ABYC Systems Certification Exam Review Questions With Correct Answers!!

What is the most often used materials for potable water systems? - Answer-Polyethylene Name 5 materials allowable for contact use in potable water systems: - 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 What device can be used to separate potable water from other water systems? - Answer-Siphon Break What is the device used to maintain a stable pressure and minimize pump cycling, and where should it be located? - Answer-Accumulator Tank, after pump/filter and before check-valve At what what percentage of nominal working pressure shall the relief valve be set? - Answer-175% Is a standard household type relief valve acceptable for hot water tanks? - Answer-No, typically these are too high (up to 400% of nominal pressure) For the pressure reducing valve and check valve installed after a shore water connection, what is the maximum allowable pressure? - Answer-nominal working pressure, not to exceed 80 PSI Where shall the storage tank be vented? - Answer-overboard What is the maximum allowable pressure to which the storage tank and vent system be subjected? - Answer-3 PSI or mnfg's maximum, which ever is greater. What temperate range is required for pumps to be able to tolerate exposure? - Answer--40 °F to +140 °FWhen operating at an ambient temperature of 140 F, what is the max allowable surface temperature of a pump? - Answer-257 F Potable water systems must be equipped with a drain. T or F? - Answer-T