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Thread: EO double block and bleed valves and pipe class question on the P&ID

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    EO double block and bleed valves and pipe class question on the P&ID

    EO feed(OP=12 barg* OT= -25 C) to the reactor (OP=12 barg* OT=215 C)*and feed line seems climb upward to the Reactor top.
    I am just curious why this liquid fluild piping instead of gas fluid go upward.
    Morever* in our process* we don’t use a triconics interlock system with at least 2 - double block and bleed valves to assure isolation of the EO. We use 4 valves.
    Could any one professional kindly explain to me what is different in this two chooses?
    And* the other piping class question* genarrly the pipe class with more pound limts will have
    Higher design temperature limt also?


    Thank you very much for your kindly help.


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