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  • Users: anber
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  1. anber

    control valves

    hey BigInch , thanks for your reply but i need more clarification of the energy that is consumed ,, is that energy translated to the pump to increase head and decreases flow right ?
  2. anber

    Restricted orifice

    Let me clarify that this branch is not the critical branch , this means that there is another branch that has the heighest head at which the pump respond to it . The branch i am talking about is not the critical branch so it will have excess pressure ,, now we use the orfice which decreases...
  3. anber

    control valve question needs help

    Thank you littleInch so what i said was true and you clarified it in a perfect way ,, Thank you zdas04
  4. anber

    Restricted orifice

    flow rate is 17 m3/h and i already made the whole system on the pipenet programe and one branch has this excess pressure , so i need to reduce the pressure only on this branch whithout affecting the flow rate
  5. anber

    control valve question needs help

    Thank you for your response, so it is right that the pump itself is what controls the flow rate with response to the resistance created by control valve ?
  6. anber

    control valve question needs help

    I know that if we have a pump connected to a pipe which have a control valve ,as we change the opening of the valve , the resistance of the system decreases or increases and the pump moves on its curve and the flow rate from the pump itself changes , so the control valve controls the flowrate in...
  7. anber

    control valves

    mmmm i still don't get it ,,if the cv is throttled to a certain value , so the system resistance increases , the pump head increases and the flow rate decreases . Now assume that at this certain valve opening , the pump produces p=6 bars and flow rate of 80 m3/h,,, now this flow rate is divided...
  8. anber

    control valves

    hi, eloyRD ok after the system curve goes up and the pressure increases and the flow reduces and the flow will split in each branch and the branch that contains the cv will have flowrate of 60 ,, so does this flowrate will decreases as it passes through the cv or will remain the same ? i am...
  9. anber

    Restricted orifice

    well we have a system with pump and multi-branches , one branch has flowrate of 17 and pressure of 4 bars ,, we need to decrease the pressure to 1 bar so we use a restriction orifice , now does the flow rate will be affected ? if the application at the end of the branch needs the flowrate of 17...
  10. anber

    control valves

    In my work we design a system in power plant . It has a pump and multi-branches, now we use a software to calculate the exact head and flow rate of pump. The system in the start up will need pressure of 6 bars and flow rate of 86 m3/h and in normal operation it need a pressure of 3 bars and flow...

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