In collaboration with the United Association of Journeymen and Apprentices of the Plumbing and Pipefitting Industry of the United States and Canada, the International Association of Plumbing and Mechanical Officials released the third edition of IAPMO’s Backflow Prevention Reference Manual. This full-color illustrated manual is updated to the latest editions of the plumbing, mechanical and fire-protection codes and standards. It also features expanded chapters with regard to non-testable devices and methods, as well as improved, updated and expanded testing/repair/troubleshooting information reflecting the latest products and procedures.