Definition - What does Ball Valve mean?
A Ball Valve is a type of quarter turn valve that has a ball shaped disk used to control the fluid flow. There is a hole or bore in it that helps the valve to close or open. To open the valve, the hole should be in line with the body inlet while to close it should be rotated to 90-degrees with the help of a valve handle.
Petropedia explains Ball Valve
A Ball Valve is actually a ball that is placed in the passage where fluids flow. It has a bore through which the valve opens and closes. The fluids easily flow when the hole and the passage way are in the same direction. The valve is closed when the hole is perpendicular to the passage making a closure to the flow of fluids. The closing and opening of the valve is controlled from outside by turning the handle forth and back.
Generally, the balls are made up of combination of various metallic materials while the seats are made up of soft materials. The combination of metallic materials allows the ball valve to operate under all temperature conditions.
There are five different types of Ball Valves based on manufacturing and assembling the pieces of valve –
- Single body ball valve.
- Split body ball valve.
- Welded ball valve.
- Top entry ball valve.
- Three piece body ball valve.
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