Hi guys need help. We've been encountering compressed dry-air related problems here in our plant. Most machines pressures were fluctuating when their equipments are running. As I've checked, the problem is not regarding the pressure since the line pressure is 10psi higher than machine requirement. That's why I started to get data regarding their machines' flowrate requirement. To my surprise, the flowrate being supplied by the coupler is 18cfm which is only 1/2 of the total cfm that can be provided by our existing 8mm (ID) PUR hose- 38 to 45cfm. Machines' flowrate requirement (peak) is 30-34cfm. That's why I'm having a study on the possible standardization of all the cda coupler. My question is what formula can I use to justify that by having a larger coupler (ID) will not only increase the flowrate but also the pressure as well - this is base on actual as 2 different machines' pressure went 4 and 10 psi higher upon increasing their volume which is contradicting the Ideal gas law- P1V1=P2V2, with constant temperature.