Common plumbing processes

The 'Formers' in the image of a bending machine are shown at what point?

• A

• B

• C

• D

What type of copper pipe is normally used for above ground 22mm cold water supply pipe?

• R220 Soft coils

• R250 Half hard lengths

• R290 Half hard lengths

• R290 Hard lengths

Polyethylene underground cold water service pipework is currently colour coded:

• Yellow

• Blue

• Black

• Green

The content of carbon in steel pipework used in domestic installations is?

• Low

• Medium

• High

• Very high

Which of the following correctly identifies the tool shown in the image?

• Internal bending spring

• Microbore scissor bender

• Hydraulic bending machine

• Tripod bending machine

Which of the following correctly identifies the type of fitting shown in the image?

• Coupling

• Elbow

• Stop end

• Tee

When calculating pipe lengths, the 'X' dimension is considered to be which of the following?

• The distance from face to face of the fitting

• The distance from pipe stops to centre of fitting

• The distance from centre to centre of fitting

• The distance from face to face of the fitting plus the pipe length

When bending copper pipe the spring bending method, what is the purpose of 'over bending' ?

• To ensure that the pipe is bend to exactly the correct angle

• To prevent 'ripples' from forming on the bend

• To prevent the pipe being 'throated'

• To aid in the release of the spring

Which one of the following correctly identifies the type of bend shown in the image?

• 90 Degree bend

• Double offset

• Single offset

• Passover bend

Which one of the following forms the main seal in a press-fit fitting?

• A Rubber O-Ring

• A compression olive

• A brass O-Ring

• A Tapered thread