BACKFLOW PREVENTION PRACTICE EXAM Questions with verified answers 2023/2024

A backflow preventer creates a closed plumbing system that requires the installation of a(n) _____? A. Expansion tank B. Globe valve C. Pressure reducing valve D. Temperature and pressure relief valve E. Utility box key - ANS-Expansion tank A barometric loop must be installed 35 ft (10.7 m) above the highest ____? A. Boiler B. Fixture outlet C. Gate valve D. Service connection E. Water meter - ANS-Fixture outlet A check valve field test reported value of 0.8 psid (5.5 kPa) suggests _____? A. A passing check valve B. A broken or failed spring C. Debris in the check seat D. Disc softening or decay E. Low water pressure - ANS-Disc softening or decay A common backflow preventer on a double-wall heat exchanger with leak detection is ____? A. An air-gap separation B. An atmospheric vacuum breaker C. A double check valve assembly D. A reduced pressure principle assembly E. Nothing - ANS-Nothing A cross-connection may be a permanent piping arrangement or a(n) ____? A. Backflow preventer B. Church symbol C. OSHA hazardous area designation D. Railroad and highway intersection sign E. Temporary