The level of backflow protection required is influenced by the degree of hazard of possible contaminants.
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Q8: _ backflow is a reversal of normal
Q9: The minimum distance for an air gap
Q10: If a faucet with a 1/2" opening
Q11: _ backflow is a reversal of normal
Q12: The air gap is the best cross-connection
Q14: Back-pressure backflow is the same as back-siphonage
Q15: Air gaps are typically _ times the
Q16: Which of the following backflow protection methods
Q17: If a utility sink has a hose
Q18: A contaminated water supply system contains a
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