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    What does PSI mean?


    What does PSI mean in plumbing terms? What is the importance of PSI?

    Asked by jonathan on 2nd Sep 2021
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    "Psi stands for pounds per square inch. Its a unit of measurement ie a certain pressure in your car tyre for example"

    Answered on 11th Nov 2021 - Member since Aug 2021 - report
    complete Repair Ltd

    "Its the measurement of Pounds per square inch in pressure value."

    Answered on 11th Nov 2021 - Member since Jan 2021 - report
    Arc Electrical Cumbria

    "I think it means Pounds per Square Inch, but most boilers and pressurised water systems use the European term “Bar”
    It’s like tyre pressure, in a car manual it normally quotes Bar and PSI
    It’s a unit of pressure normally related in the plumbing world as the water pressure of the incoming supply, boiler radiator pressure etc. I am not a fully qualified plumber and only do minor plumbing repairs, so it might stand for something else?"

    Answered on 11th Nov 2021 - Member since Aug 2017 - report

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