The document discusses different types of valves and pumps used in fluid transport systems. It describes two main categories of valves: stop valves which shut off or control fluid flow, and check valves which allow flow in only one direction. Common stop valves include globe valves, gate valves, butterfly valves, and ball valves. Check valves include swing-check, lift-check, and ball-check valves. The document also discusses relief valves, pressure-reducing valves, and remote-operated valves. For pumps, it distinguishes between positive displacement pumps which move a fixed volume of fluid per cycle, and non-positive displacement pumps such as centrifugal pumps whose output depends on pressure.