SMC Corporation SY3101-5U1 Three-Way Solenoid Valve

The SMC SY3101-5U1 is a 5-port, 2-position, single-solenoid pneumatic valve in the SY3000 family, designed to precisely direct compressed air in automated equipment. It is a 5/2 monostable valve with a metal seal and high-pressure capability, driven by a 24 V DC coil to actuate a single solenoid and switch between the two flow paths. The valve features NPT-threaded ports for compatibility with common pneumatic fittings and is intended for general-purpose directional control in cylinders, actuators, and automated lines. Common configurations include base mounting with compact body designs; suffixes such as -NA and -B indicate variations in mounting or port options, so verify the exact model when selecting components. Used across manufacturing, packaging, and automation applications, the SY3101-5U1 enables reliable on/off control of compressed-air circuits, enabling precise actuation of pneumatic cylinders and tools in industrial systems.