ABYC Systems Certification Exam
Review Latest 2025/2026 Questions and
Correct Answers Graded A+|Assured
Success
175% - CORRECT ANSWER-At what what percentage of nominal working
pressure shall the relief valve be set?
No, typically these are too high (up to 400% of nominal pressure) - CORRECT
ANSWER-Is a standard household type relief valve acceptable for hot water
tanks?
,Polyethylene - CORRECT ANSWER-What is the most often used materials for
potable water systems?
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 - CORRECT ANSWER-Name 5 materials allowable for
contact use in potable water systems:
Siphon Break - CORRECT ANSWER-What device can be used to separate
potable water from other water systems?
Accumulator Tank, after pump/filter and before check-valve - CORRECT
ANSWER-What is the device used to maintain a stable pressure and minimize
pump cycling, and where should it be located?
nominal working pressure, not to exceed 80 PSI - CORRECT ANSWER-For the
pressure reducing valve and check valve installed after a shore water connection,
what is the maximum allowable pressure?
,overboard - CORRECT ANSWER-Where shall the storage tank be vented?
3 PSI or mnfg's maximum, which ever is greater. - CORRECT ANSWER-What is
the maximum allowable pressure to which the storage tank and vent system be
subjected?
-40 °F to +140 °F - CORRECT ANSWER-What temperate range is required for
pumps to be able to tolerate exposure?
257 F - CORRECT ANSWER-When operating at an ambient temperature of 140
F, what is the max allowable surface temperature of a pump?
True - CORRECT ANSWER-Potable water systems must be equipped with a
drain. T or F?
False - CORRECT ANSWER-Storage tank inlet may also serve as the tank vent. T
or F?
True - CORRECT ANSWER-Storage tank inlet caps must be retained to prevent
loss. T or F?
, True - CORRECT ANSWER-Storage tanks must be equipped with a vent. T or F?
True - CORRECT ANSWER-Storage tank vent may be used for filling purposes. T
or F?
At least 1.5X the pressure exerted by the distance from the tank bottom to the
deck fill plate or vent, but not less than 3 PSI. - CORRECT ANSWER-What rate
of static pressure must a storage tank withstand?
3 PSI - CORRECT ANSWER-What is the max pressure that a desalinator can
impart to a storage tank?
True - CORRECT ANSWER-Each desalinator must be equipped with an
automatic shutoff salinity detector. T or F?
"For Cold Water Use Only" - CORRECT ANSWER-What marking must be on
pipe or tubes that are not capable of handling hot water?
125 PSI, 300 PSI - CORRECT ANSWER-What is the test pressure for water
heater tank 15 gal or less? over 15 gal but under 120 gal?
Review Latest 2025/2026 Questions and
Correct Answers Graded A+|Assured
Success
175% - CORRECT ANSWER-At what what percentage of nominal working
pressure shall the relief valve be set?
No, typically these are too high (up to 400% of nominal pressure) - CORRECT
ANSWER-Is a standard household type relief valve acceptable for hot water
tanks?
,Polyethylene - CORRECT ANSWER-What is the most often used materials for
potable water systems?
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 - CORRECT ANSWER-Name 5 materials allowable for
contact use in potable water systems:
Siphon Break - CORRECT ANSWER-What device can be used to separate
potable water from other water systems?
Accumulator Tank, after pump/filter and before check-valve - CORRECT
ANSWER-What is the device used to maintain a stable pressure and minimize
pump cycling, and where should it be located?
nominal working pressure, not to exceed 80 PSI - CORRECT ANSWER-For the
pressure reducing valve and check valve installed after a shore water connection,
what is the maximum allowable pressure?
,overboard - CORRECT ANSWER-Where shall the storage tank be vented?
3 PSI or mnfg's maximum, which ever is greater. - CORRECT ANSWER-What is
the maximum allowable pressure to which the storage tank and vent system be
subjected?
-40 °F to +140 °F - CORRECT ANSWER-What temperate range is required for
pumps to be able to tolerate exposure?
257 F - CORRECT ANSWER-When operating at an ambient temperature of 140
F, what is the max allowable surface temperature of a pump?
True - CORRECT ANSWER-Potable water systems must be equipped with a
drain. T or F?
False - CORRECT ANSWER-Storage tank inlet may also serve as the tank vent. T
or F?
True - CORRECT ANSWER-Storage tank inlet caps must be retained to prevent
loss. T or F?
, True - CORRECT ANSWER-Storage tanks must be equipped with a vent. T or F?
True - CORRECT ANSWER-Storage tank vent may be used for filling purposes. T
or F?
At least 1.5X the pressure exerted by the distance from the tank bottom to the
deck fill plate or vent, but not less than 3 PSI. - CORRECT ANSWER-What rate
of static pressure must a storage tank withstand?
3 PSI - CORRECT ANSWER-What is the max pressure that a desalinator can
impart to a storage tank?
True - CORRECT ANSWER-Each desalinator must be equipped with an
automatic shutoff salinity detector. T or F?
"For Cold Water Use Only" - CORRECT ANSWER-What marking must be on
pipe or tubes that are not capable of handling hot water?
125 PSI, 300 PSI - CORRECT ANSWER-What is the test pressure for water
heater tank 15 gal or less? over 15 gal but under 120 gal?
