Block and Bleed valve | What is a block and bleed valve used for? | block and bleed valve function.

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  • Опубліковано 24 гру 2024

КОМЕНТАРІ • 16

  • @Coreengineers
    @Coreengineers  2 роки тому +1

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  • @rajesh2oman
    @rajesh2oman Рік тому +2

    great and simple

  • @chemhassan
    @chemhassan Рік тому +3

    i wonder, what about the NH3 that already passed the 2nd I/V going to the pump. is it pumped entirely (but i think pumping this way will damage the pump as it only accepts liq or there is no air? ). im confused tbh

    • @Coreengineers
      @Coreengineers  Рік тому +2

      Liquify it first via providing steam then drain completely it could be easily ensured from the drain line....then only close the valve to give to maintenance.

  • @mawaddatali4184
    @mawaddatali4184 9 місяців тому +2

    So nice way of understnd.thaks

  • @zeineb8870
    @zeineb8870 Рік тому +1

    Thank you for the explanation! Is a feed and Bleed operation the same thing?

  • @manikmule
    @manikmule Рік тому +2

    But if we are doing maintenance of Pump, then is it really necessary to bleed this small portion in between two i/vs, as per my understanding after right hand side i/v, there is drain valve arrangements, or else for extra precousinary measure at bleed valve, is there slope necessary ??

    • @Coreengineers
      @Coreengineers  Рік тому

      It's depends on process requirements...yes you must bleed that valve when you're stoping the pump or doing changeover so that any traces could be escape

  • @amitkumar-sh2lk
    @amitkumar-sh2lk 6 місяців тому +1

    it is being used in iocl. in tank inlet outlet. so that oil should not leak

  • @sjcho1505
    @sjcho1505 2 роки тому +1

    Thank you for your explanation. Just one quick question. Do we drain NH3 to safe place through the bleed valve? I just want to know how to drain NH3 safely. Do we have to install tubing line to connect from the bleed valve to safe place?

    • @Coreengineers
      @Coreengineers  2 роки тому +1

      we bleed it and sent to tank(where waste ammonia soln will come) so that it could be recover again via reaction to produce urea.

    • @tisdale36
      @tisdale36 Рік тому

      We use these for phosgene, we have a vacuum system we call an evacuation that we hook to the bleed and it's always sucking on it.

  • @escapade9657
    @escapade9657 2 роки тому +1

    What if block valve found passing after isolation

    • @Coreengineers
      @Coreengineers  2 роки тому +1

      it depends which block valve is passing if first one then close the upstream i/v and if second one then close first one ensure there is no gas from the bleed i/v.
      if both then close the upstream i/v of the first one!
      Hope you got the point!

  • @solankiajendrakumar7607
    @solankiajendrakumar7607 2 роки тому +1

    Why not just used one single block valve in this design so we don't have to use bleed valve?

    • @Coreengineers
      @Coreengineers  2 роки тому +2

      this double valve is for the extra safety you may say let's suppose if there is a toxic fluid and your valve passes or malfunction so that's why there is a double valve and one bleed valve between them to bleed that toxic fluid