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Copper tube, tubing and fittings


060101i




by JCW
Modified from Fluffybunnyshoes

Colours of copper tube

Type K: Green


Type L: Blue


Type M: Red


Type H: White


Type DWV: Yellow

Three advantages of copper tube over steel pipe.

Malleability
Ductility


Good resistance to corrosion

What are the three uses for DWV copper tube?

Drain
Waste
Venting

Three applications of type K copper

Water service lines


Water distribution systems


Low-pressure steam lines


Heating systems


Gasfitting


DWV systems


O2 and other specialized hospital piping systems


Oil piping systems

Application for Type L tube in the Gas Industry and Plumbing

Gas: below grade piping if factory coated. Above ground for all systems up to 1 1/4" NPS.




Plumbing: DWV, water service, water distribution.

What is the main application of Type M copper?

Residential and light commercial. Water and heating lines.

Difference between Soft and hard temper copper tube.

Soft copper can be bent without the use of spencial bending tools

Greatest disadvantage of copper pipe over iron or steel pipe?

Rate of expansion

Minimum size (diameter) of Type K, L, M, and DWV

K, L, and M; 1/4"



DWV: 1 1/4"

Difference between oxygen tube and type K and L.

O2 pipe is cleaned and capped from the factory.

Copper pipe is made from 99.7% pure copper. What does 99.7% pure copper mean?

Its copper with 0.3% impurities

Metals and percentages for Yellow Brass, Red Brass, and bronze

Yellow Brass: 66% Copper, 34% zinc


Red Brass: 85% Copper, 15% zinc


Bronze: 90% Copper, 10% tin

Types of copper tube used in hot and cold water lines

K, L, M

Types of copper tube used in DWV systems

DWV, K, L, M

Types of copper tube used in water heating system

K, L, M

Types of copper tube used in steam heating systems

Type K


Type L

Types of copper used in underground gas applications

Type K
Type L with factory coating


Type G



What does the abbreviation S.P.S mean when applied to copper pipe?

Standard Pipe Size

Copper tube is lighter than the same size steel pipe, but copper is heavier than steel. Explain

Copper has a higher relative density, but copper tube has a thinner inner wall.

What is the formula for pipe expansion




Note: Coefficient of expansions will be given to you for your exam

Coefficient x Length x Temperate change


When do we start measuring the pipe from I.D to O.D?

I.D for up to 12"


O.D for 14" and over.

Copper tube used on drainage and venting can be joined by which two methods?

Soldering
MJ clamp.

Copper tube as used for above ground water lines can be joined by which four methods?

Soldering


Brazing
Flared fittings
Compression fittings

Copper wrot fittings are considered better than cast brass fittings for soldering. Why?

Because cast brass can have potential pin holes or sand holes. Copper wrot fittings won't have those.

Some water lines connected to some plumbing fixtures utilize a flexible tube connector. What type of seal is used on those?

Compression ferrule.

A Tylok fitting differes from a standard compression fitting. Explain how.

Tylok uses an additional ferrule.

Difference between a single and double flare.

double flare has the end folded over into itself to provide a more thick wall.

What angle of flare is utilized in the plumbing trade?

A 45 degree flare.

What are the maximum temperatures of substances that are conveyed in a soft soldered pipeline and the maximum steam pressure?

121C or 250F and 15 PSIG

List three factors that would have a direct effect on the maximum pressure that could be carried in a soft solder pipeline.

Temperature of the fluid in the line


Size of the tube


Types of solder

List the proper steps for making a good joint.

Measure


Mark


Cut


Ream


Clean tube and fitting


Flux tube and fitting


Assemble and heat


Solder


Wipe clean

What does 50/50 and 95/5 mean when it comes to solder?

50% tin and 50% lead


95% and 5% antimony

List two other names for "Mushy Range"

Plastic


Pasty

What does Eutectic Composition and is it a practical solder for making solder joints?

It meas a specific alloy that melts at only one temperature and not a range. Meaning it's impractical for soldering.

State the liquidus temperature of the following:
1) 95-5
2) 50-50
3) Tin
4) Lead
5) EviroBrite
6) Bridgit

1) 240.C 464.F


2) 215.C 420.F


3) 230.C 450.F


4) 327.C 620.F


5) 335.C 635.F


6) 332.C 630.F

What could happens if you don't ream your pipe?

Reduced pressure
Turbulent flow
Pipe erosion
Catch foreign matter, potentially causing a blockage.

What tools can you use to ream pipe?

Blade reamers
Pocket knives
Specialty tools

List the primary two reeasons to flux

To prevent oxidation


To promote wetting of the metal

List three different types of torches used for soldering.

Acetylene


Propane


MAPP gas


Butane


Gasoline

What is the purpose of a regulator on a soldering torch?

To lower the tank pressure output to the desired hose or working pressure.

What are the components of red brass pipe and what method is used to join it?

85% copper and 15% zinc



Threading

What temperatures are used for soldering?

For Brazing?

Soldering - below 575C or 1000F



Brazing - over 575C or 1000F

What is a cast brass fitting?

Barstock fitting?

Cast brass - made from pouring molten brass into molds. Its not polished/finished so its rough and sandy




Barstock - made from finished brass material, for smooth yellow apperance

What's another trade name for a Tylok fitting? What is it and what's special about it

Swagelok

Its a type of compression fitting with a double sleeve

What's special about a high-pressure type of compression fitting?

What's the max pressure it can withstand?

The compression sleeve has serated edges for improved grip.

Max pressure is 10,000 psi on stainless steel 1/8"

Which organization set up the standard for flared fittings?

American Society of Automotive Engineers (SAE)

What are the 3 basic designs for flares and which one do we use in the pipe trade?

37 degree, 45 degree and inverted flare.

Pipe trade uses 45 degree

Torch tips are generally numbered to indicate tip size. What does the number mean?

It roughly equals to the amount of fuel it uses per hour

What are the 4 types of torch fuels?

Acetylene
Propane

Butane
MAPP Gas (tradename BurnzOmatic)


DWV is manufactured in what size and lengths?

1 1/4" to 6"

Strait length of 12' and 20'

What is another name for Standard Pipe Size?

Steel Pipe Size

Regarding flexible tube connectors, what type of seal does that use?

Minimum diameter? Maximum length?

Compression with ferrule

1/4"
750mm or 30"