TREEO Backflow Repair Certification Questions with Solutions

TREEO Backflow Repair Certification Questions with Solutions What is the minimum for CV 1 in the RP? 5 psi What is the RV spring minimum? 2 psi Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:12 / 0:15 Full screen Brainpower Read More At what height should RP be installed? 12"-36" Why install assemblies in parallel? to maintain service while testing or repairing What is the most important step before installing an assembly? flushing supply lines Whaat is the definition of backsiphonage? backflow caused by a drop in supply pressue below atmospheric pressure How do you stop backsiphonage? add air What type of gauge do you use to test the RP? differential pressure gauge Can you test the RP with water flowing to the customer? no the assembly must be static How do you know if the outlet shut off valve leaks? the RV may not open while testing In test #5 on the RP, close test cock #2 and the gauge needle rises, what's wrong? the outlet shut off valve leaks with backpressure While testing, the RV does what if the outlet shut off vavlve leaks? RV tries but may not open RV does what if CV 2 leaks during test #3? RV drips What holds the RV closed? supply pressure What holds the RV open? RV spring If there is a drop in supply pressure what does the RV do? opens to dump the zone If there is backpressure on the RP what does the RV do? Nothing unless CV 2 leaks What causes the RV to spit? line pressure fluctuation The RV drips after closing the shut off vlave. Why? CV 1 leaks What do you do before starting a repair? Read the instructions Explain backflow the reversal of the normal direction of flow Explain cross connection. a link between the potable and non potable systems Explain the term backpressure. where the customer's pressure is greater than supply pressure How far can water be backsiphoned? 33.9 feet What single item at home causes the most incidents of backflow? garden hose Water traveling at high veloctiy past a small opening can cause backsiphonage by? Venture Effect A water column one foot in height equals how many psi? 0.433 psi One psi equals how many feet or inches? 2.31' or approximately" What is the appropriate height of an air gap? twice the diameter or at least 1"