7 Pumps, namely, centrifugal pumps and positive displacement pumps, in the nature of reciprocating pumps, two- and three-screw pumps, gear pumps, metering pumps and progressive cavity pumps, parts for said pumps, assemblies containing said pumps and related equipment, namely, drivers, couplings, safety guards, and structural and system components and controls, pump units, consisting of pumps, drive motors, couplings, gears and control devices or control apparatus; parts of pumps for the aforementioned goods, namely, pump housings, pump shafts, running wheels, leading wheels, screw spindles, bearings; safety valves, pressure stop valve and control valves for pumps; multiphase booster systems, consisting of two-screw and progressive cavity pumps, valves, piping and control devices or control apparatus; gas compressor systems, consisting of screw compressors, valves, piping and control devices or control apparatus; oil suction apparatus; static and dynamic seals for pumps; magnetic couplings for rotary and centrifugal pumps; centralized lubrication and oil purification systems comprising lube, seal and control oil systems, lube oil consoles, gas seal panels, piping, box lubricators, and replacement parts therefore; centralized lubricators for industrial apparatus; lubricators; lubricators for high speed spindles; oil mist lubricating systems equipment, bearings and seals, bearing and seal systems, cartridge sealing systems, oil mist motors and oil mist generators for use in rotating equipment applications; air operated oil mist generators for mixing oil with air to form oil mist, oil mist classifiers for converting oil with air to form oil mist, and electrically operated oil pumps and air compressors; oil centrifuges, oil drain pumps, oil filter adapters, oil separators for oil mist lubrication, grease distribution, and circulating lubricating oil and power-operated oil dispensers for machines