Two new circulators, the E12 and E14, have been added to Armstrong Pumps' E Series high-efficiency, close-coupled circulators. Designed for high head, medium flow applications, they feature fully-enclosed motor housings for quieter operation -- essential for radiant heating and geothermal heat pump installations. Priced competitively, all E Series models use silicon carbide seal techonolgy for outstanding in-service life.