In keeping with this issue’s focus on pumps, we are visiting and revisiting some questions we are commonly asked about pump installation and use.The questions relate to the use of multistage pumps, estimating the cost of operating a pump, making sure that the pump is connected properly to the piping system, watching the piping system to make sure it is not freezing, minimizing solids in lift stations and the impact of solids on pumps.Multistage issuesMultistage pumps operate at higher heads for lower flow rates. This is advantageous where septic tank effluent is being pumped or on a site with a
