"Flowchem" Series PPF pumps are "Centrifugal Process Pumps" in Back Pull-out Construction , Horizontal, Foot Mounted, Single stage, End suction and Top Centerline Discharge, confirming to DIN 24256 ISO 2858, standards and in general confirming to API 610 as well.Impellers are provided either with Back Vane or Back Wear Ring to minimize Axial Thrust and Gland Leakage.