1. Any backflow prevention device required herein shall be of a model and size approved by the Manager. The term “Approved Backflow Prevention Device” shall mean a device that has been manufactured in full conformance with the standards established by the American Water Works Associations (AWWA) entitled: AWWA C506-69 Standards for Reduced Pressure Principle and Double Check Valve Backflow Prevention Devices and by the American Society of Sanitary Engineers (ASSE) entitled:
No. 1001 Pipe Applied Atmospheric Type Vacuum Breakers - ANSI Approved - 1982 - Revised, 1988
No. 1011 Hose Connection Vacuum Breakers - ANSI Approved 1982
No. 1012 Backflow Preventer/Intermediate Atmospheric Vent - 1978
No. 1013 Reduced Pressure Principle Backflow Preventer - Revised 1988
No. 1015 Double Check Backflow Prevention Assembly - Revised 1988
No. 1019 Wall Hydrants, Freezeless, Automatic Draining, Anti-Backflow Types - ANSI Approved 1978
No. 1020 Vacuum Breakers, Anti-siphon, Pressure Type - ANSI Approved 1982