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Texas Irrigator License Exam Backflow Questions And Answers 2025/2026

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Texas Irrigator License Exam Backflow Questions And Answers 2025/2026 Air Gap - answer-Gap through air between lowest point of water supply & flood level rim. i.e. Sink water level & faucet Anti-Siphon Device - answer-Any device that introduces air into the system to prevent back siphonage. AVB (Atmospheric Vacuum Breaker) or PVB (Pressure-type Vacuum Breaker) Atmospheric Vacuum Breaker (AVB) - answer-Backflow device that allows air with use of a float. Shape: Like an L Back Pressure: No Constant Pressure: No more than 12 hrs in 24-hr period. Install Height: Vertically with min of 6" higher than all downstream piping and highest downstream head. Install: No shut-off valves downstream. Must be on discharge side of each control valve. Backflow - answer-Unwanted reversal of water flowBackpressure - answer-Where pressure in the discharge (outlet or downstream) side is greater than pressure in the supply (inlet or upstream) side. i.e. Gravity from elevation, pump, steam/air pressure. Backsiphonage - answer-Backflow from negative pressure in the system

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