9289 Phase 1 - Unit 302 (Pipework Joints Activity 4)

At what temperature does copper melt?

• 1,083°C

• 660°C

• 1,536°C

• 2,200°C

Which of the following is a reason why stainless steel pipes are commonly used these days?

• They are heavier than copper pipes.

• They corrode easily.

• They do not corrode.

• They are only used for decorative purposes.

What is required in wet central heating systems that use low carbon steel to prevent pipework corrosion?

• Adding extra insulation

• Using thicker pipes

• Adding inhibitor in the system water

• Increasing water pressure

If a pipe has a thick wall, which grade of LCS does it most likely belong to?

• Light

• Medium

• Heavy

• None of the above

Which of the following is a characteristic of polybutylene pipes used in pipework?

• They are rigid and difficult to install.

• They have high temperature and pressure resistance.

• They are only suitable for transporting cold water.

• They have high noise transfer.

What does the image illustrate about the application of Cross linked Polyethylene (PEX)?

• PEX pipes are used for electrical wiring.

• PEX pipes are used in underfloor heating installations.

• PEX pipes are used for outdoor irrigation only.

• PEX pipes are used for gas supply lines.

Which of the following best describes the 16mm PE-RT Barrier pipe used in underfloor heating?

• A high-quality, multilayered pipe engineered for a wide range of applications with innovative design and superior performance.

• A single-layer metal pipe used only for outdoor plumbing.

• A flexible rubber hose designed for garden irrigation.

• A ceramic pipe used for decorative purposes.

What are common uses of unplasticised polyvinyl chloride (PVCu) in plumbing?

• Electrical wiring insulation

• Push fit and solvent welded waste pipes, guttering, and downpipes

• Window glazing

• Flooring tiles

Which of the following is NOT a common sanitary size for PVCu pipes as listed in the material?

• 110mm

• 50mm

• 25mm

• 40mm

Which type of pipe fitting is commonly made from unplasticised polyvinyl chloride (PVCu) for sanitary installations?

• Copper elbow

• Steel tee

• PVCu waste pipe fitting

• Brass union