LFR-3/8-D-MIDI-MPA Festo Filter Regulator

USD 197.60

Midi series filter regulator with G3/8 ports and 40 μm filtration. Features a 0.5–12 bar regulation range, analog pressure gauge, and manual drain.

SKU Festo-8002258 Category
Compressed air preparation

LFR-3/8-D-MIDI-MPA Festo Filter regulator

Model Identifier LFR-3/8-D-MIDI-MPA
Official Part Number 8002258
GTIN Standard 4052568423445

Technical Overview

The Festo LFR-3/8-D-MIDI-MPA is a professional-grade filter regulator from the D series, designed for effective compressed air preparation. It features a 40 µm filtration grade and a pressure regulation range of 0.5 to 12 bar. The unit includes an integrated analog pressure gauge, a rotary knob with detent for secure adjustment, and a manually rotating condensate drain. Constructed with a die-cast zinc housing and a polycarbonate bowl with a metal guard, it is engineered for vertical mounting and high-flow applications.

Key Features

  • Integrated analog pressure gauge for real-time monitoring
  • 40 µm filtration grade for effective particle removal
  • Rotary knob with detent for secure pressure locking
  • Metal bowl guard for enhanced durability in industrial environments
  • Manually rotating condensate drain
  • RoHS-compliant materials
  • Suitable for use with inert gases

Standard nominal flow rate of 3100 l/min for high-efficiency air preparation and distribution.

Technical Specification Matrix

ParameterValue
SizeMidi
SeriesD
Actuator lockRotary knob with detent
Mounting positionVertical +/-5°
Grade of filtration40 µm
Condensate drainManually rotating
DesignFilter regulator with pressure gauge
Max. condensate volume43 ml
Bowl guardMetal bowl guard
Symbol00991585
Pressure gauge (ANALOG) or Pressure display (DIGITAL)With pressure gauge
Operating pressure MPa0.1 MPa ... 1.6 MPa
Operating pressure bar1 bar ... 16 bar
Pressure regulation range0.5 bar ... 12 bar
Max. pressure hysteresis0.2 bar
Standard nominal flow rate (standardised to DIN 1343)3100 l/min
Operating mediumInert gases
Note on operating and pilot mediumLubricated operation possible (in which case lubricated operation will always be required)
Corrosion resistance class CRC2 - Moderate corrosion stress
LABS (PWIS) conformityVDMA24364-B1/B2-L
Storage temperature-10 °C ... 60 °C
Air purity class at outputCompressed air to ISO 8573-1:2010 [7:8:4] Inert gases
Media temperature-10 °C ... 60 °C
Ambient temperature-10 °C ... 60 °C
Product weight920 g
Type of mountingWith accessories
Pneumatic connection, port 1G3/8
Pneumatic connection, port 2G3/8
Note on materialsRoHS-compliant
Material housingDie-cast zinc
Material bowlPC

Industrial Applications

1. Pneumatic Clamping Control in CNC Machining Centers

Utilizing the Festo LFR-3/8-D-MIDI-MPA filter regulator to manage the primary compressed air supply for pneumatic workholding fixtures inside CNC machining environments.

Problem Solved

Inconsistent air pressure can lead to workpieces slipping during heavy milling operations, while unfiltered air causes premature wear of clamping valves. This unit provides a stable regulated pressure up to 12 bar with minimal 0.2 bar hysteresis, while its 40 µm filtration removes harmful particulates. The metal bowl guard protects the polycarbonate bowl from flying metal chips.

12 bar regulation range40 µm filtrationMetal bowl guard0.2 bar hysteresis3100 l/min flow rate

2. Inert Gas Purging System for Wave Soldering Machines

Deploying the filter regulator to control the flow and pressure of nitrogen gas supplied to an electronics manufacturing wave soldering machine, preventing solder oxidation.

Problem Solved

Unregulated inert gas flow wastes expensive nitrogen, while excessive pressure can disturb the solder wave. This regulator handles inert gases seamlessly, utilizing the precise 0.5 to 12 bar pressure regulation range and a high nominal flow rate of 3100 l/min through its G3/8 ports to maintain a consistent blanket of nitrogen.

Inert gasesG3/8 pneumatic connection0.5 bar ... 12 bar3100 l/minDie-cast zinc housing

3. End-of-Line Packaging Automation Air Preparation

Acting as the primary air preparation unit for pneumatic carton erectors and sealing actuators in high-speed packaging facilities.

Problem Solved

Fluctuations in factory air pressure cause erratic actuator movements leading to crushed packaging, and condensate damages pneumatic cylinders. The unit resolves this via its integrated manual condensate drain with 43 ml capacity and stable air delivery at 3100 l/min. Its CRC 2 rating ensures longevity against moderate industrial condensation and cleaning.

43 ml condensate volumeManually rotating drainCRC 2 moderate corrosion stress16 bar operating pressureVDMA24364-B1/B2-L LABS conformity

[Download-Datasheet]

Select your currency