MFH-5-1/4 Valve Solenoid MFH Series, The MFH series of single solenoid valves are part of the Tiger Classic range and are ideal for use in pneumatic applications. The MFH series of single solenoid valves are part of the Tiger Classic range and are ideal for use in pneumatic applications. These highly durable valves are available with 5/2 way or 3/2 way function in a range of G thread pipe sizes, depending on the connection you require. They can be mounted on PAL manifold strips or on PRS manifold blocks.