Ball valves are a type of valve used to control the flow of fluids or gases. They consist of a hollow, perforated sphere or ball that rotates around its axis to control the flow of material through the valve. The ball has a hole or port in the center that allows material to flow through when the ball is aligned with the valve body. When the ball is rotated 90 degrees, the hole is perpendicular to the flow path and the flow is stopped.
Ball valves are commonly used in various applications, including industrial, commercial, and residential plumbing, and are known for their durability, reliability, and ease of use. They are available in a wide range of sizes, materials, and pressure ratings, making them suitable for a variety of applications.
There are several types of ball valves, including full port ball valves, reduced port ball valves, three-way ball valves, multi-port ball valves, V-port ball valves, trunnion-mounted ball valves, and fire-safe ball valves. The specific type of ball valve selected for a given application will depend on factors such as the type of material being transported, the pressure and temperature requirements, the size and configuration of the piping system, and any specific installation or maintenance requirements. Consulting with a qualified plumbing or valve specialist can help ensure that the appropriate valve is selected for the specific application.
Ball valves are classified based on several factors such as the type of ball, the construction of the body, and the number of ports. Here are the most common types of ball valves:
Full port ball valve: This type of ball valve has a bore diameter equal to the pipe's inner diameter, providing minimal flow restriction and reduced pressure drop.
Reduced port ball valve: This type of ball valve has a bore diameter smaller than the pipe's inner diameter, which restricts the flow and increases the pressure drop.
Floating ball valve: The ball in a floating ball valve is free to move in the valve body, and the ball is moved by the force of the fluid flow.
Trunnion-mounted ball valve: In a trunnion-mounted ball valve, the ball is fixed by a trunnion, which reduces the stress on the valve stem and provides a stable sealing.
Top entry ball valve: In a top entry ball valve, the valve body can be disassembled from the pipeline without removing the valve from the pipeline.
Three-way ball valve: A three-way ball valve has three ports, and it can be used to divert or mix the flow.
Four-way ball valve: A four-way ball valve has four ports, and it can be used to divert or mix the flow in two different directions.
V-port ball valve: The ball in a V-port ball valve has a V-shaped opening that provides a more precise flow control.
Cavity filler ball valve: In a cavity filler ball valve, a cavity is filled with a filler material to prevent the accumulation of fluid in the cavity.