Common Plumbing Processes: 1

Copper bought in half hard straight lengths is:

• a.    R220

• a.    R290

• a.    R250

• a.    R230.

What grade of LSC is commonly used on central heating systems?

• a.    Heavy

• a.    Medium

• a.    Light

• a.    Rough.

What colour identifies heavy grade LCS?

• a.    Blue

• a.    Green

• a.    Brown.

• a.    Red

What item is commonly used to securely clip LCS in place?

• a.    Push fit clip

• a.    Plastic saddle clip

• a.    Munson ring

• a.    Fusion ring.

Which plastic is commonly used for underground mains?

• a.    PVCu

• a.    HDPE

• a.    Polybutylene

• a.    MDPE.

When using push fit fittings on polybutylene, what additional item is required?

• a.    Internal pipe sleeve

• a.    External pipe clip

• a.    Extra O ring for high pressure situations

• a.    Jointing compound.

When soldering a joint on a rising mains, which one of the following must be used:

• a.    Leaded solder

• a.    Hemp and paste

• a.    O ring

• a.    Lead-free solder.

To keep the household and plumber safe from accidental electric shock, all exposed metal pipework should be:

• a.    Temporary continuity bonded

• a.    Equipotentially bonded

• a.    Insulated

• Labelled

On a manipulative Type B compression fitting, what additional tool is required?

• a.    Circlip pliers

• a.    Club hammer

• a.    Swagging tool

• a.    Hydraulic clamping tool.

1.        Which one of the following would require the application of flux?

• a.    Soldering two pieces of copper pipe together using end feed capillary fittings

• a.    Threading steel pipe

• a.    Jointing steel pipework

• a.    Jointing two pieces of copper pipe together using press fit fittings.