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What do mpa mean ?

Discussion in 'Plumbing and Central Heating' started by pogo, 9 Oct 2012.

  1. pogo

    pogo

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    Hi,
    I purchased a new pump for my boiler from a plumbing shop I was given the model to fit my boiler but My old pump says max 3 bar but the new pump says max 0.3MPa can anyone tell me what this means are they the same thing as I do not want to fit if wrong
     
  2. ianmcd

    ianmcd

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    Mpa stands for Megapascals and the conversion rate is 0.1 so 3 Bar is 0.3 Mpa so the pump you have is correct
     
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  4. Armo74

    Armo74

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    Megapascals :D Beat me to it :LOL:
     
  5. Inky Pete

    Inky Pete

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    Pascals (Pa) are the standard metric measure of force per unit area - pressure, in other words. 1 Pascal being defined as being equivalent to 1 Newton of force per square meter.

    1 Bar is an old imperial measure of pressure and is equivalent to a standardised value of atmospheric pressure at sea level, this is approximately 14.5 pounds per square inch (psi)

    Purely by coincidence, the standardised atmospheric pressure at sea level comes out at almost exactly 100,000 Pascals (101,325 to be exact) or 0.1 MegaPascals (MPa). So you get a nice neat conversion factor of 0.1 between MPa and Bar, even though they're really nothing to do with each other.
     
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  7. ianmcd

    ianmcd

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    Pete have you ever thought about being a chaser on the TV show called the Chase ?
     
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