American Backflow Prevention Assoc.
BSI Backflow Solutions
USC Foundation for Cross-Connection Control and Hydraulic Research
WARNING: Installation of a backflow prevention device could cause thermal expansion resulting in potential serious bodily injury and/or property damage. When installing a backflow prevention device, you must consult with a professional plumber to protect against thermal expansion AND ENSURE ALL NECESSARY PRECAUTIONS ARE TAKEN. For more information on thermal expansion, please visit our Thermal Expansion section under Cross Connection Control and Backflow Prevention in this website.