System solves accuracy drift

Problem

The Bethpage (N.Y.) Water District metered caustic soda with diaphragm pumps, but accuracy drifted between maintenance periods and the check valves needed routine service.

 

Solution

The district replaced the pumps with the CTS Valveless Piston Pump system from Fluid Metering. The only moving part, a rotating and reciprocating ceramic piston, controls all fluid functions. The sapphire-hard ceramic internals provide drift-free accuracy of better than 1 percent for millions of cycles without recalibration.

 

Result

Downtime was almost eliminated. The system uses less power and has a smaller footprint than the original pumps. 800/223-3388; www.fmipump.com.

 

Retrofit vitalizes pump stations

Problem

The Town of Wolcott, Conn., needed to rehabilitate four pumps in two aging pump stations. “They are deep can stations, making it difficult to mobilize materials and modify the piping,” says administrator for sewer and water Phil Olmstead. “It also was crucial not to disturb the integrity of the steel chamber’s shell, which welding could do.”

 

Solution

Without any modifications, Smith & Loveless After Market replaced the pumps with vertical 4B2A S&L non-clog pumps on stands. The units, which dropped in and were bolted in place, have oversized stainless steel shafts, bronze mechanical seal housings, and cast iron balanced impellers. The combination, with NEMA-rated premium efficient motors, limits the potential of mechanical seal failure.

 

Result

One pump station increased efficiency a minimum of 9 percent and the other by 5 percent. 800/898-9122; www.smithandlove less.com.