Centrifugal pumps designed according to ANSI B73.1 standard for abrasive and corrosive fluids. Constructed from cast iron, stainless steel, duplex, Hastelloy, or titanium. Shaft seal by single mechanical seal, double mechanical seal with cartridge, packing or centrifugal seal. Semi-open impeller that allows passage of solids and fibers up to 5 mm in diameter. Bearing housing in oil bath. Back pull out design that allows removing the rear section of the equipment, without disconnecting it from the piping.