101k Flashcards
What does the groove at the bottom of tube cutters allow you to do
Cut off/ removal of a flare
When flaring always use
Oil so it doesn’t crack
Flares are at what degree
45°
3 types of benders
Spring benders, mechanical benders, power benders
Is acetylene highly flammable
Yea
Regulators reduce pressure in acetylene bottles to the hose from
250 psi to 15 psi
When storing bottles always make sure pressures are at
0
Common name for Acetylene tank
B tank
What wrench do you use to open the valve on an acetylene bottle
Valve wrench
What are the hose colors for acetylene and oxygen
Red - acetylene
Green - oxygen
Cutting fluid is used for
-Keeping the tool cool while cutting
-Keeping the material cool
-reduce wear on tool and material you’re cutting
-provides a good finish on cut
Two types of copper
Hard drawn and soft drawn
Cooper pipe is usually what two lengths
12ft and 20ft
What is coppers main disadvantage
It has a high coefficient of expansion
Copper tube used for refrigeration called
ACR
Two types of wall thicknesses
L and K
Type K has what paint
Green
Type L has what paint
Blue
Can you bend type M copper tubing
No and not for refrigerant lines
Keep copper away from overhead power lines (true or false)
True
FPT means
Female pipe thread
MPT means
Male Pipe Thread
90° ELL fitting
Both sides are same length
90° street ELL fitting
Both sides are different sizes
