Abstract: An improved fluid control valve assembly employing a needle valve integrally formed on a non-rotating valve stem includes a metering orifice for engaging and forming a fluid seal with the valve needle, and a generally radially extending end face on the valve stem for engaging an opposing wall surface acting to positively stop the valve stem upon fully closing the valve and forming a seal between the metering orifice and valve needle to thereby avoid excessive loads and wear between the metering orifice and valve needle.

Abstract: A cyanide-free desensitizing or conversion solution for converting imaged electrophotographic masters to lithographic printing plates comprising:(a) from about 1.0 to about 3.0 percent of phytic acid;(b) from about 0.5 to about 2 percent of a water-soluble anionic polymer;(c) from about 1.0 to about 3.0 percent of a water-soluble dibasic acid; and(d) an aqueous carrier; all percentages being based upon the total weight of the solution, the pH of said solution ranging from about 3.5 to about 6.0.A method of using this solution to convert imaged masters is also disclosed.

Abstract: A liquid developer composition for visual development of latent electrostatic images in which the pigment particles dispersed in the liquid carrier is a metal-dithiooxamide product or a pigment coated with said metal-dithiooxamide reaction product whereby the liquid developer composition is relatively free of sludging.

Abstract: Water-soluble or readily water-dispersible fluxes for use in connection with soldering operations in plumbing and related or other environments, particularly for use in connection with the soldering of water lines made from copper or copper-base alloys. The said water-soluble or readily water-dispersible fluxes are produced in the form of pastes in which the paste-forming ingredients are water-soluble surfactants or mixtures of surfactants, especially those of nonionic character, with or without water, but especially where water is present in amounts of at least several percent by weight of the finished flux composition, said paste flux compositions also containing water-soluble amine hydrochlorides, and, advantageously, ammonium chloride, with or without various supplemental ingredients which, when used, are employed in small proportions.