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Backflow Prevention Practice Exam QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES 2025/2026 (VERIFIED ANSWERS) |ALREADY GRADED A+$12.99
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A backflow preventer creates a closed plumbing gadget that calls for the installation of a(n)
_____?
A. Expansion tank
B. Globe valve
C. Pressure lowering valve
D. Temperature and pressure alleviation valve
E. Utility box key - ANS-Expansion tank
A barometric loop should be mounted 35 toes (10.7 m) above the best ____?
A. Boiler
B. Fixture outlet
C. Gate valve
D. Service connection
E. Water meter - ANS-Fixture outlet
A test valve subject check suggested price of 0.8 psid (five.5 kPa) shows _____?
A. A passing test valve
B. A broken or failed spring
C. Debris within the check seat
D. Disc softening or decay
E. Low water pressure - ANS-Disc softening or decay
A not unusual backflow preventer on a double-wall warmness exchanger with leak detection is
____?
A. An air-gap separation
B. An atmospheric vacuum breaker
C. A double test valve meeting
D. A reduced pressure precept meeting
E. Nothing - ANS-Nothing
A go-connection may be a permanent piping arrangement or a(n) ____?
A. Backflow preventer
B. Church symbol
C. OSHA unsafe place designation
D. Railroad and toll road intersection signal
E. Temporary hose bibb connection - ANS-Temporary hose bibb connection
A deck-established atmospheric vacuum breaker's crucial installation stage is above the hole
utilization by ___?
A. 1 in. (2.Five cm)
B. Three in. (7.6 cm)
C. 6 in. (15 cm)
D. 12 in. (30 cm)
E. 18 in. (46 cm) - ANS-1 in. (2.5 cm)
, A differential stress gauge analyzing of zero.2 psid is represented on water column sight tube by
_____?
A. 1/16 in. (zero.Sixteen cm)
B. 1/2 in. (1.3 cm)
C. 2 in. (five.1 cm)
D. 3.5 in. (8.Nine cm)
E. Five.5 in. (14 cm) - ANS-5.Five in. (14 cm)
A direct go-connection suggests the piping machine may be subjected to ____?
A. Backpressure or backsiphonage
B. Backsiphonage best
C. Periodic inspection
D. Sustained pressure
E. Toxic materials - ANS-Backpressure or backsiphonage
A double test valve assembly set up in a vertical go with the flow down orientation is most
effective allowed ______?
A. In a basement or vault
B. If the meeting changed into tested and authorized as such
C. If the take a look at weight does not compress the spring
D. On fireplace-suppression structures
E. On water supply service connections - ANS-If the assembly become tested and accredited as
such
A double test valve meeting is hooked up 12 in. (30.5 cm) above the floor for _____?
A. Electrical code compliance
B. Floor draining
C. Maintenance
D. Mechanical code compliance
E. Rodent manipulate - ANS-Maintenance
A field take a look at report for a double check valve assembly will consist of the manufacturer's
name, model, size, and _____?
A. Body material
B. Date of manufacture
C. Serial number
D. Working pressure (maximum)
E. Working temperature (most) - ANS-Serial number
A hearth sprinkler gadget's backflow safety for a black-iron pipe machine is normally ____?
A. An air-hole separation
B. A double take a look at valve assembly
C. A decreased stress principle assembly
D. A decreased pressure detector assembly
E. No protection required - ANS-A double test valve meeting
A hose connection vacuum breaker's renovation consists of _____?
A. Check disc substitute
B. Diaphragm alternative
C. Draining for winterization
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