FestoClassic
In Stock

mfh-5-1/4-s-b-ex

Product ID:9935
Updated: 2026/4/3
Festo mfh-5-1/4-s-b-ex

Key Features

  • 1Feature a die-cast aluminum housing with durable NBR/TPE-U seals. 2、Deliver precise control via reliable electrical actuation for minimal maintenance. 3、Provide flexible flow control with a 1,300 l/min standard nominal rate. 4、Ensure safe operation in hazardous areas with IP65 and ATEX/EPL certifications. 5、Simplify system integration using a compact 32mm width and G1/4 ports.
Product Details
mfh-5-1/4-s-b-ex
Festo

Technical Specifications

Detailed engineering parameters

ParameterValueParameterValue
Valve function
5/2, monostable
Actuation type
Electrical
Width
32mm
Standard nominal flow rate
1300l/min
Pneumatic working port
G1/4
Operating pressure
0bar 10bar
Structural design
Plate seat
Reset method
Mechanical spring
CE marking (see declaration of conformity)
as per EU explosion protection directive (ATEX)
Explosion protection certification outside the EU
EPL Db (GB) EPL Gb (GB)
UKCA marking (see declaration of conformity)
acc. to UK EX instructions
ATEX category gas
II 2G
ATEX category for dust
II 2D
Type of ignition protection for gas
Ex h IIC T4 Gb
Type of (ignition) protection for dust
Ex h IIIC T130°C Db
Explosive ambient temperature
-5°C <= Ta <= +40°C
Degree of protection
IP65
Nominal width
7mm
Width dimension
33mm
Exhaust air function
With flow control option
Sealing principle
Soft
Mounting position
Any
Manual override
Non-detenting
Type of control
Pilot-controlled
Pilot air supply port
External
Flow direction
Non-reversible
Symbol
00991024
Lap
Underlap
Pilot pressure MPa
0.15MPa 0.8MPa
Pilot pressure
1.5bar 8bar
b-value
0.29
C value
5.5l/sbar
Max. switching frequency
3Hz
Switching time off
36ms
On switching time
12ms
Max. positive test pulse with 0 signal
2200μs
Max. negative test pulse on 1 signal
3700μs
Explosion prevention and protection
Zone 1 (ATEX) Zone 1 (UKEX) Zone 2 (ATEX) Zone 21 (ATEX) Zone 21 (UKEX) Zone 22 (ATEX)
Operating medium
Compressed air as per ISO 8573-1:2010 [7:4:4]
Information on operating and pilot media
Operation with oil lubrication possible (required for further use)
Corrosion resistance class (CRC)
1 - Low corrosion stress
LABS (PWIS) conformity
VDMA24364-B1/B2-L
Storage temperature
-40°C 60°C
Temperature of medium
-10°C 60°C
Pilot medium
Compressed air as per ISO 8573-1:2010 [7:4:4]
Ambient temperature
-5°C 40°C
Product weight
300g
Electrical connection
Via F coil, to be ordered separately
Type of mounting
With through-hole
Pilot exhaust air port 84
M5
Pilot air port 14
G1/8
Pneumatic connection 1
G1/4
Pneumatic connection 2
G?
Pneumatic connection 3
G1/4
Pneumatic connection 4
G1/4
Pneumatic connection 5
G1/4
Note on materials
RoHS-compliant
Seals material
NBR TPE-U(PU)
Housing material
Die-cast aluminum
Manufacturer ID
535925

Specifications may be subject to change without notice