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Backflow Prevention and Cross Connection Control QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES 2025/2026 (VERIFIED ANSWERS) |ALREADY GRADED A+$12.99
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Backflow Prevention and Cross Connection Control QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES 2025/2026 (VERIFIED ANSWERS) |ALREADY GRADED A+
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BACKFLOW PREVENTION
Institution
BACKFLOW PREVENTION
Backflow Prevention and Cross Connection Control QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES 2025/2026 (VERIFIED ANSWERS) |ALREADY GRADED A+
1. During DC Test for both take a look at valve, the Check valve is analyzing below 1.Zero
psid. What does this suggest? - ANS-1. Dirty or broken check disc
2. 2. Dirty or damaged take a look at seat
3. three. Damaged spring
4. During DC Test for either take a look at valve, the Check valve reading above 5.Zero
psid psid. What does this indicate? - ANS-1. Incorrect CV spring, feasible RP spring.
5. During PVB Air Inlet Test, Air inlet valve does not open, and studying on subject test
package will now not drop. What does this imply? - ANS-1. Leaky No. 1 shutoff valve
6. 2. Parallel set up with leaky No. 2 shutoff valve
7. During PVB Air Inlet Test, Air inlet valve does not open, as area take a look at package
drops to 0.Zero psid. What does this imply? - ANS-1. Air inlet disc caught to seat
8. 2. Broken or missing air inlet spring
9. 3d fashion" stress vacuum breaker (non- loaded air inlet valve)
10. 4. It is an SVB (See Book nine.5)
11. During PVB Air Inlet Test, Air inlet valve opens underneath 1.Zero psid, and analyzing on
area test package will not drop. What does this indicate? - ANS-1. Dirty or damaged air
inlet valve disc
12. 2. Scale buildup on seat
13. 3. Damaged spring
14. During PVB Check Valve Closing Point Test (Test No. 2), water runs constantly from take
a look at cock No. 2. What does this imply? - ANS-1. Leaky No. 1 shutoff valve
15. During PVB Check Valve Test, Check valve studying beneath 1.Zero psid. What does
this indicate? - ANS-1. Dirty or broken test valve disc
16. 2. Dirty or broken seat
17. 3. Damaged spring
18. During RP Test 1 or three, Check Valve No. 1 take a look at reading too low (less than
five.Zero). What does this suggest? - ANS-1. Dirty or damaged disc
19. 2. Dirty or damaged seat
20. three. Guide individuals hanging up
21. 4. Damaged spring
22. During RP Test 1, Relief Valve discharges after No. 2 shutoff valve is closed. What does
this indicate? - ANS-1. Normally shows defective No. 1 take a look at valve
23. • Dirty or broken disc
24. • Dirty or broken seat: or,
25. 2. Leak thru comfort valve diaphragm
, 26. During RP Test 1, Relief valve opens too high (with sufficiently high No. 1 check
reading). What does this imply? - ANS-1. Faulty relief valve
27. • Dirty or damaged disc
28. • Dirty or broken seat
29. During RP Test 1, Relief valve could now not open, differential drops to 0. What does this
indicate? - ANS-1. Relief valve caught closed because of corrosion or scale (RVSC).
30. 2. Relief valve sensing line(s) plugged.
31. During RP Test 1, Relief valve might now not open; differential on the field take a look at
kit might not drop. What does this imply? - ANS-1. Leaky No. 2 shutoff valve with glide
through the meeting (L2SVwF)
32. During RP Test 2, Check Valve No. 2 is Leaking. What does this suggest? - ANS-1. Dirty
or damaged CV 2 disc
33. 2. Dirty or damaged CV 2 seat
34. three. CV2 guide participants putting up
35. NOTE: Lubricants should handiest be used to help with the reassembly of components,
and ought to be non-poisonous.
36. During SVB (Air Inlet Opening Point) Test 2, water runs continuously from vent screw
valve. What does this imply? - ANS-1. Leaking No. 1 shutoff valve
37. During SVB (Check Valve Closing Point) Test 1, Check valve analyzing beneath 1.0 psid.
What does this imply? - ANS-1. Dirty or damaged test disc
38. 2. Damaged seat
39. 3. Leaking diaphragm/seal
40. During SVB (Either) Test, Air inlet opens underneath 1.Zero psid. What does this imply?
- ANS-1. Dirty or damaged air inlet disc
41. During SVB (Either) Test, Air inlet valve does not open, and analyzing on field test
package will no longer drop. What does this imply? - ANS-1. Leaky No. 1 shutoff valve
42. During SVB (Either) Test, air inlet valve does now not open, as subject test kit drops to
0.Zero psid. What does this suggest? - ANS-1. Air inlet disc caught to seat
43. 2. Broken or missing air inlet spring
44. three. Parallel installation with leaky No.2 shutoff valve
45. four. PVB no longer SVB
46. Relief valve discharges continuously. Problem May be resulting from what 5 faults? -
ANS-1. Faulty No. 1 check valve (F1CV)
47. 2. Faulty No. 2 check valve with backpressure (F2CVwB)
48. three. Faulty comfort valve (FRV)
49. 4ine(s) (RVPSL)
50. five. Relief Valve leaking diaphragm (RVLD)
51. Relief valve discharges intermittently. Problem May be resulting from what four faults? -
ANS-1. Properly operating meeting with massive stress fluctuations
52. 2. No.1 take a look at valve reading is near RV beginning factor, with small line pressure
fluctuation.
53. 3. Water hammer
54. four. No. 1 check valve leak with intermittent drift via meeting.
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