L3 AP Cold water P2

These type of filters work under pressure to remove most of the dissolved mineral content by passing the water through a very fine membrane

• Activated carbon filter 

• Ion exchange 

• Sediment filter 

• Reverse osmosis 

Used to reduce limescale formation and other metal-ion contaminants such as lead. It takes the form of tiny granules that work by replacing the mineral or contaminant ions with hydrogen ions

• Activated carbon filter 

• Ion exchange 

• Sediment filter 

• Reverse osmosis 

Used to reduce taste and odour such as chlorine. The carbon filter has a large surface area that attracts and absorbs organic substances from the water. The carbon is usually in powder, granular or block form

• Activated carbon filter 

• Ion exchange 

• Sediment filter 

• Reverse osmosis 

A cold water system were all the outlets are from the mains is know as?

• Direct

• Indirect

• Basic

• One pipe

A cold water system were most of the outlets are from a cold water cistern is know as?

• Direct

• Indirect

• Basic

• One pipe

On a indirect system, what outlet MUST be directly of the mains?

• Basin

• Wc

• Shower

• Sink

The min size for a water main is?

• 15 mm

• 22 mm

• 28 mm

• 10 mm

Due to a greater demand on the cistern, as compared to a direct system, the indirect storage system requires a cold water storage cistern for cold only with a minimum capacity of?

• 150 Litres

• 200 Litres

• 230 Litres

• 300 Litres

Fluid category 1 represents:

• A serious health risk

• A significant health risk

• A slight health risk

• No health risk

Which one of the following back flow

prevention devices must be

installed on a supply to a hose union bib tap, according to the Water Regulations?

• AUK 2 air gap

• Single check valve

• Fullway gate vale

• A double check valve