ABYC SYSTEMS CERTIFICATION EXAM |ACTUAL
QUESTIONS AND VERIFIED ANSWERS|BRAND NEW
2026-2027 UPDATE|GRADED A+
Question 1
What is the most often used materials for potable water systems?
CORRECT ANSWER
Polyethylene
Question 2
Name 5 materials allowable for contact use in potable water systems:
CORRECT ANSWER
1. Copper Alloys (incl. bronze, brass and nickel-copper)
2. AISI Type 300 series stainless steel
3. Glass-lined metal
4. FDA approved plastic
5. FDA approved rubber
Question 3
What device can be used to separate potable water from other water systems?
CORRECT ANSWER
Siphon Break
Question 4
1
@THE STUDY VAULT
,What is the device used to maintain a stable pressure and minimize pump cycling, and
where should it be located?
CORRECT ANSWER
Accumulator Tank, after pump/filter and before check-valve
Question 5
At what what percentage of nominal working pressure shall the relief valve be set?
CORRECT ANSWER
175%
Question 6
Is a standard household type relief valve acceptable for hot water tanks?
CORRECT ANSWER
No, typically these are too high (up to 400% of nominal pressure)
Question 7
For the pressure reducing valve and check valve installed after a shore water connection,
what is the maximum allowable pressure?
CORRECT ANSWER
nominal working pressure, not to exceed 80 PSI
Question 8
Where shall the storage tank be vented?
CORRECT ANSWER
2
@THE STUDY VAULT
,overboard
Question 9
What is the maximum allowable pressure to which the storage tank and vent system be
subjected?
CORRECT ANSWER
3 PSI or mnfg's maximum, which ever is greater.
Question 10
What temperate range is required for pumps to be able to tolerate exposure?
CORRECT ANSWER
-40 °F to +140 °F
Question 11
When operating at an ambient temperature of 140 F, what is the max allowable surface
temperature of a pump?
CORRECT ANSWER
257 F
Question 12
Potable water systems must be equipped with a drain. T or F?
CORRECT ANSWER
True
3
@THE STUDY VAULT
, Question 13
Storage tank inlet may also serve as the tank vent. T or F?
CORRECT ANSWER
False
Question 14
Storage tank inlet caps must be retained to prevent loss. T or F?
CORRECT ANSWER
True
Question 15
Storage tanks must be equipped with a vent. T or F?
CORRECT ANSWER
True
Question 16
Storage tank vent may be used for filling purposes. T or F?
CORRECT ANSWER
True
Question 17
What rate of static pressure must a storage tank withstand?
4
@THE STUDY VAULT
QUESTIONS AND VERIFIED ANSWERS|BRAND NEW
2026-2027 UPDATE|GRADED A+
Question 1
What is the most often used materials for potable water systems?
CORRECT ANSWER
Polyethylene
Question 2
Name 5 materials allowable for contact use in potable water systems:
CORRECT ANSWER
1. Copper Alloys (incl. bronze, brass and nickel-copper)
2. AISI Type 300 series stainless steel
3. Glass-lined metal
4. FDA approved plastic
5. FDA approved rubber
Question 3
What device can be used to separate potable water from other water systems?
CORRECT ANSWER
Siphon Break
Question 4
1
@THE STUDY VAULT
,What is the device used to maintain a stable pressure and minimize pump cycling, and
where should it be located?
CORRECT ANSWER
Accumulator Tank, after pump/filter and before check-valve
Question 5
At what what percentage of nominal working pressure shall the relief valve be set?
CORRECT ANSWER
175%
Question 6
Is a standard household type relief valve acceptable for hot water tanks?
CORRECT ANSWER
No, typically these are too high (up to 400% of nominal pressure)
Question 7
For the pressure reducing valve and check valve installed after a shore water connection,
what is the maximum allowable pressure?
CORRECT ANSWER
nominal working pressure, not to exceed 80 PSI
Question 8
Where shall the storage tank be vented?
CORRECT ANSWER
2
@THE STUDY VAULT
,overboard
Question 9
What is the maximum allowable pressure to which the storage tank and vent system be
subjected?
CORRECT ANSWER
3 PSI or mnfg's maximum, which ever is greater.
Question 10
What temperate range is required for pumps to be able to tolerate exposure?
CORRECT ANSWER
-40 °F to +140 °F
Question 11
When operating at an ambient temperature of 140 F, what is the max allowable surface
temperature of a pump?
CORRECT ANSWER
257 F
Question 12
Potable water systems must be equipped with a drain. T or F?
CORRECT ANSWER
True
3
@THE STUDY VAULT
, Question 13
Storage tank inlet may also serve as the tank vent. T or F?
CORRECT ANSWER
False
Question 14
Storage tank inlet caps must be retained to prevent loss. T or F?
CORRECT ANSWER
True
Question 15
Storage tanks must be equipped with a vent. T or F?
CORRECT ANSWER
True
Question 16
Storage tank vent may be used for filling purposes. T or F?
CORRECT ANSWER
True
Question 17
What rate of static pressure must a storage tank withstand?
4
@THE STUDY VAULT
