Module 2 Copper Pipe

Question 1

Copper tubing is supplied in three different ways what are they??

Answer 1

Light gauge tubing, kuterlon copper tubing, outside diameter copper tubing,

Question 2

Where would u use light gauge tubing??

Answer 2

It is suitable for All above ground hot and cold water services and central heating pipe work, it’s is supplied in half hard temper in 6m lengths

Question 3

What does half hard temper mean?

Answer 3

That it normally has to be annealed before bending by spring

Question 4

How is light gauge normally jointed?

Answer 4

By non manipulative compression fittings, capillary soldering fittings , and bronze welding

Question 5

Where is kuterlon copper tubing suitable for?

Answer 5

Underground main seater pipe work applications it’s dead soft temper so is ver easily bent into shape by hand, and is jointed by means of manipulative compression joints

Question 6

Where is outside diameter copper tubing used?

Answer 6

Suitable for micro mini and central heating applications jointed by means of non manipulative compression fitting and capillary soldering joints

Question 7

How are copper pipes joined?

Answer 7

Compression capillary or bronze welding joints

Question 8

Compression joints fall into 2 distinctive groups what are they??

Answer 8

Non manipulative fittings and manipulative fittings

Question 9

What are advantages of using cold jointing technique?

Answer 9

No hot works permit is needed, no fumes are produced and no fluxes are present to promote corrosion within the system

Question 10

What is the disadvantage of cold jointing technique?

Answer 10

The initial cost of crimping tools and the extra cost of the press fittings

Question 11

Copper properties?

Answer 11

Copper is a mineral and an element essential to every day life

Question 12

What is laminar flow??

Answer 12

It’s the smooth flow of water in a pipeline

Question 13

Talk about bronze welding??

Answer 13

Although it is referred to as welding no melting or fusion of the parent metal takes place

Question 14

What is used when bronze welding?

Answer 14

Icy acetylene equipment is most satisfactory for this as it’s able to produce an intensely hot flame that gives controlled local heating

Question 15

What type of rod is used when bronze welding?

Answer 15

A special brass rod is used to make the joint, it’s necessary to add flux to the joint enable the rod to adhere to the copper and to prevent oxidation

Question 16

What is capillary attraction?

Answer 16

When liquid sucks up between two surfaces

Question 17

What is flux?

Answer 17

It’s a liquid or a powder or solid material used for welding and soldering its purpose is to remove and then exclude oxides from the joint,

Question 18

What are the types of soldering?

Answer 18

Soft and hard solder

Question 19

What is hard soldering?

Answer 19

Also know as silver soldering or cupro tectic welding this is because the rod uses a small amount of silver to lower its melting point

Question 20

What is soft solder?

Answer 20

It’s a means of jointing pipe using traditional plumbing solder, solder is usually incorporated into each each one in the form of an integral ring, fittings without this ring of solder are also available and are termed “end feed”

Question 21

What must be done when solder is used in heating systems?

Answer 21

They must be flushed out thoroughly to remove baby excess or residue flux

Question 22

What solder must be used if on a water mains?

Answer 22

Lead free

Question 23

What are two different forces of attraction?

Answer 23

Surface tension and adhesive

Question 24

Name some jointing techniques ?

Answer 24

Push fit joints, press fit joints, solder less joints

Question 25

What are the advantages of copper pipe?

Answer 25

Professional image easy to work, durable and long lasting, biostatic, recyclable, withstands high temps, safe in use, full bore no insert required