Product Model
mfh-3-1/8-ex
Selling Points
- 1The Festo MFH-3-1/8-EX is a high-performance, electrically actuated 3/2-way directional control valve designed for precise pneumatic control. It features a standard nominal flow rate of 500 l/min and operates with a pneumatic working port of G1/8.
- 2This solenoid valve is constructed with a die-cast aluminum housing and features an anodized finish for enhanced durability and corrosion resistance. It also includes soft seals made from NBR and PU materials.
- 3The MFH-3-1/8-EX offers mechanical spring reset and is available with a manual override option. It also features a detenting mechanism for secure operation and includes a pilot exhaust port for efficient exhaust air management.
- 4The valve operates within a wide temperature range of -5 °C to 40 °C and supports lubricated operation, ensuring optimal performance in various industrial environments. It is certified for explosion protection in various zones and divisions, including Class I, Div. 1 (US) and Class II, Div. 2 (US).
- 5With a switching time of 29 ms off and 11 ms on, the MFH-3-1/8-EX provides fast and reliable switching performance. It is powered by a 120 V AC solenoid coil and is designed to meet the stringent standards of DIN 1343 for pneumatic flow rates.
Technical Specifications
Detailed engineering parameters based on manufacturer documentation
| Parameter | Value | Parameter | Value |
|---|---|---|---|
Valve function | 3/2, closed, monostable | Actuation type | Electrical |
Width | 26mm | Standard nominal flow rate | 500l/min |
Pneumatic working port | G1/8 | Operating voltage | Via solenoid coil, to be ordered separately |
Operating pressure | 1.5bar 8bar | 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 | 5mm | Width dimension | 27mm |
Exhaust air function | With flow control option | Sealing principle | Soft |
Mounting position | Any | Manual override | Detenting |
Type of control | Pilot-controlled | Flow direction | Non-reversible |
Symbol | 00991041 | Lap | Underlap |
Switching time off | 29ms | On switching time | 9ms |
Max. positive test pulse with 0 signal | 2200μs | Max. negative test pulse on 1 signal | 3700μs |
Coil characteristics | See solenoid coil, to be ordered separately | 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 | -20°C 60°C | Temperature of medium | -5°C 40°C |
Ambient temperature | -5°C 40°C | Product weight | 240g |
Electrical connection | Via F coil, to be ordered separately | Type of mounting | Optionally: On terminal strip With through-hole |
Venting hole connection | M5 | Pilot exhaust air port 82 | M5 |
Pneumatic connection 1 | G1/8 | Pneumatic connection 2 | G1/8 |
Pneumatic connection 3 | G1/8 | Note on materials | RoHS-compliant |
Seals material | NBR | Housing material | Die-cast aluminum |
Manufacturer ID | 535897 |
Specifications may be subject to change without notice