Backflow Prevention Assembly Tester Training
questions with accurate answers
0.433 Ans✓✓✓ For every one foot of water you generate how much
PSI?
1 PSID Ans✓✓✓ Minimum standards for passing check valve
100 psi Ans✓✓✓ Maximumun pressure delivered to customers
14.7 PSI Ans✓✓✓ Atmospheric Pressure at sea level
2.31 feet Ans✓✓✓ 27 3/4 inches
2.31 ft Ans✓✓✓ 1.0 PSIG
20 psi Ans✓✓✓ Minimum system pressure
27 3/4 Ans✓✓✓ 2.31 feet of head
3 methods for testing check valves Ans✓✓✓ 1. Seating with
backpressure
2. Seating with flow
3. Differential (PSID)
,33.9 feet Ans✓✓✓ Only pertains to suction/vacuum. Absolute furthest
water can be pulled up a column under a complete and total
vacuum/siphonage
35 psi Ans✓✓✓ Minimum static pressure
4 preliminary steps to testing Ans✓✓✓ Notify, identify, inspect, or
observe.
4,3,2,1 Ans✓✓✓ Flush test cocks in this sequence
60 psi Ans✓✓✓ Average working pressure
62.4 Ans✓✓✓ (7.48 gal/ft3)(8.34lbs/gal)
7.48 gallons Ans✓✓✓ 1 ft3 of water
8.34 lbs Ans✓✓✓ 1 gallon of water
A valve designed to open in the direction of normal flow and close with
the reversal of flow. Ans✓✓✓ Check valve
, Actual Cross Connection Ans✓✓✓ Any arrangement of pipes, fittings,
that connects a potable water supply directly to a non-potable source at
all times.
Air Gap Ans✓✓✓ A physical seperation between the free flowing
discharge end of a potable water supply pipeline and the highest flood
level of an open or non-pressure receiving vessel.
Air Gap Ans✓✓✓ In plumbing, the unobstructed vertical distance
through the free atmosphere between the lowest opening from any pipe
or outlet supplying water to a tank, plumbing fixture, or other container,
and the overflow rim of that container
Air Gap Ans✓✓✓ Requires a minimum vertical air space 2 pipe
diameters above the flood rim.
Requires a minimum 1 in. Distance.
Air Gap Ans✓✓✓ Testing requirements: it does not require "testing" as
the other devices. But it should be inspected to make sure it has not been
nullified with objects such as hoses or pipes.
Airgap Ans✓✓✓ 2x Supply line diameter but not less than 1".
Approved airgap seperation Ans✓✓✓ Backsiphonage, backpressure,
containment, and pollutant
questions with accurate answers
0.433 Ans✓✓✓ For every one foot of water you generate how much
PSI?
1 PSID Ans✓✓✓ Minimum standards for passing check valve
100 psi Ans✓✓✓ Maximumun pressure delivered to customers
14.7 PSI Ans✓✓✓ Atmospheric Pressure at sea level
2.31 feet Ans✓✓✓ 27 3/4 inches
2.31 ft Ans✓✓✓ 1.0 PSIG
20 psi Ans✓✓✓ Minimum system pressure
27 3/4 Ans✓✓✓ 2.31 feet of head
3 methods for testing check valves Ans✓✓✓ 1. Seating with
backpressure
2. Seating with flow
3. Differential (PSID)
,33.9 feet Ans✓✓✓ Only pertains to suction/vacuum. Absolute furthest
water can be pulled up a column under a complete and total
vacuum/siphonage
35 psi Ans✓✓✓ Minimum static pressure
4 preliminary steps to testing Ans✓✓✓ Notify, identify, inspect, or
observe.
4,3,2,1 Ans✓✓✓ Flush test cocks in this sequence
60 psi Ans✓✓✓ Average working pressure
62.4 Ans✓✓✓ (7.48 gal/ft3)(8.34lbs/gal)
7.48 gallons Ans✓✓✓ 1 ft3 of water
8.34 lbs Ans✓✓✓ 1 gallon of water
A valve designed to open in the direction of normal flow and close with
the reversal of flow. Ans✓✓✓ Check valve
, Actual Cross Connection Ans✓✓✓ Any arrangement of pipes, fittings,
that connects a potable water supply directly to a non-potable source at
all times.
Air Gap Ans✓✓✓ A physical seperation between the free flowing
discharge end of a potable water supply pipeline and the highest flood
level of an open or non-pressure receiving vessel.
Air Gap Ans✓✓✓ In plumbing, the unobstructed vertical distance
through the free atmosphere between the lowest opening from any pipe
or outlet supplying water to a tank, plumbing fixture, or other container,
and the overflow rim of that container
Air Gap Ans✓✓✓ Requires a minimum vertical air space 2 pipe
diameters above the flood rim.
Requires a minimum 1 in. Distance.
Air Gap Ans✓✓✓ Testing requirements: it does not require "testing" as
the other devices. But it should be inspected to make sure it has not been
nullified with objects such as hoses or pipes.
Airgap Ans✓✓✓ 2x Supply line diameter but not less than 1".
Approved airgap seperation Ans✓✓✓ Backsiphonage, backpressure,
containment, and pollutant
