Copper Pipe And Iron Pipe

Front 1

When is Capillery action most effective

Back 1

When the gap between two pieces to be joined it is .002 inches .005 inches

Front 2

When does soft soldering occur

Back 2

At temperatures below 427°C

Front 3

When does hard soldering or brazing occur

Back 3

At temperatures above 427°C

Front 4

What is solidus

Back 4

The temperature at which 100% of the alloy is in a solid, Crystalline form but starts to melt when additional heat is applied

Front 5

When does soldering begin

Back 5

Upon reaching solidus

Front 6

What is liquidus

Back 6

The temperature at which 100% of the alloy is in a fluid, noncrystalline form

Front 7

What is plastic range

Back 7

Temperature range between solidus and liquidus

Front 8

What are two general categories of silver brazing alloys

Back 8

BAg

BCuP

Front 9

What is the difference in silver brazing alloys BAg and BCuP

Back 9

Both the same only BCuP has added sulphurous to act as flux

Front 10

At What operating temperature is soldering generally not exceeded

Back 10

121°C

Front 11

Brazing joints can be used for a greater Tensile strength or where system temperatures are as high as what

Back 11

177°C

Front 12

What constitutes the best seal on flanges?

Back 12

Contact surface to contact surface on flat and smooth surfaces with enough force to hold them together and maintain a seal

Front 13

Name two reasons why gaskets move while in place

Back 13

Bolt load, internal pressure

Front 14

Name for considerations for selecting a gasket

Back 14

Flange finish, temperature, pressures, flange face design

Front 15

Name for types of blinds commonly found in industry

Back 15

Pancake blind, valute blind, spectacle blind, flange blind

Front 16

Which type of blind requires two gaskets while the system is in service

A) blind flange

B) spectacle blind

C) pancake blind

D) Volute blind

Back 16

Spectacle blind

Front 17

Name the five common joint/flange face is found in industry

Back 17

Flat face, raised face, tongue and groove, male and female, ring joint

Front 18

Flat faced gasket joints are regarded as confined joints because the gasket is not allowed to flow freely true or false

Back 18

False, the gasket can be squeezed out

Front 19

Flat faced gaskets are used for high pressure conditions true or false

Back 19

False, they would push out

Front 20

In regards to raised face Gasket joints what are the two dimensions of the raised face that are related directly to pressure

Back 20

1/16 of an inch for low pressures, 1/4 of an inch for high pressures

Front 21

What type of joint is considered totally confined

Back 21

Tongue and groove

Front 22

How many flange bolts must you remove on a spiral wound gasket in order to facilitate the gasket removal

Back 22

Half of the bolts

Front 23

You cannot find metallic gaskets on engine heads true or false

Back 23

False, they are commonly used for their strength

Front 24

Name the three common solid metal ring designs

Back 24

Delta, oval, octagonal

Front 25

The flange that you solid metal ring gaskets are harder than the solid ring true or false

Back 25

True

Front 26

On what is nominal pipe size based

Back 26

Inside diameter (ID)

Front 27

What is the main limitation of taper threaded joints in piping

Back 27

They loosen when vibration, pressure pulses or thermal movement are present

Front 28

What two things are under stress when piping is not properly aligned or supported before assembly

Back 28

Pipes, components

Front 29

What tool is used to remove the burs from the inside of a pipe that you have just cut on a power vice

Back 29

Straight reamer

Front 30

Why is soldering more suitable than welding for joining thin metal parts

Back 30

Soldering creates less distortion due to heat