Hi guys, you are my last hope. I need to control the flow on my project pump that uses a PWM driven stepper controlling a 1" ball valve. The the problem is the current valve takes a full minute to fully open and close. Does anyone know of a faster responding "modulating water valve"? On and off will not work, it must be a variable water valve for a 1" line at 20 GPM Max and 65 PSI max.