ABYC Systems Certification Exam Review Verified Exam Questions
and Answers Latest update 2026/2027
Question:
Polyethylene
Answer:
What is the most often used materials for potable water systems?
Question:
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
Question:
Siphon Break
Answer:
What device can be used to separate potable water from other water systems?
Question:
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?
Question:
175%
Answer:
At what what percentage of nominal working pressure shall the relief valve be set?
Question:
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?
,Question:
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?
Question:
overboard
Answer:
Where shall the storage tank be vented?
Question:
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?
Question:
40 °F to +140 °F
Answer:
What temperate range is required for pumps to be able to tolerate exposure?
Question:
257 F
Answer:
When operating at an ambient temperature of 140 F, what is the max allowable surface temperature of
a pump?
Question:
True
Answer:
Potable water systems must be equipped with a drain. T or F?
Question:
False
Answer:
Storage tank inlet may also serve as the tank vent. T or F?
,Question:
True
Answer:
Storage tank inlet caps must be retained to prevent loss. T or F?
Question:
True
Answer:
Storage tanks must be equipped with a vent. T or F?
Question:
True
Answer:
Storage tank vent may be used for filling purposes. T or F?
Question:
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?
Question:
3 PSI
Answer:
What is the max pressure that a desalinator can impart to a storage tank?
Question:
True
Answer:
Each desalinator must be equipped with an automatic shutoff salinity detector. T or F?
Question:
"For Cold Water Use Only"
Answer:
What marking must be on pipe or tubes that are not capable of handling hot water?
, Question:
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?
Question:
175 PSI
Answer:
What is the max pressure relief valve setting for hot water tanks?
Question:
210 F
Answer:
What is the max temperature relief setting for hot water tanks?
Question:
125 F
Answer:
What is the max allowable water output temperature for hot water system?
Question:
True
Answer:
All potable water system connections shall be positioned above the normal bilge water accumulation
level. T or F?
Question:
True
Answer:
Exposed metallic parts of a potable water system shall have provisions for electrical bonding. T or F?
Question:
Improper venting
Answer:
For what reason might a holding tank collapse during pump-out?
and Answers Latest update 2026/2027
Question:
Polyethylene
Answer:
What is the most often used materials for potable water systems?
Question:
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
Question:
Siphon Break
Answer:
What device can be used to separate potable water from other water systems?
Question:
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?
Question:
175%
Answer:
At what what percentage of nominal working pressure shall the relief valve be set?
Question:
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?
,Question:
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?
Question:
overboard
Answer:
Where shall the storage tank be vented?
Question:
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?
Question:
40 °F to +140 °F
Answer:
What temperate range is required for pumps to be able to tolerate exposure?
Question:
257 F
Answer:
When operating at an ambient temperature of 140 F, what is the max allowable surface temperature of
a pump?
Question:
True
Answer:
Potable water systems must be equipped with a drain. T or F?
Question:
False
Answer:
Storage tank inlet may also serve as the tank vent. T or F?
,Question:
True
Answer:
Storage tank inlet caps must be retained to prevent loss. T or F?
Question:
True
Answer:
Storage tanks must be equipped with a vent. T or F?
Question:
True
Answer:
Storage tank vent may be used for filling purposes. T or F?
Question:
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?
Question:
3 PSI
Answer:
What is the max pressure that a desalinator can impart to a storage tank?
Question:
True
Answer:
Each desalinator must be equipped with an automatic shutoff salinity detector. T or F?
Question:
"For Cold Water Use Only"
Answer:
What marking must be on pipe or tubes that are not capable of handling hot water?
, Question:
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?
Question:
175 PSI
Answer:
What is the max pressure relief valve setting for hot water tanks?
Question:
210 F
Answer:
What is the max temperature relief setting for hot water tanks?
Question:
125 F
Answer:
What is the max allowable water output temperature for hot water system?
Question:
True
Answer:
All potable water system connections shall be positioned above the normal bilge water accumulation
level. T or F?
Question:
True
Answer:
Exposed metallic parts of a potable water system shall have provisions for electrical bonding. T or F?
Question:
Improper venting
Answer:
For what reason might a holding tank collapse during pump-out?
