Festo MFH-5/3G-1/8-S-B 30993 5/3 Closed Solenoid Valve G1/8

Festo MFH-5/3G-1/8-S-B is a 5/3‑way, closed center (NC), monostable (single solenoid) pneumatic directional control valve from the Tiger 2000 series. Its 26 mm width and standard nominal flow rate of 1000 l/min make it suitable for applications requiring a balanced, safe mid‑position. The piston gate valve is piloted and exhibits positive overlap seals. Upon power‑off, mechanical springs return the valve to the closed center position, blocking all five G1/8 ports. A non‑detenting manual override facilitates commissioning. The die‑cast aluminium housing carries an IP65 rating, enabling use in industrial environments. It requires a separate F‑type coil (type F, 8 mm core) and a corresponding plug socket.
Applications:

• Mid‑position locking of pneumatic actuators (closed center)

• Control of double‑acting cylinders with stop function

• Factory and packaging automation

• Material handling and assembly systems
  Core Specifications:

• Valve function: 5/3‑way, closed center (NC), monostable (single solenoid, mechanical spring return)

• Actuation type: Electrical (via F‑type coil, ordered separately)

• Standard nominal flow rate: 1000 l/min (DIN 1343)

• Design: Piston gate valve with positive overlap

• Pneumatic working ports: G1/8 (female, all five ports)

• Operating pressure range: –0.9 … 10 bar (supports vacuum operation)

• Pilot air supply: External connections (ports 12 & 14, G1/8), pilot exhaust ports M5

• Flow direction: Reversible

• Manual override: Non‑detenting (push‑type)

• Degree of protection: IP65 (when mated with appropriate socket and correctly installed)

• Mounting type: Through‑hole or on PR rail

• Ambient temperature: –5 °C … +40 °C

• Product weight: approx. 400 g

• Housing material: Die‑cast aluminium, NBR seals
  Advanced Specifications:

• Nominal size: 8 mm

• Switching times: on 20 ms, off 23 ms

• Max. switching frequency: 3 Hz

• Max. positive test pulse (0 signal): 2200 µs

• Max. negative test pulse (1 signal): 3700 µs

• Corrosion resistance class (CRC): 1 – low corrosion stress

• LABS (PWIS) conformity: VDMA24364‑B1/B2‑L

• Operating medium: Compressed air to ISO 8573‑1:2010 [7:4:4]; oil‑lubricated possible (continued lubrication required if applied)
  System Integration:

• The valve belongs to the Festo Tiger 2000 series of directional control valves.

• The external pilot air supply must be connected; the pilot pressure must be at least 3 bar to guarantee reliable switching.

• For electrical connection, a Festo F‑type solenoid coil (type F, 8 mm core) and a 3‑pin plug socket (industrial pattern to EN 175301‑803) are required and must be ordered separately.

• The valve can be mounted individually on a PR rail or directly via through‑holes.
  Standards & Compliance:
  Refer to manufacturer official documentation for detailed certification and compliance information.
  Related Products:

• MFH‑5/3G‑1/4‑S‑B – G1/4 version, higher flow rate

• MFH‑5/3E‑1/8‑B – 5/3 exhaust center version for different safety needs

• MSFG‑24/42‑50/60 – F‑type solenoid coil, 24 V DC / 42 V AC, 50/60 Hz, 4.5 W (IP65, DIN EN 175301‑803)

• MSSD‑F – 3‑pin angled plug socket (IP65, industrial form B)