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WorksheetsCold water level two 2
Total questions: 16
Worksheet time: 8mins
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
Solder used for copper tube and fittings on potable water supplies must be ?
A. Lead free solder
B. Tin free solder
C. Silver free solder
D. Copper free solder
Which copper tube cannot be bent in a bending machine ?
A. Table X
B. Table Y
C. Table Z
D. Table B
When cutting notches through timber joists to run pipe-work the maximum depth of the hole should be ?
A. 1/2 the depth of the joist
B. 1/4 the depth of the joist
C. 1/8 the depth of the joist
D. 1/6 the depth of the joist
The pressure from the bath shower taps in a bungalow is very low when the shower is used. What would be the best solution ?
A. Increase the hot & cold pipe sizes
B. Raise the storage cistern
C. Lower the storage cistern
D. Fit pressure boosting valves
Copper cold water services fitted under suspended wooden floors must be ?
A. Insulated
B. Plastic coated
C. Clipped every 500mm
D. Cannot be fitted under suspended floors
Copper cold water services fitted under a bath (sited on the outside wall of a house) should be fitted ?
A. At the back of the bath
B. Anywhere
C. Under the centre of the bath
D. At the front of the bath
