American manufacturer of disc pumps, based in Santee, California. Discflo has served the pumping industry since 1982 and reports more than 10,000 pumps sold worldwide. Instead of impellers and vanes, Discflo pumps use a stack of rotating discs (the patented Discpac): the fluid is moved by boundary layer and viscous drag in smooth, laminar, non-impingement flow, so the pump has no close tolerances, no radial loads on seals and bearings, very low pulsation and a net positive suction head requirement about one third of a conventional pump. This allows the pumps to handle fluids that clog or destroy conventional pumps: slurries with up to 80% solids, solids up to 10 in. (250 mm), entrained air or gas up to 70%, viscosities up to 700,000 cP, abrasive and corrosive media and shear-sensitive products. Maximum ratings of the range are 10,000 GPM, heads over 1,000 ft, 2,500 psi and temperatures up to 1,000 °F, with API 610 builds available. The programme includes horizontal, close-coupled, cantilever, multistage, sanitary (3-A, USDA, FDA), submersible and sump and dry-pit pumps, as well as self-priming systems, the P6 Polymix system and disc mixers, in metals (stainless steel, ductile iron, CD4, Hastelloy, titanium and others) and non-metal linings (PVDF, PTFE, ceramic, rubber, glass).