questions with accurate answers
A Bypass of a Backflow prevention assembly may be permitted only if
the assembly in the bypass: Ans✓✓✓ Is the same type
A continuous relief valve discharge from an RP cannot be caused by
what? Ans✓✓✓ Line pressure fluctuations
A water supply other than the purveyors approved supply that is
available to a premise is called: Ans✓✓✓ Auxiliary Water Supply
According to the Safe Drinking Water Act, the primary responsibility for
preventing water from an unsuitable or unsafe source from entering the
public water systems lies with the: Ans✓✓✓ Water utility supplying the
water
According to USC, what is the correct height for installing a RPZ?
Ans✓✓✓ 12 inches above grade, but no more than 36inches
According to USC, what is the correct height to install an atmospheric
Vacuum breaker? Ans✓✓✓ 6 inches above the highest downstream
point
An atmospheric vacuum breakers is designed to protect against?
Ans✓✓✓ Pollutants and Contaminants, but under backsiphonage only
, As the velocity of water increases, pressure: Ans✓✓✓ Decreases
At what point is the relief valve in a RP required to open? Ans✓✓✓
2.0psid
Atmospheric pressure at sea level is _____psi Ans✓✓✓ 14.7
Atmospheric pressure is defined as: Ans✓✓✓ the pressure exerted by
the weight of the air upon the earth
Backflow Prevention assemblies are often installed in parallel in order
to: Ans✓✓✓ Maintain service during testing and repairs
Backflow prevention by contaminant means" Ans✓✓✓ Placing a
Backflow preventer at the meter
Backpressure against CV#1 of an RP will cause which of the following:
Ans✓✓✓ relief valve to dump
Bypass/vent hose should be connected to: Ans✓✓✓ TC#4
High side hose should be connected to: Ans✓✓✓ TC #2
How can backsiphonage action be broken Ans✓✓✓ Air Gap