A 3 inch globe valve is a type of valve used in a variety of industrial and commercial applications. It is designed to control the flow of liquids and gases through a pipe or system. The valve consists of a body, a disc, and a stem. The body is the main part of the valve and is typically made of metal or plastic. The disc is the part that moves and controls the flow of the liquid or gas. The stem is the part that is connected to the disc and is used to open and close the valve. The size of the valve is determined by the diameter of the pipe it is connected to, and a 3 inch globe valve is typically used for pipes with a 3 inch diameter. The valve is designed to be durable and reliable, and is often used in high-pressure applications. It is also designed to be easy to install and maintain, making it a popular choice for many industrial and commercial applications.