LR-1-2-D-7-I-MIDI Festo Pressure Regulator

USD 101.66

Midi size diaphragm pressure regulator with $G1/2$ ports. Features a 0.5–7 bar regulation range , 4000 l/min flow rate , and integrated secondary venting.

SKU Festo-192315 Category
Compressed air preparation

LR-1/2-D-7-I-MIDI Festo Pressure regulator

Model Identifier LR-1/2-D-7-I-MIDI
Official Part Number 192315
GTIN Standard 4052568150907

Technical Overview

The Festo LR-1/2-D-7-I-MIDI is a high-performance Midi size pressure regulator from the D-series, designed for precise compressed air and inert gas regulation. This directly actuated diaphragm regulator features primary pressure compensation to ensure a constant output pressure despite inlet variations, integrated secondary venting, and a return flow function. Constructed with robust die-cast zinc housing and sub-bases, it supports a standard nominal flow rate of 4000 l/min and a regulation range between 0.5 and 7 bar.

Key Features

  • Directly actuated diaphragm regulator design
  • Output pressure constant via primary pressure compensation
  • Integrated secondary venting and return flow function
  • Rotary knob with detent for actuator locking
  • Optional mounting position for installation flexibility
  • Built-in analog pressure gauge
  • RoHS-compliant materials
  • Suitable for lubricated operation (required if initiated)

High standard nominal flow rate of 4000 l/min with primary pressure compensation for constant output stability.

Technical Specification Matrix

ParameterValue
SizeMidi
SeriesD
Actuator lockRotary knob with detent
Mounting positionoptional
DesignDirectly actuated diaphragm regulator
Controller functionOutput pressure constant Via primary pressure compensation With secondary venting With return flow function
Symbol00991558
Pressure gauge (ANALOG) or Pressure display (DIGITAL)With pressure gauge
Operating pressure (MPa)0 MPa ... 1.6 MPa
Operating pressure (bar)0 bar ... 16 bar
Pressure regulation range0.5 bar ... 7 bar
Max. pressure hysteresis (MPa)0.02 MPa
Max. pressure hysteresis (bar)0.2 bar
Max. pressure hysteresis (psi)2.9 psi
Standard nominal flow rate (standardised to DIN 1343)4000 l/min
Operating mediumCompressed air to ISO 8573-1:2010 [7:4:4] Inert gases
Note on operating and pilot mediumLubricated operation possible (in which case lubricated operation will always be required)
LABS (PWIS) conformityVDMA24364-B1/B2-L
Air purity class at outputCompressed air to ISO 8573-1:2010 [7:4:4] Inert gases
Media temperature-10 °C ... 60 °C
Ambient temperature-10 °C ... 60 °C
Product weight720 g
Type of mountingWith accessories
Pneumatic connection, port 1G1/2
Pneumatic connection, port 2G1/2
Note on materialsRoHS-compliant
Material sub-baseDie-cast zinc
Material sealsNBR
Material housingDie-cast zinc

Industrial Applications

1. Pneumatic Cylinder Control in High-Speed Packaging Lines

Utilizing the Festo LR-1/2-D-7-I-MIDI pressure regulator to regulate compressed air for heavy-duty pneumatic actuators in automated packaging machinery. The regulator effortlessly handles simultaneous actuation across the line thanks to its high flow capacity, providing stable downstream pressure even if the main plant compressor supply fluctuates.

Problem Solved

Eliminates inconsistent cylinder actuation force and speeds caused by upstream pressure drops, preventing defective packaging seals or misaligned cuts during high-speed production cycles.

4000 l/min standard nominal flow ratePrimary pressure compensationPressure regulation range 0.5 bar ... 7 barDirectly actuated diaphragm regulator

2. Atomization Air Supply for Industrial Paint Spraying Systems

Deploying the regulator to control the air supply for automated spray nozzles in automotive or heavy-machinery coating booths. The unit's secondary venting and tight hysteresis ensure the atomization pressure remains strictly constant, while its die-cast zinc housing and NBR seals provide durability in challenging industrial environments.

Problem Solved

Prevents uneven paint coating thickness, overspray, or sputtering issues caused by pressure surges or minor hysteresis in the air supply during intermittent automated spraying operations.

Max. pressure hysteresis 0.2 barOutput pressure constantWith secondary ventingDie-cast zinc housingMaterial seals NBR

3. Robotic Pick-and-Place End Effector Force Regulation

Serving as the primary pneumatic control module for robotic assembly stations. The regulator uses its standard G1/2 pneumatic ports to integrate easily into the factory air network, while its lockable adjustment mechanism guarantees the pressure settings for pneumatic grippers remain untampered and precise.

Problem Solved

Solves the critical issue of varying gripping strengths in robotic end effectors, preventing the accidental crushing of delicate components or the dropping of heavy parts due to accidental pressure shifts.

G1/2 pneumatic connectionRotary knob with detentWith return flow functionOperating pressure 0 bar ... 16 bar

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