P12412: UV Water Treatment Safety Valve
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House of Quality

House of Quality

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The House of Quality is a tool we used to correlate customer needs to engineering specs, see the effect of engineering specs on each other (Roof), and rank the importance of the engineering specs based on customer importance and correlation with customer needs. In the upper image (the roof), "-"s mean the two specs have an inverse effect on one another meaning increasing one has negative effects on the second and "+"s mean the two specs have a positive correlation to one another meaning increasing one spec aids the other. From this tool we see that 6 engineering specs standout as of high importance:
  1. preventing contaminated water from entering the tank
  2. serviceable with basic hand tools
  3. maintenance time to change the bulb
  4. time between failure occurrence and flow cut-off
  5. sensing power loss
  6. notify operator of failure

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