Join Date: Feb 2012
Location: Victoria, Canada
I have my regulator set to 20 psi then fine tune it with my metering valve. If it was any less than 20 psi no bubble would go through even if the metering valve is all the way open. When I adjust the metering valve it takes about a minutes for the built up pressure between metering valve and bubble counter to show a change. I checked for leaks and there were none.