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Backflow Prevention Assembly Tester Training, Exams of Advanced Education

Cheyney University of PennsylvaniaAdvanced Education

Backflow Prevention Assembly Tester Training

Typology: Exams

2025/2026

Available from 02/11/2026

tizian-mwangi
tizian-mwangi 🇺🇸

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Backflow Prevention Assembly Tester
Training
1. What is the difference between CV 1 and CV 2 on a double CV
assembly: The
two CV operate the same
2. In a perfect
vacuum, water can be drawn up a column feet.: 33.9
3.
Which of the following is considered to be a chemical contaminant?:
Arsenic
4.
Which of the following is considered to be a biological health
hazard?:
Giardia
5.
What type of assembly has two internally spring- loaded CV,
two shut- off
valves, and four test cocks?: Double Check
6. Which of the following is the most suitable protection when directly
connect- ing potable water supply lines to sewerage systems or to
radioactive sources?-
pf3
pf4
pf5
pf8
pf9
pfa

Partial preview of the text

Download Backflow Prevention Assembly Tester Training and more Exams Advanced Education in PDF only on Docsity!

1 /

Backflow Prevention Assembly Tester

Training

  1. What is the difference between CV 1 and CV 2 on a double CV assembly: The two CV operate the same
  2. In a perfect vacuum, water can be drawn up a column feet.: 33.
  3. Which of the following is considered to be a chemical contaminant?: Arsenic
  4. Which of the following is considered to be a biological health hazard?: Giardia
  5. What type of assembly has two internally spring- loaded CV, two shut- off valves, and four test cocks?: Double Check
  6. Which of the following is the most suitable protection when directly connect- ing potable water supply lines to sewerage systems or to radioactive sources?-

2 / : Air Gap

  1. A Bypass of a Backflow prevention assembly may be permitted only if the assembly in the bypass:: Is the same type
  2. What Federal Law made water purveyors responsible for water quality all the way to the customers tap?: Safe Drinking Water Act Amendment of 1986
  3. If a column of water is exerting a pressure of 50 psi, how high must the water be inside the column?: 115.5ft
  4. As the velocity of water increases, pressure:: Decreases
  5. Atmospheric pressure at sea level is psi: 14.
  6. A water supply other than the purveyors approved supply that is available to a premise is called:: Auxiliary Water Supply
  7. When testing a DCDA the mainline and bypass assemblies should be a tested minimum of months.: 12
  8. How can backsiphonage action be broken: Air Gap
  9. What single difficult to regulate item is more commonly associated with cross connections, specifically through backsiphonage?: Garden Hose

4 / static pressure drop across CV 1 should be recorded. What other information should be recorded?: CV2 is leaking and shutott valve 2 is leaking

  1. At what point is the relief valve in a RP required to open?: 2.0psid
  2. What is the minimum spring tension recommended on CV1 in a RPZ?: 3 psi greater than the tension recommended on CV1 in a RPZ
  3. Which device protects against back pressure and backsiphonage?: Reduced pressure Backflow preventer
  4. While testing the air inlet valve on a spill proof vacuum breaker, the high side bleed needle valve may need to be opened more than 1/ turn in order to allow the air inlet to open? What is the likely cause?: Leaking shutott valve #
  5. According to USC, what is the correct height for installing a RPZ?: 12 inches above grade, but no more than 36inches
  6. What is the correct height to install a PVB?: 12inches above the highest downstream point
  7. What company or agency is responsible for testing and approving all Back- flow prevention assemblies in the US?: Foundation for Cross Connection Control & Hydraulic Research

5 /

  1. Backflow Prevention assemblies are often installed in parallel in order to:: - Maintain service during testing and repairs
  2. Which of the following is NOT a criterion for an approve assembly?: shipped by manufacturer in separate parts for inspection
  3. What is the minimum pressure drop across a spring loaded, soft- seated Check Valve?: 1.0psid
  4. When testing a double Check Valve assembly ,what is the correct order for closing the shutoff valves?: Shutott #2. Then Shutott #
  5. Which device protects against low hazards only?: Double Check
  6. Where is the relief valve on an RPZ located?: Between CV#1 and CV#
  7. An atmospheric vacuum breakers is designed to protect against?: Pollutants and Contaminants, but under backsiphonage only
  8. Why must the tester determine the opening point of the relief valve on a re- duced pressure Backflow preventer prior to testing back pressure on CV#2?: The operation of CV#2 cannot be determined if the relief valve is closed.
  9. Backflow prevention by contaminant means": Placing a Backflow

7 / under high velocity and may cause backsiphonage is referred to as the:: Venturi Ettect

  1. What is the purpose of the 3.0psi buffer in an RPZ when check valves in other assemblies require 1.0psi static pressure drop across them?: To permit the relief valve to discharge when the assembly is placed under back pressure conditions
  2. The best place to install a reduced pressure Backflow prevention device is:: In an accesible location above the grade
  3. When loosening the vent screw on a spill proof vacuum breaker, the tester observes the air inlet valve is open. What is the leaking?: Check Valve
  4. What protection is equivalent to or better than an RP?: Approved air gap separation
  5. Which check valve on a reduced pressure Backflow preventer should hold against backpressure?: Check Valve 2
  6. When should an RP device be tested?: At least annually After installation After repairs
  7. Why do you open then close the test kit low bleed valve

8 / before determining the pressure differential across an RP Check valve#1: Reestablish " Set Up Pressure"

  1. When testing a reduced pressure zone Backflow preventer, bleed valves should be opened in which order?: Low then High
  2. What type of gage is used to measure the pressure across check valves in RPs, DCs, and PVBs?: Ditterential
  3. When setting up an RP for testing you notice that the gage dropped to the low end of the scale and that the relief valve began discharging continuously when the #2 shutoff valve was closed. What is the probably cause: Leaking shutott #
  4. When testing a pressure vacuum breaker or spill proof vacuum breaker the gauge should be held at that height?: At the center the assembly
  5. If you observe the relief valve of an RPZ spitting water, what would be the suspected cause?: Line pressure fluctuating
  6. You approach an RP that is dripping. Your first move is to close the #2 shutoff valve at which time the relief valve stops dripping. What does this indicate?: leaking relief valve
  7. You approach an RP that is dripping and the customer is currently using the water. You close the #2 shutoff valve and the relief

10 /

  1. Static pressure means:: No Flow
  2. There is continuous discharge from the relief valve on a reduced pressure Backflow preventer. The static pressure drop across check valve #1 is 10.0psi. What is the most likely cause?: Debris fouling the relief valve seat
  3. According to USC, what is the correct height to install an atmospheric Vacu- um breaker?: 6 inches above the highest downstream point
  4. test kits should be verified for accuracy and calibrated how often?: At least once a year
  5. To determine the air inlet opening point on a PVB, the tester must open the:: high side bleed valve
  6. High side hose should be connected to:: TC #
  7. low side hose should be connected to:: TC#
  8. Bypass/vent hose should be connected to:: TC#