ms4-lrb

Name: ms4-lrb
Brand: FESTO
SKU: ms4-lrb

The Festo MS4-LRB 1/4" pressure regulator is a high-performance device designed for precise air pressure control. It features low hysteresis, primary pressure compensation, and a return flow function, making it suitable for a wide range of industrial applications.

Product Modelms4-lrb

Material Number527692

Product ID9582

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

1
Precise Pressure ControlThe Festo MS4-LRB 1/4" pressure regulator maintains a constant output pressure, ensuring reliable operation despite primary pressure variations. Its low hysteresis ensures minimal pressure fluctuations, making it ideal for applications requiring precise control.
2
High Flow RatesWith a standard nominal flow rate of 1700 l/min, the MS4-LRB can handle significant air consumption, making it suitable for demanding industrial processes.
3
Versatile Mounting OptionsThe regulator can be mounted directly or in-line, providing flexibility in installation. It also supports various accessories for customized setups.
4
Corrosion ResistanceConstructed with die-cast aluminum and featuring nitrile rubber diaphragms, the MS4-LRB offers moderate corrosion resistance, ensuring durability in harsh industrial environments.

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

Any

Structural design

Pressure regulator with pressure gauge

Controller function

Outlet pressure constant With secondary exhausting With return flow function

Operational FlexibilityThe regulator operates with compressed air to ISO 8573-1:2010 standards and can handle both lubricated and unlubricated air, providing flexibility in different operating conditions. It also supports optional pressure sensors and digital displays for enhanced monitoring capabilities.

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

300l/min 2200l/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 [7:4:4] Inert gas

Information on operating and pilot media

Operation with oil lubrication possible (required for further use)

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

Product weight

222g

Type of mounting

Optionally: Front panel mounting Line installation With accessories

Note on materials

RoHS-compliant

Material of sub-base

Die-cast aluminum

Material of operator panel

PA POM

Seals material

NBR

Housing material

Die-cast aluminum

Diaphragm material

NBR

Manufacturer ID

527692