Armstrong Fluid Technology announces a new version of its Design Envelope pump to serve light-duty installations where the available power is single phase. The new pumps are available for use with single-phase power (200-230V) from 1/3 HP to 2 HP and, for increased reliability, are built to a design standard carried over from commercial pumps, the company notes. Also, the pumps can be installed and operated in vertical piping.

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