Backflow Exam | 112 Questions and Answers
100% Verified | Updated 2024-2025
Double Check Valve Assembly - ANSWER A testable mechanical device
consisting of two independently operating, spring-loaded check valves, four test
cocks, and two full port shut off valves
the purpose of an ASSE 1018 trap primer is to - ANSWER maintain a trap
seal
a laboratory faucet vacuum breaker must contain - ANSWER two
independently acting check valves
ASSE 1060 - ANSWER outdoor enclosures standard, freeze protective
enclosures must provide protection to a remedies of -30 f
device - ANSWER a backflow prevents generally consisting of a single valve
body not capable of being field tested using a differential gauge
to stop a siphonic actin within a potable water system, we must - ANSWER
admit air into the system
waterborne diseases - ANSWER typhoid, cholera and giardiasis
a double check detector assembly installed on a antifreeze loop area requires -
ANSWER replacement
, removal of the relief valve spring on a reduced pressure principle assembly will
cause the assembly to - ANSWER become a approved double check valve
assembly
when testing the first check valve in the direction of flow on a reduced pressure
assembly using a sight tube the tube must be a minimum of - ANSWER
138.75
continuing discharge for a reduced pressure principle assembly during a no flow
condition may be caused by - ANSWER a debris fouling the number one
check valve
negligence - ANSWER not meeting ones responsibility and causing harm
residual pressure - ANSWER the pressure available at a fixture or water
outlet after allowances are made for pressure
natural or propane fires domestic water heatersbare protected from excess
pressure by the installation of a.. - ANSWER thermal expansion tank
installation of backflow assemblies results in - ANSWER decrease in system
water pressure
according to the manufacturers instructions valve levers on a t&p relief valve
should be operated at least - ANSWER every 12 months
the installation of backflow asswmblies result in - ANSWER velocity spike
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