Plumbing Mastery Challenge: Can You Diagnose, Fix, and Prevent Common Issues?7. What does a "shutoff valve" do in a plumbing system?23%Next Correct Incorrect Shutoff valves isolate water flow for repairs. 7. What does a "shutoff valve" do in a plumbing system? Controls water temperature Filters impurities Stops water flow to a fixture Measures water pressure 23%
