8 years in service with no problems. Two 3HP, one 5HP centrifugal pumps. One 10HP submersible with 3” Cycle Stop Valve, and one 5HP with 2” Cycle Stop Valve. 5 Cycle Stop Valves total on this system. Can’t imagine how much it would cost to try and keep VFD’s working on a system like this.
Gary Kirkham