Cold Water | LO6

The tool shown here would be used for:

• Tightening tap connectors

• Reseating taps

• Re-packing glands

• Un-jamming the taps

A tap which has a drip coming from the body of the tap could be an indication that:

• The tap needs reseating

• The tap cartridge washer is worn

• The fibre/rubber washer is damaged

• Limescale has damaged the tap

A tap which has a drip coming from the head of the tap could be an indication that:

• The tap needs reseating

• The tap cartridge washer is worn

• The fibre/rubber washer is damaged

• The tap needs re-packing

The term "letting by" is caused due to water passing through even when shut off. Which of the following is not a reason for "letting by"?

• Tap washer damaged and dripping

• Tap flowing when opened fully

• FOV warning pipe is dripping

• Gate valve unable to close due to debris

The type of tap cartridge shown here is:

• Rising spindle

• Non-rising spindle

• Ceramic disc quarter turn

​ (a)   :surges of pressure in a high pressure system, causing a knocking noise.

​ (b)   :surges of pressure in a high pressure system, causing an FOV to open and close quickly.

• Water hammer
• Water murmur

Air locks will be caused due to high spots in the pipework and allows air to block off water, this is an occurrence in which type of systems?

• Low pressure systems

• High pressure systems

• Fully pumped systems

• Unvented systems

The tool shown here is used to check:

• Pressure

• Flow rate

• Limescale levels

• Chlorine levels

__________ :Used on larger/commercial systems so that pre-arranged maintenance schedules can be planned

• Planned preventative maintenance

• System pressure relief

• Chlorination of the systems

• Decommissioning a system