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Glossary of Compressed Air Terms :: U ::
Glossary
Index
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
- UL
- Underwriters Lab.
- Ultrasonic
leak detector
- An instrument designed to detect the
ultrasonic emissions and convert them to audible signal.
- UNC
- Thread - Unified national coarse.
- UNF
- Thread - Unified national fine.
- Unit
type compressors
- Compressors of 20 HP or less, generally
combined with all the components required to put the into operation.
- Unload
- The air compressor continues to run,
usually at full RPM, but no air is delivered because the inlet
is either closed off or modified, not allowing inlet air to
be trapped.
- Unloaded
horsepower
- The power that is consumed to overcome
the frictional losses when operating in an unloaded condition.
- Utilization
factor
- The ratio in percentage of the time
that the equipment is in operation to the total working time.
Glossary
Index
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
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