soft-start/soft-stop functions in automated industrial machinery.
PRODUCT IMAGES



FESTO MPPE-3-1/4-6-420-B Pneumatic Proportional Pressure Regulator
⚡ 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 FESTO MPPE-3-1/4-6-420-B Proportional Pressure Regulator Valve. This Germany-made 24V DC hydraulic component features a closed-loop pressure control design, delivering precise, leak-free regulation for heavy-duty industrial automation systems.