The part of the pipe that is above the highest piston travel point is the delivery pipe and the part at the lowest point is the suction pipe. This is a larger scale of a lifting pump.
black and white lifting pump, delivery pipe, lifting pump, pipe, suction pipe, what does a delivery pipe look like, what does a suction pipe look like., what is a delivery pipe, what is a lifting pump, what is a suction pipe
International Correspondence Schools A Textbook on Mechanical and Electrical Engineering (Scranton, PA: International Textbook Company, 1897)
Courtesy the private collection of Roy Winkelman