Thanks! Just trying to help. But that also means I am always "hocking my wares" on the Internet. But that is where people with problems go, and the CSV solves lots of those problems. Main problem is nobody knows what the problems are until they experience them. I usually get a call about a problem with a VFD after they are up and running for at least a few minutes. Lol! But the problems of variable speed pumps are many and can start with just how to wire the darn things. There are even many different opinions in the industry on that, mostly about grounding.
VFD's are great when they are working properly. They produce constant pressure at variable flow rates just like a Cycle Stop Valve. How could I not like that? VFD's are also very useful on things other than pumps like conveyor belts and escalators. I even have some on my plastic injection machines which are amazing. However, yesterday one threw alert that just said "INVERTER ABNORMAL ALARM" shutting down my whole plant. So, I am not talking very positively about VFD's today.
Besides selling little inexpensive Cycle Stop Valve is not like getting the big bucks for VFD’s, and I gotta keep the groceries on the table.