Designed for the fourth-year plumbing apprentice, Plumbing 401 uses a clear, easy-to-read writing style to provide a thorough understanding of practical plumbing installations and national plumbing codes. Coverage spans residential, commercial, industrial and institutional arenas, and includes important topics such as service and repair, blueprint reading, installation practices, heating systems, and related science and plumbing codes. Practical in its approach, with an emphasis on both safety and the latest plumbing technology, this guidebook will prove to be a valuable resource for apprentice and licensed plumbers alike.