PLH 113 Copper Test 1

Mechanical Designs and Operation/ Penn College of Technology/ Mr. Bridgens

Annealed Copper

Soft Copper

Rigid Copper

Hard Copper

Methods to Join Copper

Solder, Brazing, Compression, and Flaring

Solder

Apply heat, flux, filet metal

Brazing

Hotter Temperature and maintains higher pressure

Can Copper rust

No

How can Copper deteriate

acidic conditions

Types of Copper (Thickest to thinnest)

K, L, M, DWV

Type-K copper can come in?

Rigid and Annealed

Type-L copper can come in?

Rigid and Annealed

Type-M copper can come in?

Rigid

Type-DWV copper can come in?

Rigid

Why doesn’t Type-L and Type-DWV copper come in annealed copper

the walls are too thin and would cause the copper to kink

Type-K copper’s color

Green

Type-L copper’s color

Blue

Type-M copper’s color

Red

Type-DWV copper’s color

Yellow

What is Type-DWV copper used for?

Drainage

How does plumbing measure tubing

inside diameter

How does refrigeration measure tubing

Outside Diameter

What are annealed copper pipes sold in

rolls

What are rigid copper pipes sold in

Straight 20ft Lengths

1st step of soldering

Measure and cut to copper

2nd step of soldering

Ream the burr in in the pipe

3rd step of soldering

Clean outside of tubing and inside of the fitting

4th step of soldering

Dry Fit

5th step of soldering

Apply flux to outside of tubing and inside of the fitting

6th step of soldering

put the pipes and fittings together and twist

7th step of soldering

Heat pipe and apply solder

8th step of soldering

Wipe and cool the joint

Where to you apply heat when soldering

middle of the fitting

What is considered “hard soldering”

Brazing

What does the flux do?

Cleans piping and fitting, draws solder, prevents oxidation

Elbow’s purpose

changes direction

Tee’s purpose

adds a branch

Wye’s purpose

adds a directional flow and a branch

Adaptor’s purpose

changes methods by which pipes are joined together

Reducer’s purpose

to join a larger size tube to a smaller size

Coupling’s purpose

to join 2 pieces of pipes in the same manner in the same diameter in a straight line

2 types of couplings

Stop and Straight

Cap’s purpose

covers the end of pipe by going over the outside

Plug’s purpose

goes inside another fitting to close off flow

Union’s purpose

fitting that joins 2 pieces of pipe and allows mechanical connection to access the piping system

another name for Union Fitting

Ground Joint

MPT

Male Pipe Thread

FPT

Female Pipe thread

Street Fit

Reduces one end of fitting to fit inside another fitting of the same size

2 advantages of Street Fitting

Reduces solder joints and saves space

Fittings are manufactured in…

Wrot and Cast

what is wrot made out of

99.9% copper

Mechanical Fittings

Fittings that allowed access to piping system by mechanical means

3 Parts of Compression Fittings

Nut, Body, and Sleeve/O-Ring/Gasket

3 Types of Flaring Tools

Hammer Flare, Pin and Bar Compression, and Self Generation

Flare Angles (degrees)

37.5 and 45

Steps to producing a good flare

Cut and Ream

Put nut on the tubing correctly

Attach flaring bar with bevel towards flare (1/16in)

Check to make sure nut fits over the flare

Compress

Bushing

goes inside a fitting and reduces to smaller pipe sizes/ saves space and uses fitting end

Cast (Brass) is made of

Copper, tin, lead, and zinc

What do you use when soldering a pipe with water

Bread Plug

True or False: Hard solder is considered brazing material. 

True

True or False: Copper tubing for plumbing is measured by its inside diameter. 

True

True or False: Copper tubing for refrigeration is measured by its inside diameter. 

False

True or False: The same fitting used for 3/4" type K copper tubing can also be used for 3/4" type M copper tubing.   

True

True or False: Type K copper is designated by blue writing on the tubing. 

False

True or False: Capillary action is the process by which solder enters the joint between the tubing and the fitting.

True

True or False: Two types of solder fittings are wrot and cast. 

True

True or False: Type  DWV 1 1/4" copper can be purchased in 100' rolls 

False

True or False: A copper tubing cutter can also be used for cutting steel pipe 

False

True or False: When soldering, it is just as important to clean the inside of a fitting as it is to clean the outside of the tubing.  

True