Third Edition, 2018

The intent of this manual is to assist in the education of selecting the applicable backflow device or assembly, by standard, based on the “degree of hazard,” and the type of backflow (backsiphonage and/or backpressure) present. Included in this document are all the current ASSE and ASME standards on backflow prevention devices and assemblies recognized in model US plumbing codes. This is an exceptional tool for cross-connection control classes. Contains an application chart on the current types of backflow prevention devices, applicable degrees of hazard, and recommendations for installation.

An electronic (PDF) version of this book is also available HERE.