AQUAMOTION AM55-FVL ECM CAST IRON CIRCULATING PUMP FOR HYDRONIC HEATING SYSTEMS.VARIABLE SPEED HIGH EFFICIENCY PUMP,DRAWS FROM .07-.57 AMPS/4 BOLT FLANGE WITH 10FT CORD.WATT CONSUMPTION BETWEEN 5-38 WATTS.VARIABLE SPEED EINSTIEN DESIGN ALLOWS PUMP TO AUTOMATICALLY ADAPT TO SYSTEM DEMANDS.USA  MANUFACTURED IN WARWICK,RI.BUILT IN CHECK VALVE .