Cold water level two 2

Which of the following valves has the type of gland packing box that may need to be repacked after a long period or regular use ?

• A. Spherical plug type drain off valve

• B. Double check valve

• C. Float operated valve

• D. Stop valve

The warning pipe from a cold water storage cistern must be fitted ?

• A. Lower than the float valve

• B. Higher than the float valve

• C. On the opposite side of the cistern

  to the float valve

• D. Level with the float valve

The warning pipe from a Domestic Cold Water Storage Cistern must be terminated ?

• A. A warning pipe is not required

• B. Outside the building

• C. Inside the building

• D. Over the heating cold feed and

  expansion cistern

A plastic Domestic Cold Water Storage Cistern should be ?

• A. Supported with batons under the base

• B. Supported over the entire area of the

  base with hardboard

• C. Supported over the entire area of the

  base with chipboard

• D. Supported over the entire area of the

  base with floor boarding or ply

A plastic Domestic Cold Water Storage Cistern should ?

• A. Be fitted with an airtight lid

• B. Only needs a lid if in a dirty location

• C. Be fitted with a tight fitting lid with a

  screened vent

• D. Be fitted with a loose fitting lid

The New Water Regulations require that an isolation valve to a domestic cold water supply pipe from a storage cistern should be fitted ?

• A. As near to the cistern outlet as possible

• B. A valve is not required

• C. In the airing cupboard

• D. In the most convenient position if fitted

In which of the following section of pipe-work is water hammer likely to happen ?

• A. Cold feed to storage cistern in loft

• B. Cold feed to sink tap

• C. Hot supply to sink tap

• D. Underground cold water supply pipe

15mm Horizontal Copper tube should be clipped at minimum intervals of ?

• A. 750mm

• B. 1800mm

• C. 600mm

• D. 1200mm

It is important that flux should be removed from copper tube after the joints have been soldered to help prevent ?

• A. Water looking bad

• B. Minor staining of the tube

• C. Corrosion of the copper tube

• D. Odour in the water

Flux is used to solder copper tube and fittings, which of the following statements is false?

• A. Flux helps solder to flow

• B. Flux helps prevent re-oxidisation

  of the copper tube and fitting

• C. Flux helps clean the joint

• D. Flux helps lower the temperature

  that the solder melts at