ms4-lfr

Name: ms4-lfr
Brand: FESTO
SKU: ms4-lfr

The Festo MS4-LFR filter regulator offers precise pressure control, high-quality filtration, and safety functions, making it an essential component for reliable compressed air supply in industrial settings.

Product Modelms4-lfr

Material Number526489

Product ID9508

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

1
Advanced Pressure ControlThe Festo MS4-LFR features a rotary knob with detent for precise pressure regulation, ensuring consistent output pressures in industrial applications.
2
High-Quality FiltrationWith filtration grades of 5 μm and 40 μm, the MS4-LFR provides clean and reliable compressed air, extending the lifespan of pneumatic systems and reducing maintenance needs.
3
Safety FunctionsEquipped with safety features like soft start valves and shut-off valves, the MS4-LFR ensures safe operation and protects against potential hazards in the workplace.
4
Versatile Mounting OptionsThe regulator can be wall-mounted with a maximum permissible wall thickness of 2.5 mm, providing flexibility in installation and space optimization.

Technical Specifications

Detailed engineering parameters based on manufacturer documentation

Specifications may be subject to change without notice

Parameter

Value

Parameter

Value

Size

Series

Actuator lock

Rotary knob with detent Rotary knob with integrated lock can be closed with accessories

Mounting position

Vertical +/- 5°

Grade of filtration

5μm 40μm

Condensate drain

Fully automatic Manual, non-detenting Manually rotating Semi-automatic

Durable ConstructionBuilt to withstand various environmental conditions, the MS4-LFR is resistant to vibration and shock, ensuring reliable performance even in demanding industrial environments.

Structural design

Filter regulator with pressure gauge Filter regulator without pressure gauge

Controller function

Outlet pressure constant With secondary exhausting With return flow function

Bowl guard

Plastic bowl guard Integrated as metal bowl guard

Degree of condensate separation

75%

Pressure gauge

G1/4 prepared G1/8 prepared with pressure sensor with pressure gauge

Operating pressure

0.8bar 14bar

Pressure regulation range

0.3bar 12bar

Max. pressure hysteresis

0.25bar

Standard nominal flow rate

850l/min 1800l/min

Certification

c UL us - Recognized (OL)

CE marking (see declaration of conformity)

as per EU explosion protection directive (ATEX)

UKCA marking (see declaration of conformity)

acc. to UK EX instructions

Explosion protection certification outside the EU

EPL Db (GB) EPL Gb (GB)

Explosion prevention and protection

Zone 1 (ATEX) Zone 1 (UKEX) Zone 2 (ATEX) Zone 21 (ATEX) Zone 21 (UKEX) Zone 22 (ATEX)

ATEX category gas

II 2G

ATEX category for dust

II 2D

Type of ignition protection for gas

Ex h IIC T6 Gb X

Type of (ignition) protection for dust

Ex h IIIC T60°C Db X

Explosive ambient temperature

-10°C <= Ta <= +60°C

Operating medium

Compressed air as per ISO 8573-1:2010 [-:4:-] Compressed air as per ISO 8573-1:2010 [7:4:-] Inert gas

Corrosion resistance class (CRC)

2 - Moderate corrosion stress

LABS (PWIS) conformity

VDMA24364-B1/B2-L

Storage temperature

-10°C 60°C

For use in the food industry

See supplementary material information

Temperature of medium

-10°C 60°C

Ambient temperature

-10°C 60°C

Type of mounting

Optionally: Front panel mounting Line installation With accessories

Note on materials

RoHS-compliant

Material of sub-base

Die-cast aluminum

Seals material

NBR

Compressed air filter material

Housing material

Die-cast aluminum

Diaphragm material

NBR

Separating disc material

POM

Manufacturer ID

526489