This manual for the classroom instructor provides the basic trade knowledge and product data required by the student and the graduate plumber. It is also useful as an on-the-job reference. First, an information page on metric conversion is provided. The contents are presented in what is considered to be the most logical instructional sequence. Topics covered in the 38 parts include tools and equipment used in the plumbing trade; rigging and hoisting materials, equipment, and methods; safety practices, flammable materials, and torches; pipe, fittings, and joints made of various materials; the victaulic grooved piping method; pipe hangers and supports; oxygen and acetylene welding; electric-power tools, equipment, and accessories; power-actuated tools; installation of bathroom and other fixtures; maintenance of plumbing systems; private sewage-disposal systems; public underground water-distribution systems; domestic-water pumps, softeners, and conditioners; corrosion of metal and its prevention; cross-connections and protection devices; connecting hospital equipment; compressed-air systems; design of water-distribution systems; insulations for piping, fittings, and equipment; proprietary plumbing systems; and symbols for architectural drawings. The manual is illustrated with numerous figures and tables. (YLB)