Abstract: A double walled manifold assembly for a cryogenic fluid, such as liquid oxygen, is assembled as alternating bellows portions and tee portions. The inner bellows portions have a greater axial length than the outer bellows portions to enable welding of an inner conduit assembly with the outer bellows portions surrounding the inner bellows portions. The outer tee portions are fabricated in two pieces which are welded together and to the outer bellows portions to complete the assembly.

Abstract: A nozzle body of a molded spray head forms a path for a highly pressurized carrier fluid. The fluid path includes a rectangular-section, diverging outlet and a spray nozzle spaced upstream therefrom in a suction chamber for directing the carrier fluid in a spray pattern spaced inwardly of and parallel to the walls of the diverging outlet. A chemical product is selectively passed into the suction chamber for entrainment about the carrier fluid. Avoiding impingement of the carrier fluid spray upon the walls of the nozzle outlet helps to maintain the 600-1000 psi pressure of the carrier fluid flow throughout the nozzle body for increased impact pressure upon surfaces to be sprayed.