Pumps for machines; Automated water-jet cutting machine that moves under computer-numerical-control (CNC) for use cutting and engraving metal, ceramic, stone, composites, plastic, wood, rubber, fabric, food items, and replacement parts therefor; Cutting heads for power operated waterjet cutting equipment; replacement parts for power operated waterjet cutting equipment, namely, nozzles, orifices, alignment inserts, housing inserts, adaptors, valves, tubes, water jet nuts, threaded discs, and seats; water pumps and replacement parts for water pumps used in power operated waterjet cutting equipment, namely, seals, hoops, back-ups, cylinders, stems, seats, rings, bearings, caps, poppets, springs, adaptors, tubes, pins, filters, needles, and cylinders; abrasive regulators for use with power operated waterjet cutting equipment; and abrasive pots for use with power operated waterjet cutting equipment