UPDATE!!!!2025/2026|GUARANTEED
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
In approved Errgott must have at least __________of free air space - ANSWER A
minimum of two pipe diameter of the supply pipe or 6 inches which ever is lesser
What is the most important step before installing backflow prevention assemblies in new or
existing lines - ANSWER Play planes will be flushed all chips scale and foreign matter
A parallel side-by-side backflow prevention assembly installation as desired in order to -
ANSWER Allow for testing and maintenance
1
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
In approved Errgott must have at least __________of free air space - ANSWER A
minimum of two pipe diameter of the supply pipe or 6 inches which ever is lesser
What is the most important step before installing backflow prevention assemblies in new or
existing lines - ANSWER Play planes will be flushed all chips scale and foreign matter
A parallel side-by-side backflow prevention assembly installation as desired in order to -
ANSWER Allow for testing and maintenance
1
