knowledge check 2

According to water regulations, what must every property have just inside the building?

• Water meter

• Isolation valve

• Pressure regulator

• Drain valve

What is the main function of the isolation valve in a property?

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Where is the isolation valve commonly located in a property?

• In the attic

• Near the front door

• Where the incoming mains enters the property, sometimes near to or under the kitchen sink

• In the bathroom

What is the name of the valve shown, commonly used for the incoming mains in cold water systems?

• Isolation valve

• Gate valve

• Ball valve

• Check valve

What is a direct cold water system?

• A system where cold water taps are fed from a storage tank

• A system where all cold water taps are directly fed under mains pressure and there is no stored water for the cold water system

• A system that uses hot water only

• A system that uses rainwater

In a direct cold water system, all the cold water taps in the property are directly fed under _______ pressure and there is no stored water for the cold water system.

• mains

• low

• tank

• gravity

A direct cold water system is a common high-pressure system used in the United Kingdom that supplies drinking water to every outlet.

• True

• False

Refer to the diagram of the direct cold water system. What is the function of the isolation valve?

• The isolation valve is used to stop the flow of water in the system for maintenance or repair.

• The isolation valve increases the water pressure in the system.

• The isolation valve filters impurities from the water supply.

• The isolation valve is used to heat the water before distribution.

What happens if the isolation valve is open in a direct cold water system?

• The water is stopped from feeding any connected appliance.

• The water is allowed to feed any connected appliance.

• The water is only allowed to feed the ground floor appliance.

• The water is only allowed to feed the loft area appliance.

Identify the area in the diagram where the cold water storage tank is located.

• Loft area

• Kitchen

• Garage

• Bathroom