FESTO Solenoid Valve MFH-5-1/4 (Part No. 6211) The FESTO MFH-5-1/4 is a 5/2-way, single solenoid (monostable), pilot-operated pneumatic solenoid valve designed for reliable directional control in industrial automation systems. It features a G1/4 port size, 1,000 L/min nominal flow rate, 2.2–8 bar operating pressure, and spring return mechanism. The valve is supplied without the solenoid coil, which must be ordered separately.