An assembly of valve sections includes an inlet section, an outlet section, a working section, and a working section. The tool has a cylindrical housing with an inner tube in the housing directing well fluids against a knock-out or deflector cone to accumulate debris in the annulus formed between the housing and tube. In another methodology, the market process provides the name of a broker to at least one of the trading processes; the broker may be a human or another software process. The first push-pull power amplifier comprises a first set of transistors including at least two radio frequency power transistors and a first output transformer. An output of said system is taken after the back reflection reduction device. The second nozzles have flow path lengths shorter than those of the first nozzles, the first and second nozzles are arranged alternately, and an average height of the paths of the first nozzles is greater than that of the paths of the second nozzles.