Lee Stockwell
FOJL
If a pump is capable of only 3gpm that is what it will do with an open line, its flow limit.Im really not that interested to know. Both vans hold 100 gallons and I've put the tools from the WM in the butler because the WM has been down. I've been cleaning the same apartments I always do and I'm using a lot less water.
My courtesy hose on the WM fills a mop bucket more than twice as fast as the butler too. Doesn't matter what pressure its set at.
Likewise a 5gpm pump with an open line.
With equal jetting the only way to increase flow is to raise pressure...until you reach the flow limit of each pump. You can cheat that by turning the pump faster via pulley sizes