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A ferrule ball valve is a ball valve that has a ferrule. It is used to regulate water flow through a pipe. It allows for complete flow when fully open. Usually, it is a valve with a spherical disc, which is the control part. The sphere has a hole through the middle so that when the port is in line with both ends of the valve, flow will occur. When the valve is closed, the hole is perpendicular to the ends of the valve, so that flow is blocked. Ball valves should be durable. Because this kind of valve is usually work to get perfect shutoff even after years of idle. Therefore, an excellent choice for shutoff applications is the main strength of ball valves comparing with globe valves and gate valves. Ball valves are widely used in industry as they are very versatile, supporting pressures up to 700 bars and temperatures up to 200°C. Sizes generally range from 0.5 cm to 30 cm. Finally, they are convenient to repair and operate.
A ferrnle ball valve is generally used for fastening, joining, or reinforcement, and is often narrow circular rings of metal, or less commonly, plastic. Most ferrules consist of a circular clamp used to hold together and attach fibers, wires or posts, generally by crimping, swaging, or otherwise deforming the ferrule to permanently tighten it onto the parts that it holds.