March circulating pumps with seal-less magnetic drive offer the ultimate in reliability for commercial, industrial, or domestic hot water systems. Their proven performance has estabilished March as a leader in pioneering advancements for hydronic and solar systems. . . the only Magnetic Drive pump currently recommended by Dow Corning for their Syltherm™ 444 heat transfer liquid.
Standard models operate at up to 250°F. for water. With minor modifications some models can be used with oil at up too 350°F. Special designs available for up to 500°F. The 809 series and 821 series are U.L. recognized.