fluid flow handling and controlling devices and components thereof, namely, metal pipes, both jacketed an non-jacketed, lined and unlined, dip pipes, both straight and curved for introducing fluids into and extracting fluids from a vessel, and extruded, pre-stressed, and metal pipe couplings, namely, tees, bends, cross-connectors and reducing flanges; metal valves, namely, ball valves, ball check valves, piston check valves, butterfly valves, and actuators therefor; sampling valves for obtain...