Cold water systems - Noise faults

What is a common cause of most noises within a cold water system?

• High pressure and flow rates

• Faulty electrical wiring

• Low pressure and flow rates

• Improper installation of appliances

What tends to be the noise when a tap with a split or worn washer is opened?

• Complete silence

• A loud bang

• A humming or squealing noise

• A gurgling sound

What is the usual solution for a faulty tap washer causing noise?

• Replacing the entire tap

• Fitting a new washer

• Ignoring the noise

• Tightening the tap

What can cause a very loud hum throughout the pipework, especially if the cistern is in a roof space?

• Loose pipework

• A blocked pipe

• High water pressure

• Faulty float-operated valve washer

What is referred to as 'water hammer'?

• The sound of a dripping tap

• The sound of water boiling in pipes

• A violent banging within the system caused by loose or incorrectly supported pipework

• A tool used by plumbers

What effect does air trapped in the radiators have on a heating system?

• Increases the efficiency of the heating system

• Causes uneven heating and noise

• Reduces the need for maintenance

• Has no effect on the system

How can you prevent 'water hammer' in your plumbing system?

• By tightening all the taps in the house

• Installing water-softening units

• Securing loose pipework and installing shock arrestors

• Increasing the water pressure

How can you reduce high water pressure in your home's plumbing system?

• By installing a pressure reducing valve

• Securing loose pipework

• Replacing all the taps

• Increasing the size of the pipes

Why is it important to bleed radiators in a central heating system?

• To introduce more air into the system

• To remove air bubbles that can cause blockages and inefficiency

• To increase the water pressure within the system

• To test the strength of the radiators

What role does a float-operated valve play in a cistern or toilet tank?

• To regulate the temperature of the water

• To change the color of the water for aesthetic purposes

• To prevent the tank from overflowing by controlling the water level

• To increase the flushing power of the toilet