Copper and Brazing Flashcards
To heat and then cool the pipe in order to soften and make the pipe more flexible
Anealing
A fitting designed to join a tube by means of pressure or friction
Compression fittings
To spread the end of the tube
Flaring
Generally recommended for exposed lines such as hot and cold
Hard temper tube
Type K colour and thickness
Green, Thickest wall
Type L colour and thickness
Blue, Medium wall
Type M colour and temper
Red, Hard temper only
Type H colour
White
DWV Colour
Yellow
Copper tube has ____________ than copper pipe
thinner walls
Copper pipe is measured by what standard
NPS
Copper tube is measured by
OD
Copper Joint Types
Soldered, Compression, Flared, Press connect
Does pressure fittings have a small or large cup
Large
Molten brass in a mould (sandy rough) is called
Cast Brass
Finished brass (smooth and yellow) is called
Barstock
Pressure heated fittings in a die is called
Wrot copper
Red Brass consists of what % copper and what % zinc
85% and 15%
Yellow Brass consists of what % copper and what % zinc
66% and 34%
bronze consists of what
90% copper 10% tin
Soft soldering is heated 450 degrees and…
Lower
Hard soldering is heated 450 degrees and…
higher
BAg is made of what and used for?
Silver, dissimilar metals
BCuP is made of what and used for?
Copper, copper to copper
What does RB stand for in brazing
Rod Brazing
What fumes are considered very toxic to inhale
Zinc and Cadium
Manual Torch brazing
Carborizing 2.5x-3x
BAg covers a wide range of temperatures from
618 to 1038 degrees celsius
Lead melts and solidifies at
A) 334
B)330
C)331
D)325
D
50/50 begins to and melts at
182, 250
Higher what makes a smother joint
Tin
Any solder that contains ___ lead cant be used for potable water
0.2%
Long, thin, and pointed cone is created by what tips
Swedge
Short, thick, and boulbos is created by what
Straight bore
Draws molten solder into narrow Gap of the joint
Capilary Action
