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    Ball Valve Types and Parts

    Uploaded by

    Abdul Mohid Sheikh
    The ball valve is a rotational valve that uses a hollow ball to open and close the flow of fluid. It has good on/off and some throttling capability but causes abrasion over time. The main parts are the ball, seals, stem, and bonnet. The ball is made of metal and seals are made of elastic materials like rubber. Ball valves come in several types based on body construction and port size and shape. They are used for drains, vents, and flowing systems due to their quick opening/closing, leak-proof operation, and ability to handle high temperatures and pressures. However, they are difficult to clean and not suitable for permanent throttling.

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    Ball Valve Types and Parts

    Uploaded by

    Abdul Mohid Sheikh
    99 views2 pages
    The ball valve is a rotational valve that uses a hollow ball to open and close the flow of fluid. It has good on/off and some throttling capability but causes abrasion over time. The main parts are the ball, seals, stem, and bonnet. The ball is made of metal and seals are made of elastic materials like rubber. Ball valves come in several types based on body construction and port size and shape. They are used for drains, vents, and flowing systems due to their quick opening/closing, leak-proof operation, and ability to handle high temperatures and pressures. However, they are difficult to clean and not suitable for permanent throttling.

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    The ball valve is a rotational valve that uses a hollow ball to open and close the flow of fluid. It has good on/off and some throttling capability but causes abrasion over time. The main parts are the ball, seals, stem, and bonnet. The ball is made of metal and seals are made of elastic materials like rubber. Ball valves come in several types based on body construction and port size and shape. They are used for drains, vents, and flowing systems due to their quick opening/closing, leak-proof operation, and ability to handle high temperatures and pressures. However, they are difficult to clean and not suitable for permanent throttling.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    99 views2 pages

    Ball Valve Types and Parts

    Uploaded by

    Abdul Mohid Sheikh
    The ball valve is a rotational valve that uses a hollow ball to open and close the flow of fluid. It has good on/off and some throttling capability but causes abrasion over time. The main parts are the ball, seals, stem, and bonnet. The ball is made of metal and seals are made of elastic materials like rubber. Ball valves come in several types based on body construction and port size and shape. They are used for drains, vents, and flowing systems due to their quick opening/closing, leak-proof operation, and ability to handle high temperatures and pressures. However, they are difficult to clean and not suitable for permanent throttling.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
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    Ball Valve Types and Parts

    Types of Ball Valve

    Introduction of Ball Valve


    Ball Valve Types and Parts:- The ball valve is a rotational motion valve. By rotating the hollow ball inside the valve, we can turn the valve on and
    off. It is very good at on/off operation, also good at throttling operation but the flow of fluid will cause abrasion to a ball that will cause leakage in close
    condition. When the hole of the ball is exactly at the pipe opening it is called open condition. When the hole is perpendicular to the valve opening then
    it is called close condition. You can observe different positions of the valve in the figure below. ( Types of Valves )

    Different Parts of the Ball Valve

    The ball and seals are the most important parts of the valve. The ball is made up of the same metal as the valve body. The seal is made up of
    elastomeric material like rubber, TFE, Nylon, etc. Due to the use of rubber as seals material, we can’t use this valve at high temperatures.
    The stem is not the same as the gate valve and globe valve. Here, the stem is not fastened with a ball but the small rectangular element will fill
    in the groove of the ball.
    The bonnet keeps the ball in position and ensures ease of operation. The bonnet is fitted with the valve body and to ensure leakage-free
    operation packing is provided. Packing is of TFE or rubber.

    Types of Ball Valve


    1. Based on Body Type: ( Types of Ball Valve )

    Here valve operation is the same in all types only difference is how parts are manufactured and assembled.

    1. Single Body
    2. Three-piece Body
    3. Split Body
    4. Top entry Body
    5. Welded Body

    2. Based on Valve Port: ( Types of Ball Valve )

    1. Full Port: Here, the valve internal diameter is equal to the pipe diameter.
    2. Reduced port and venturi port: Here, valve internal diameter is one pipe smaller than pipe internal diameter.

    Applications of Ball Valve

    As drains and vents for liquids and gaseous applications


    Found in flowing systems in ships and fire protection systems
    Not used in pharmaceutical industry due to difficulty in cleaning
    Used in clean services

    Advantages of Ball Valve

    Open and close quickly and provides leak-proof operation


    Maintains and regulate high temperature, high flow and high pressure
    Low maintainance cost
    Low initial cost
    Long service life
    Disadvantages of Ball Valve

    Very difficult to clean and prone to contamination


    Can’t use for permanent throttling

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