ms4n-lfr

Product ID:9083
Updated: 2026/7/4
Festo ms4n-lfr

Key Features

  • 1Deliver high flow rates and precise control with low hysteresis.
  • 2Enable flexible modular, in-line, or panel mounting options.
  • 3Secure operation with a lockable rotary knob and reverse flow.
  • 4Customize setup with two gauge connections and venting options.
  • 5Monitor pressure in real-time with an optional sensor display.

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Technical Specifications

Detailed engineering parameters

ParameterValueParameterValue
Size
4
Series
MS
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
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)
Explosion prevention and protection
Zone 1 (ATEX) Zone 2 (ATEX) Zone 21 (ATEX) 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
PE
Housing material
Die-cast aluminum
Diaphragm material
NBR
Separating disc material
POM
Manufacturer ID
527694

Specifications may be subject to change without notice

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