It just states that the differential pressure is constant. I'd assume this would mean that with each difference there will be exactly 10% between them. Finding the change in flow rate from one interval to the next. Not sure if that helps at all...
I am struggling with calculating the valve size from a V250 rotary ball valve by Fisher Controls International. The below table states that natural gas is running through the vavle and the following properties apply:Natural Gas
Required volumetric flow rate [@ STP] 2.8 x 106 litre per...
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The max flow rate through a control valve with an equal percentage characteristic is 10 m3/h. If the valve has a rangeability ratio of 50:1 and is subjected to a constant differential pressure...