Ball valves are widely used in industrial applications because they are very versatile, supporting pressures up to 1000 bar and temperatures up to 482 Â° F (250 Â° C). Typically, the size varies from 0.2 to 11.81 inches (0.5 cm to 30 cm). They are easy to repair and use.
A ball valve is a valve with a spherical disc, the part of the valve that controls the flow through it. The sphere has a hole, or port, through the center so that when the door is in line with both ends of the valve, will flow occur. When the valve is closed, the hole is perpendicular to the ends of the valve, and the flow is blocked. The handle or lever will be inline with the port position letting you "see" the valve's position. The ball valve, together with the butterfly and plug valve, is part of the family of quarter turn valves.
The body of the ball valves may be of metal, plastic or metal with a ceramic center. The ball is often chrome plated to make it more durable.