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Recent content by Nemara

  1. Nemara

    Plug material selection

    in selection of valve's plug and seat ring material for a water service application which is the better & right material to use 316L S.S or 420 S.S
  2. Nemara

    Plug material selection

    Dear All, As stainless steel materials used for the valve trim parts like the plug and stem, which is more sufficient to be selected 316L grade or 420 grade knowing that the application service through the valve, Thanks
  3. Nemara

    Hydrolic Amplifier

    Dear Gerhardl, I appreciate your reply 1. The oil is not sufficiently controlled at upstart, see necessary force at low pressures/speeds and recommendations. - [highlight #EF2929]The oil pressure supply is sufficient nd stable at 10 bar we use an accumulator with nitrogen for blanketing the...
  4. Nemara

    Hydrolic Amplifier

    Hi guys, In my plant there is a steam turbine for a hydrogen compressor the problem is there is a fluctuation in the turbine speed. does anyone faced a same phenomena the hunting is caused by the vendor recommendation by the oil supply for the Woodward hydraulic amplifier, the governor is an...
  5. Nemara

    Dear all; please I want a clear ex

    Hi Danlap, Thanks for your feedback I really appreciate that's what I was looking for :)
  6. Nemara

    Steam jackets

    Dear All, Is it technically POSSIBLE to provide Steam Jacket on a lug style butterfly valve for operating conditions in my refinery to keep the valve body hot and avoid crystallization (solidification of the service fluid H2S which cause stuck for the valve) Thanks in advance for your feedback...
  7. Nemara

    Dear all; please I want a clear ex

    Dear all; please I want a clear explanation for the difference between Wafer, Lugged & double flanged butterfly valves & in what operating conditions to chose between these three types. Thanks in advance for your feedback
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