The EAV4000-F04-5YO-Q part of SMC is an Electro-Pneumatic solenoid valve. It is designed for use in air handling systems, liquid flow systems, and other process control applications. It has a size 4 port connection, 5/2-way controlled type, with Normally Closed operation. This type of valve is manufactured with a corrosion-resistant body, and is equipped with a variety of mounting options for ease of installation. The EAV4000-F04-5YO-Q part is also equipped with a quick-connect electrical connector for easy installation and replacement.