The water flow in my tap has started pulsating when I open it halfway. The pipe that feeds it comes from the water tank to a pump, to a Fiamma A20 expansion tank and to the tap. I have read several places that this is probably a pressure issue in the expansion tank, so I wanted to be sure that the pressure there is correct. But I read on the Fiamma website that the tank comes precharged at 0.9 bars, so is it at a lower pressure than atmospheric or am I missing something? It also says that you can adjust the pressure with a compressor, but if you want to be lower than atmospheric pressure you’d need something creating vacuum, not a compressor, or?
If anyone has ever checked the pressure on the expansion tank themselves I’d be very happy to know how you did it.
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