101k Flashcards
What are the grooves at the bottom of tube cutters for
Cutting flares
A flaring tool and flare is always
45°
When swedging what should you add
Oil
Annealed copper is hard of soft?
Soft
Pure acetylene is
High flammable
Colorless
Non pungent odor
Another name for acetylene tank is
B tank
When storing a cylinder always have the pressure at
0 psi
Regulators on acetylene tanks reduce psi from
250 to 15psi
Acetylene hoses are
Red
Oxygen hoses are
Green
Two types of copper
Hard drawn and soft drawn(annealed)
What is cutting fluid used for
Keep tool and material cool
Reduce power consumption
Two widths of copper
L and K
What color is k tubing
Green paint
What color is L tubing
Blue
What type of tubing do we not use in refrigeration
M and it’s red
A coupling fitting
Both sides are the same and go onto a smaller pipe
ELL 90 fitting
Both sides are the same
Street ELL 90 fitting
Both sides are different
Redcuing coupling fitting is a
Bigger fitting to smaller (5/8- 3/8)
Iron pipe is also called
Steel pipe
Iron pipe is only used with
Ammonia
Two types of iron pipe used in refrigeration
Standard schedule #40
Extra strong schedule #80
Fitting allowance is
Throw of the fitting - thread engagement