i am fairly certain this pump will give you at leat 1.5 bar of pressure. the info is a little confusing but this is how i read it:
Q 10-37 l/min - i'm guessing this means that it will supply between 10 and 37 litres per minute although it's a bit of an ambiguous format.
Hmax 43m - this is probably more meaningful - I interpret that to be 43 metres of head. 1 metre = 0.1 bar so 43 metres will give 4.3 bar at its maximum output. does the pump have a manual pressure setting?
you could always contact lowara and quote the model number - PBM 16/a (16 amps) and ask if you want to be sure.
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