Backflow part 3 questions with accurate answers
1 Ans✓✓✓ The critical installation level for a water closet ball cock is
_ inches
1.0 psi Ans✓✓✓ The minimum pressure drop across each check of a
Double Check Backflow Prevention Assembly (asse 1015) in a static
condition must be at least
100 ft Ans✓✓✓ A pump discharge generating 43 psig will result in a
water column height of
14.7 Ans✓✓✓ At sea level the maximum vacuum possible is __ psia
33.9 foot column of water at sea level Ans✓✓✓ One atmosphere is
equivalent to a
A leaking #2 shut off valve Ans✓✓✓ Which of the following
conditions would not cause a properly operating pressure differential
relief valve to open
A malfunction of the relief valve mechanism Ans✓✓✓ During a static
condition a fouled #2 check valve results in ____ on a RPZ
A malfunction of the relief valve mechanism Ans✓✓✓ If during a field
test of an RPZ (asse 1013) the relief valve fails to open the probable
cause is
, Admit air into the system Ans✓✓✓ To stop a siphon in a potable water
system one must
Allow contamination of the system from Backsiphonage (Venturi effect)
Ans✓✓✓ A small hole in the underground potable water distribution
system may
An indirect cross connection Ans✓✓✓ A submerged garden hose being
used to fill a swimming pool would be considered
Atmospheric vacuum breaker Ans✓✓✓ Asse standard 1037
(flushometers for plumbing fixtures) requires an
Back siphonage Ans✓✓✓ An indirect cross connection allows what
type of Backflow to occur
Boiler system make up water line,service connection to a residence,
service connection to a car wash Ans✓✓✓ An atmospheric type
vacuum breaker (asse 1001) cannot be installed in a
Chemical reaction Ans✓✓✓ A carbonated beverage machine requires a
Backflow preventer for beverage dispensing equipment (asse 1022) This
protection is needed due to the potential
1 Ans✓✓✓ The critical installation level for a water closet ball cock is
_ inches
1.0 psi Ans✓✓✓ The minimum pressure drop across each check of a
Double Check Backflow Prevention Assembly (asse 1015) in a static
condition must be at least
100 ft Ans✓✓✓ A pump discharge generating 43 psig will result in a
water column height of
14.7 Ans✓✓✓ At sea level the maximum vacuum possible is __ psia
33.9 foot column of water at sea level Ans✓✓✓ One atmosphere is
equivalent to a
A leaking #2 shut off valve Ans✓✓✓ Which of the following
conditions would not cause a properly operating pressure differential
relief valve to open
A malfunction of the relief valve mechanism Ans✓✓✓ During a static
condition a fouled #2 check valve results in ____ on a RPZ
A malfunction of the relief valve mechanism Ans✓✓✓ If during a field
test of an RPZ (asse 1013) the relief valve fails to open the probable
cause is
, Admit air into the system Ans✓✓✓ To stop a siphon in a potable water
system one must
Allow contamination of the system from Backsiphonage (Venturi effect)
Ans✓✓✓ A small hole in the underground potable water distribution
system may
An indirect cross connection Ans✓✓✓ A submerged garden hose being
used to fill a swimming pool would be considered
Atmospheric vacuum breaker Ans✓✓✓ Asse standard 1037
(flushometers for plumbing fixtures) requires an
Back siphonage Ans✓✓✓ An indirect cross connection allows what
type of Backflow to occur
Boiler system make up water line,service connection to a residence,
service connection to a car wash Ans✓✓✓ An atmospheric type
vacuum breaker (asse 1001) cannot be installed in a
Chemical reaction Ans✓✓✓ A carbonated beverage machine requires a
Backflow preventer for beverage dispensing equipment (asse 1022) This
protection is needed due to the potential
