A single 180 degree solenoid valve is an electrically-controlled valve that uses a solenoid to open and close a valve. The valve is rated for 230V and has 3/8" BSP (British Standard Pipe) male threads, which are a type of thread commonly used in the United Kingdom and other countries. The valve is used to control the flow of fluids such as water, air, and oil. It is typically used in industrial and commercial applications, such as irrigation systems, HVAC systems, and fluid power systems.