10.4 Quiz – Flushometers

  1. What are the three types of flush valves used with urinals and water closets?
  2. What is the minimum size of supply line required serving a urinal metering flush valve?
  3. What is the minimum size supply pipe for a diaphragm flush valve serving a urinal?
  4. What is the minimum size supply pipe for a piston flush valve serving a water closet?
  5. What is the minimum water supply pressure for piston or diaphragm flush valve serving a water closet?
  6. What is the maximum water pressure that may be supplied to a flush valve?
  7. What is the minimum size of the outlet tube from a flush valve serving a wash- down urinal?
  8. What is the minimum size of the outlet tube from a flush valve serving a water closet with a top connection?
  9. What is the most likely cause if a diaphragm flush valve flushes too long or fails to shut off?
  10. What is the most likely cause if a piston flush valve flushes too long or fails to shut off?
  11. What are the two ways that electronic flush valves can be powered?
  12. Where is the vacuum breaker located on a water closet flush valve?
  13. Referring to the Zurn AquaVantage AV ZH Series sheets in the course pack model ZH6000AV, what is the recommended height of the water supply above the water closet rim?
  14. Referring to the Zurn AquaVantage AV ZH Series sheets in the course pack model ZH6000AV, what is the minimum and maximum recommended distances of the water supply from the centre of the water closet?
  15. Referring to the Zurn AquaVantage AV ZH Series sheets in the course pack model ZH6000AV, what is the minimum and maximum recommended distances of the flushometer spud from the wall for a sensor type valve?

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