LR-1-4-D-7-O-I-MINI Festo Pressure Regulator

USD 47.84

High-performance D series regulator with primary pressure compensation and secondary venting. Provides constant output pressure and is prepared for G1/8 gauges.

SKU Festo-192307 Category
Pressure regulator

LR-1/4-D-7-O-I-MINI Festo Pressure regulator

Model Identifier LR-1/4-D-7-O-I-MINI
Official Part Number 192307
GTIN Standard 4052568079369

Technical Overview

The LR-1/4-D-7-O-I-MINI is a classic Series D pressure regulator designed for high-performance compressed air preparation. This directly actuated diaphragm regulator features primary pressure compensation to maintain constant output pressure, integrated secondary venting, and a return flow function. Constructed with a die-cast zinc housing and sub-base with NBR seals, it ensures reliable operation across a pressure regulation range of 0.5 to 7 bar with a standard nominal flow rate of 1600 l/min. It is equipped with a rotary knob actuator lock with detent and is prepared for a G1/8 pressure gauge connection.

Key Features

  • Directly actuated diaphragm regulator design
  • Actuator lock with rotary knob and detent
  • Primary pressure compensation for constant output pressure
  • Integrated secondary venting
  • Built-in return flow function
  • Optional mounting position
  • RoHS-compliant materials
  • Prepared for G1/8 pressure gauge or display

Standard nominal flow rate of 1600 l/min for high-efficiency pneumatic performance.

Technical Specification Matrix

ParameterValue
SizeMini
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
Symbol00991559
Pressure gauge (ANALOG) or Pressure display (DIGITAL)Prepared for G1/8
Operating pressure (MPa)0.1 MPa ... 1.6 MPa
Operating pressure (bar)1 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)1600 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 weight300 g
Type of mountingWith accessories
Pneumatic connection, port 1G1/4
Pneumatic connection, port 2G1/4
Note on materialsRoHS-compliant
Material sub-baseDie-cast zinc
Material sealsNBR
Material housingDie-cast zinc

Industrial Applications

1. Automotive Paint Booth Pneumatic Supply

Utilizing the regulator to supply compressed air to pneumatic actuators and fluid delivery systems within an automotive paint shop.

Problem Solved

Standard pneumatic components often contain paint-wetting impairment substances (PWIS) like silicone, causing critical finish defects such as 'fish eyes'. This regulator's LABS conformity (VDMA24364-B1/B2-L) ensures a defect-free environment, while its maximum pressure hysteresis of 0.2 bar maintains extremely consistent pressure to prevent spray variations.

LABS (PWIS) conformityVDMA24364-B1/B2-LMax. pressure hysteresis 0.2 barPressure regulation range 0.5 bar ... 7 bar

2. Compact Packaging Machine Heat Sealer Actuation

Integrating the mini-sized diaphragm regulator into high-speed packaging machinery to control the secondary clamping pressure of pneumatic sealing jaws.

Problem Solved

In high-speed packaging machines, sudden pressure drops during fast cyclic operations lead to weak or inconsistent seals, and tight machine frames restrict the use of bulky components. The D-Mini series solves this by providing a high 1600 l/min standard nominal flow rate in a compact 300g footprint, ensuring rapid cylinder actuation with primary pressure compensation to keep output steady.

Size MiniStandard nominal flow rate 1600 l/minPrimary pressure compensationProduct weight 300 g

3. Inert Gas Purging Station for Metal Fabrication

Employing the regulator in a factory manifold system to precisely step down compressed inert gas lines for local workstation shielding and purging.

Problem Solved

Inert gas shielding requires steady delivery; over-pressurizing wastes expensive gas, while fluctuating pressure compromises weld or purge quality. The regulator safely handles up to 16 bar primary operating pressure and accurately drops it within a 0.5 to 7 bar range, utilizing its secondary venting and return flow function to automatically relieve downstream overpressure and protect sensitive workstation equipment.

Inert gasesSecondary ventingReturn flow functionOperating pressure 1 bar ... 16 barPneumatic connection G1/4

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