Efficient pneumatic control with high flow rates and minimal pressure drop. Lockable rotary knob for precise control and protection of set values.
Product Modelms4-lr-1/4-d7-wr
Material Number8190243
Product ID674
Stock on Request
Last updated: 8/29/2026
Key Features
1
High Flow RateThe Festo MS4-LR 1/4 D7 WR pressure regulator delivers a high flow rate of up to 1700 l/min, making it suitable for demanding applications.
2
Minimal Pressure DropDesigned to maintain optimal performance, this regulator ensures minimal pressure drop, ensuring consistent air supply to your system.
3
Lockable Rotary KnobThe rotary knob with detent provides precise control, and it can be locked using accessories to protect the set values from accidental adjustments.
4
Wide Operating RangeThis pressure regulator operates within a wide range of 0.5 to 12 bar, making it versatile for various pneumatic control applications.
5
Technical Specifications
Detailed engineering parameters based on manufacturer documentation
Specifications may be subject to change without notice
Parameter
Value
Parameter
Value
Size
4
Series
MS
Actuator lock
Rotary knob with detent
Mounting position
Any
Structural design
Directly controlled diaphragm regulator
Controller function
Outlet pressure constant With secondary exhausting With return flow function
Robust DesignBuilt with a robust design and suitable for temperatures ranging from -10°C to 60°C, this regulator ensures reliable performance in diverse environments.
Symbol
00991558
Pressure gauge
with pressure gauge
Operating pressure
0.8bar 14bar
Pressure regulation range
0.5bar 12bar
Max. pressure hysteresis
3.625psi
Standard nominal flow rate
1700l/min
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
225g
Type of mounting
Optionally: Front panel mounting Line installation With accessories
Pneumatic connection 1
G1/4
Pneumatic connection 2
G1/4
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
8190243
Festo MS4-LR 1/4 D7 WR Pressure Regulator - High Flow Rate and Minimal Pressure Drop | INDSLT
