Product Overview
The FESTO HE-D-MIDI / LFR-D-MIDI Pneumatic Service Unit Combination is a modular air preparation assembly engineered by Festo for reliable conditioning of compressed air in industrial pneumatic systems. The combination pairs an HE-D-MIDI on/off valve (manual shut-off valve) with an LFR-D-MIDI service unit manifold, which integrates filter regulation, pressure regulation, and lubrication functions within a single MIDI-size (D-series) platform. The unit conditions compressed air by removing condensate and particulate contamination, regulating downstream working pressure, and introducing controlled lubrication where required, thereby protecting pneumatic valves, cylinders, and actuators from wear and pressure fluctuation. Its modular design allows individual components to be configured, exchanged, or expanded without altering the base mounting, making it a standard building block for machine-level air preparation in automated production environments.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Pneumatic Service Unit Combination (Process & Pneumatic Valve Assembly) |
| Model Designation | HE-D-MIDI / LFR-D-MIDI |
| Manufacturer | Festo |
| Size / Series | MIDI (D-series modular platform) |
| Operating Medium | Compressed air, filtered and dried (lubricated or non-lubricated) |
| Operating Pressure | Standard industrial pneumatic grade (up to rated bar per MIDI series) |
| Mounting & Connection | Modular MIDI interface with threaded port connections |
| Function | Shut-off, filtration, pressure regulation, and lubrication |
Engineering Features & Advantages
- Precision Performance: The LFR-D-MIDI regulator maintains stable downstream pressure with minimal hysteresis, while the integrated filter element captures condensate and particulate contamination to protect sensitive pneumatic components.
- Modular Versatility: The MIDI D-series platform allows the HE-D-MIDI shut-off valve and LFR-D-MIDI service unit to be combined, extended, or reconfigured with additional modules without changing the mounting footprint.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with robust housings and sealing systems suited to demanding compressed-air circuits.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original Festo OEM standards, ensuring drop-in replacement and simplified maintenance.
Typical Industrial Applications
This Festo MIDI service unit combination is typically deployed at the machine entry point of compressed-air systems in plastic injection molding machines, metallurgical and forming presses, packaging and assembly automation lines, CNC machine tools, and general factory automation where consistent air quality and regulated pressure are essential for reliable pneumatic valve and actuator operation.
PRODUCT IMAGES


FESTO HE-D-MIDI / LFR-D-MIDI Pneumatic Service Unit Combination
âš¡ 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 HE-D-MIDI / LFR-D-MIDI Service Unit Combination. This Germany-made pneumatic component features a manual on/off valve and filter regulator, delivering leak-free, reliable fluid control for heavy-duty industrial systems.