Plumbing level 2 - PP4 - Cold water

What is the primary purpose of insulation?

• To make materials flammable

• To allow moisture to pass through

• To increase the transmission of heat

• To prevent the transmission of heat

Which of the following is NOT a characteristic of good insulating material?

• It should be flammable

• It should be vermin proof

• It should be draught proof

• It should be impervious to moisture

Which material is NOT approved for use in pipework according to the text?

• Stainless

• Lead

• Plastic

• Copper

What fluid category represents a severe/serious health risk?

• Category 3

• Category 5

• Category 4

• Category 1

What is back syphonage?

• When water is drawn back out of an appliance due to negative pressure

• When water is filtered

• When water flows in the designed direction

• When water is heated

What type of valve must be installed to protect category 1 water from category 2 water?

• No valve is needed

• Single check valve

• Double check valve

• RPZ valve

In which situation is an RPZ valve required?

• Protecting category 1 water from category 3 water

• Protecting category 1 water from category 5 water

• Protecting category 1 water from category 2 water

• Protecting category 1 water from category 4 water

What is the AUK1 air gap?

• The height from the warning pipe to the FOV outlet

• The height from the WC pan spillover to the cistern spillover

• The distance between the outlet of a tap and the spillover level on a sink

• The distance between the outlet of the tap and the spillover level of a bath

What is the purpose of a shower rail with a rubber restrainer for the hose?

• To increase water pressure

• To prevent the hose from being submerged in bathwater

• To filter the water

• To reduce water temperature

Which regulation covers protecting pipework from freezing and undue heat?

• BS9101

• BS1234

• BS5678

• BS6700