Backflow
multiple choice
test #1 with
100% correct
answers (graded
A+)
Which type of backflow preventer is most reliable - answer Air gap
What is the maximum pressure drop a little through a double check
now assembly - answer 10 psi
To break the back-siphonage action the best approach is - answer
Introduce air into the system
The maximum height that water can be drawn above a free water
surface by back-siphoange is - answer 34 feet
Watermain pressure is drastically reduced to a reduce pressure
principal backflow preventer the relief valve should - answer Always
open to discharge the water in the zone
multiple choice
test #1 with
100% correct
answers (graded
A+)
Which type of backflow preventer is most reliable - answer Air gap
What is the maximum pressure drop a little through a double check
now assembly - answer 10 psi
To break the back-siphonage action the best approach is - answer
Introduce air into the system
The maximum height that water can be drawn above a free water
surface by back-siphoange is - answer 34 feet
Watermain pressure is drastically reduced to a reduce pressure
principal backflow preventer the relief valve should - answer Always
open to discharge the water in the zone
