ABYC Systems Certification Exam Review – Study Guide and Practice Questions 1 of 52 2026-03-24
ABYC Systems
Certification Exam Review
– Study Guide and Practice
Questions
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ABYC Systems Certification Exam
Review Study Guide
Polyethylene - 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 - ANSWER ✔ Name 5 materials allowable for contact use in
potable water systems:
Siphon Break - ANSWER ✔ What device can be used to separate potable water from
other water systems?
Accumulator Tank, after pump/filter and before check-valve - ANSWER ✔ What is the
device used to maintain a stable pressure and minimize pump cycling, and where
should it be located?
Page 2 of 52 Page 2 ABYC Systems Certification Exam Review Study Guide.pdf
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175% - 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) - ANSWER ✔ Is a
standard household type relief valve acceptable for hot water tanks?
nominal working pressure, not to exceed 80 PSI - ANSWER ✔ For the pressure
reducing valve and check valve installed after a shore water connection, what is the
maximum allowable pressure?
overboard - ANSWER ✔ Where shall the storage tank be vented?
3 PSI or mnfg's maximum, which ever is greater. - ANSWER ✔ What is the maximum
allowable pressure to which the storage tank and vent system be subjected?
-40 °F to +140 °F - ANSWER ✔ What temperate range is required for pumps to be able
to tolerate exposure?
257 F - ANSWER ✔ When operating at an ambient temperature of 140 F, what is the
max allowable surface temperature of a pump?
True - ANSWER ✔ Potable water systems must be equipped with a drain. T or F?
Page 3 of 52 Page 3 ABYC Systems Certification Exam Review Study Guide.pdf
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False - ANSWER ✔ Storage tank inlet may also serve as the tank vent. T or F?
True - ANSWER ✔ Storage tank inlet caps must be retained to prevent loss. T or F?
True - ANSWER ✔ Storage tanks must be equipped with a vent. T or F?
True - 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. - ANSWER ✔ What rate of static pressure must a
storage tank withstand?
3 PSI - ANSWER ✔ What is the max pressure that a desalinator can impart to a storage
tank?
True - ANSWER ✔ Each desalinator must be equipped with an automatic shutoff
salinity detector. T or F?
"For Cold Water Use Only" - ANSWER ✔ What marking must be on pipe or tubes that
are not capable of handling hot water?
125 PSI, 300 PSI - ANSWER ✔ What is the test pressure for water heater tank 15 gal
or less? over 15 gal but under 120 gal?
Page 4 of 52 Page 4 ABYC Systems Certification Exam Review Study Guide.pdf
ABYC Systems
Certification Exam Review
– Study Guide and Practice
Questions
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,ABYC Systems Certification Exam Review Study Guide 2 of 52 2026-03-24
ABYC Systems Certification Exam
Review Study Guide
Polyethylene - 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 - ANSWER ✔ Name 5 materials allowable for contact use in
potable water systems:
Siphon Break - ANSWER ✔ What device can be used to separate potable water from
other water systems?
Accumulator Tank, after pump/filter and before check-valve - ANSWER ✔ What is the
device used to maintain a stable pressure and minimize pump cycling, and where
should it be located?
Page 2 of 52 Page 2 ABYC Systems Certification Exam Review Study Guide.pdf
,ABYC Systems Certification Exam Review Study Guide 3 of 52 2026-03-24
175% - 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) - ANSWER ✔ Is a
standard household type relief valve acceptable for hot water tanks?
nominal working pressure, not to exceed 80 PSI - ANSWER ✔ For the pressure
reducing valve and check valve installed after a shore water connection, what is the
maximum allowable pressure?
overboard - ANSWER ✔ Where shall the storage tank be vented?
3 PSI or mnfg's maximum, which ever is greater. - ANSWER ✔ What is the maximum
allowable pressure to which the storage tank and vent system be subjected?
-40 °F to +140 °F - ANSWER ✔ What temperate range is required for pumps to be able
to tolerate exposure?
257 F - ANSWER ✔ When operating at an ambient temperature of 140 F, what is the
max allowable surface temperature of a pump?
True - ANSWER ✔ Potable water systems must be equipped with a drain. T or F?
Page 3 of 52 Page 3 ABYC Systems Certification Exam Review Study Guide.pdf
, ABYC Systems Certification Exam Review Study Guide 4 of 52 2026-03-24
False - ANSWER ✔ Storage tank inlet may also serve as the tank vent. T or F?
True - ANSWER ✔ Storage tank inlet caps must be retained to prevent loss. T or F?
True - ANSWER ✔ Storage tanks must be equipped with a vent. T or F?
True - 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. - ANSWER ✔ What rate of static pressure must a
storage tank withstand?
3 PSI - ANSWER ✔ What is the max pressure that a desalinator can impart to a storage
tank?
True - ANSWER ✔ Each desalinator must be equipped with an automatic shutoff
salinity detector. T or F?
"For Cold Water Use Only" - ANSWER ✔ What marking must be on pipe or tubes that
are not capable of handling hot water?
125 PSI, 300 PSI - ANSWER ✔ What is the test pressure for water heater tank 15 gal
or less? over 15 gal but under 120 gal?
Page 4 of 52 Page 4 ABYC Systems Certification Exam Review Study Guide.pdf
