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Process Operation Technology

Oil, gas and petrochemical process industries


    PLUG VALVES

    Talib Al_Munawri
    Talib Al_Munawri
    Director-General
    Director-General


    Posts : 337
    Join date : 2009-07-03
    Age : 36
    Location : Sultanate of Oman

    PLUG VALVES Empty PLUG VALVES

    Post by Talib Al_Munawri Thu Sep 17, 2009 9:50 pm

    PLUG VALVES



    PLUG VALVES Hosting-88696a1891

    The plug valve is one of the simplest types of valve. It is also
    known as a petcock or a plug cock. Like the gate valve it is only
    used in the fully open or fully closed position. The plug is
    a tapered round plug. It has a rectangular hole in the centre
    that lines up with the ports in the valve body.


    The valve has a handle for manual operation. It is opened or closed
    by a quarter turn of the valve handle. When the valve handle is
    pointing in the direction of the pipe the valve is in the fully
    open position. When the valve handle is pointing across the pipe
    the valve is in the fully closed position.



    A special grease is forced into and around the plug to act as a
    seal and a lubricant. These valves are a simple design.
    They do not take up much space and do not have high yokes, bonnets
    or valve stems. Normally these valves are manually operated but
    they can be operated automatically if required.




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