Fluid Categories and back flow prevention

What is backflow?

• Water flowing in the wrong direction

• Water flowing faster

• Water flowing slower

• Water flowing in a circle

What is an example of a risk for fluid category 2?

• Hot water system

• Kitchen sink

• Combination boilers

• Washing machines

Which fluid category represents a serious health hazard?

• 5

• 1

• 3

• 2

What is an example of a risk for fluid category 3?

• Washing machines

• Hot water system

• Combination boilers

• Kitchen sink

What does fluid category 4 represent?

• Significant health hazard

• Wholesome water

• Slight health hazard

• Aesthetic quality impaired

What is an air gap used for?

• To protect the cold water supply

• To heat the water

• To increase water pressure

• To change water color

What does a check valve do?

• Allows water to flow in one direction

• Stops water flow completely

• Increases water temperature

• Changes water color

How many valve orifices does a single check valve have?

• One

• Two

• Three

• Four

What type of valve is used for mains fed shower mixer valves?

• Single check valve

• Double check valve

• No valve

• Triple check valve

Which type of valve is typically used to prevent backflow in a plumbing system?

• Ball valve

• Gate valve

• Check valve

• Butterfly valve