Problem
After more than 85 years providing nonchlorinated drinking water from groundwater wells, Bethpage (N.Y.) Water District was mandated to disinfect. The district chose 12.5 percent liquid sodium hypochlorite, but operators worried that the fluid’s tendency to outgas would affect the valved metering pumps.
Solution
The district had recently converted its soda metering diaphragm pumps to valveless CTS pumps from Fluid Metering. Pleased with the result, officials chose the company’s Chloritrol valveless hypochlorite injection system. The design uses one pump to meter hypochlorite, while a second pump head removes gas. The pumps self-prime against 125 psi and never lose prime or lock up due to fluid outgassing.
Both systems also have CeramPump metering technology, which uses a rotating and reciprocating piston for all fluid control functions. Ceramic components provided drift-free accuracy of 1 percent and eliminate recalibration.
Result:
The pumps are low maintenance, use power effciently, and have a more compact footprint than similar products. They have worked successfully in the system. 800/223-3388; www.fmipump.com.
