Festo MFH-5-1/2 Solenoid Valve (Part No. 6420)
Overview

The Festo MFH-5-1/2 is a high-performance 5/2-way monostable solenoid valve, part of the Tiger Classic series. It’s designed for dependable pneumatic control in automation systems, featuring fast response, robust construction, and flexible mounting.
Festo FTP
Festo

Technical Specifications
Specification Details
Valve Function 5/2-way, monostable
Actuation Type Electrical (solenoid coil ordered separately)
Festo FTP
Landefeld

Construction Width 52 mm
Festo FTP
Landefeld

Standard Nominal Flow Rate 3,700 L/min (DIN 1343)
Festo FTP
Tameson.com

Pneumatic Ports G 1/2 for ports 1–5
Festo FTP
Festo

Operating Pressure 0.2–0.8 MPa (2–8 bar)
Festo FTP
Landefeld

Reset Mechanism Mechanical spring return
Valve Design Poppet seat, soft sealing, pilot-actuated, non-reversible flow
Festo FTP
Landefeld

Manual Override Detenting (lockable) type
Mounting Options Manifold rail or through-holes; mounting position optional
Festo FTP
Landefeld

Switching Times ON: ~21 ms; OFF: ~150 ms
Festo FTP
Landefeld

Service Life (B10) ~5 million cycles
Festo

Degree of Protection IP 65 (with appropriate coil/socket)
Festo FTP
+1

Environmental Ratings Storage: –20 °C to 60 °C; Medium: –10 °C to 60 °C; Ambient: –5 °C to 40 °C
Festo FTP
Landefeld

Corrosion Resistance CRC 1 – Low corrosion stress (for indoor use)
Festo FTP
Landefeld

Material Compliance RoHS-compliant, PWIS-safe (VDMA24364-B1/B2-L)
Festo FTP
+1

Weight Approximately 1,135 g (some sources cite ~950 g)
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Festo FTP
Benefits & Applications

High Flow Capacity: With a nominal flow rate of 3,700 L/min, this valve is ideal for pneumatic systems requiring rapid air supply and changeover.

Long Service Life: Tested to endure approximately 5 million cycles, offering reliable operation for high-cycle applications.

Flexible Installation & Maintenance: Offers manifold or direct mounting, with a rotatable manual override for ease of access.

Rugged & Protected: The poppet design, spring return, and IP 65 protection ensure durability and minimal leakage in industrial settings.

Safe for Clean Environments: PWIS and RoHS compliance suit environments sensitive to contamination.

Wide Operating Conditions: Supports a range of temperatures and low-corrosion applications, especially indoor automation.

Compact Design: At just over 50 mm wide, it’s space-efficient yet powerful. MFH-5-1/2 FESTO