I have a pressure tester for my coffee machine so there's got to be flow/pressure meters for water systems. Can't you ask plumber - there's bound to be one on here that'll check pressure for a pint or two.
@hippy started
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I have a pressure tester for my coffee machine so there's got to be flow/pressure meters for water systems. Can't you ask plumber - there's bound to be one on here that'll check pressure for a pint or two.