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Glossary of Compressed
Air Terms
A
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A&I
A&R
Absolute
efficiency
Absolute
filtration rating
Absolute
micron rating
Absolute
pressure
Absolute
temperature
Absolute
viscosity
Absorb
Absorbent
filter
AC
Acidity
ACFM
ACT
Activated
alumina
ACTR
Actual
capacity
Adiabatic
compression
Adiabatic
efficiency
Adsorb
Adsorbent
filter
Adsorptive
filtration
Aeration
Aerosol
Aftercooler
Aftercooling
Air
Air
actuator
Air
amplifier
Air
borne
Air
brush
Air
bubble technique
Air
cooled compressor
Air
curtain
Air
cylinder
Air
dryer
Air
flow
Air
knife
Air
leak
Air
lock
Air
motor
Air
nozzle
Air
padding
Air
preheater
Air
pressure
Air
pump
Air
receiver
ALT
Altitude
Alternating
current (AC)
Amagat's
law
Ambient
Ammonia
Amonton's
law
AMP
Ampere
(AMP)
Ancillary
equipment
Anhydrous
Anion
ANLG
ANR
Anti
pulsation tank
Anti
re-entrainment sock
AP
A.P.I.
Artificial
demand
ASHRAE
ASL
A.S.M.E.
A.S.T.M.
ATA
ATM
Atmosphere
Atmospheres
absolute (ATA)
Atmospheric
boundry level
Atmospheric
dew point
Atmospheric
inversion
Atmospheric
pressure
Atomize
Attenuation
Automatic
sequencer
Avogadro's
law
Axial
compressor
A
B
C
D
E
F
G
H
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J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
BA
Back
pressure
Bag
blinding
Bag
filter
Bag
house
Bar
Barometric
pressure
Bara
Barg
Base
plate
Bead
ring
Bernoulli's
principle
Beta
ratio
BHP
Bicarbonate
BLDN
Blowdown
Blower
Blow
off control
BLWR
Body
Bonnet
Boolean
logic
Booster
Boyle's
law
BP
Brake
horse power
Branch
lines
Breakdown
maintenance
Breaker
Breaking
pressure
Breather
Breathing
air
Bridging
British
thermal unit
Brownian
diffusion
BSPP
BSPT
BTU
Bubble
Built-in-dirt
Built
up back pressure
Bumper
Buna
N
Burst
pressure
By
pass
By
pass valve
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
Can
velocity
Cap
Capacity
Capacity
filtration
Capacity
gauge
Capillary
tube
Cap
tube
Carbonate
Carbon
dioxide
Carbon
monoxide
Carbon
residue
Casing
Celsius
Center
tube
Centrifugal
compressor
CFM
Charle's
law
Chatter
Chip
control
Chipping
hammer
Check
valve
Chlorine
Chlorofluorcarbons
Choke
Cleanable
Cleanliness
level
Clean
room
Clean
pressure drop
Clearance
Clearance
pocket
Clevis
Closed
loop system
CNG
Coalescing
filter
Code
Coefficient
of discharge
Cold
differential test procedure
Cold
start
Collapse
Collapse
pressure
Compensator
Composition
of air
Compressed
Compressed
air
Compressed
air challenge
Compressibility
Compressibility
factor Z
Compression
efficiency
Compression
Isothermal
Compression
ratio
Compressor
Computer
control
Condensate
Condenser
Conduction
Connector
Constant
speed control
Contaminant
Contaminant
capacity
Contaminant
failure
Control
valve
Convection
Convolution
Coolant
Cooling
tower
CPM
Cracking
Critical
pressure
Critical
speed
Critical
temperature
Crosshead
compressor
Crosshead
assembly
Crosshead
loading
CSA
CTD
Cubic
feet per minute (CFM)
cu
m/sec
Cut
in cut out pressure
Cycle
Cycle
time
Cylinder
Cyclone
Cyclone
separator
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
Dalton's
law
DC
Dead
end pressure
Degrees
Celsius (°C)
Degrees
Fahrenheit (°F)
Degrees
Kelvin (°K)
Degree
Rankine (°R)
Degree
Réaumur (°Ré)
Degree
of intercooling
Degree
of saturation
Deliquescent
Deliquescence
Direct
current
Directional
control valve
Delta
P
Delta
T
Demand
Demand
side management (DSM)
Demulsibility
Density
Depth
filter
Desiccant
Design
pressure
Desorption
Dew
point
Dew
point cup
Diaphragm
Diaphragm
compressor
Diaphragm
cooling
Differential
pressure
Differential
pressure indicator
Diffuser
Dirt
holding capacity
Disc
Discharge
piping
Discharge
pressure
Discharge
temperature
Displacement
compressor
Displacement
of a compressor
Disposable
filter
DOE
DOP
Double
acting compressor
Downstream
Drag
Drain
valve
Dripleg
Drive
Dropleg
Dry
adiabatic lapse rate
Dry
bulb temperature
Dry
gas
Dry
unit (oil free)
Dual
control
Duct
Durometer
Dust
cake
Dust
holding capacity
Duty
cycle
Dynamic
losses
Dynamic
type compressors
Dynamic
viscosity
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B
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D
E
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M
N
O
P
Q
R
S
T
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W
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Y
Z
Effective
area
Efficiency
Efficiency
compression
Efficiency
isothermal
Efficiency
mechanical
Efficiency
polytropic
Efficiency
volumetric
Ejector
compressor
Element
Emulsibility
Emulsifier
Emulsion
End
cap
Energy
audit
Energy
conservation
Energy
kinetic
Energy
storage
Enthalpy
Entrainment
ratios
Entropy
Environmental
contaminant
Evaporation
Evaporator
Exothermic
Expanders
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
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W
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Y
Z
FAD
Fatigued
Ferrography
Fick's
law of diffusion
Filter
Filter
breather
Filter
coalescing
Filter
efficiency
Filter
element
Filter
head
Filter
housing
Filter
inline
Filter
life test
Filter
medium
Filter
oil bath
Filter
separator
Filtration
First
law of thermodynamics
Fixed
compression ratio
Flange
Flash
point
Flexible
mounting
Flow
Flow
control valve
Flow
diagram
Flow
meter
Flow
rate
Flushing
Foot
Forced
draft fan
Fouling
Free
air (FAD)
FRL
Frost
point
Full
load
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
Gag
Galling
Gallon
Gas
Gas
bearings
Gas
bypass
Gas
compressor
Gas
drying
Gas
laws
Gate
valve
Gauge
Gauge
pressure
Glycol
dehydration
Governor
GPM
Grade
D breathable compressed air
Gravimetric
efficiency
Guide
Guide
vane
A
B
C
D
E
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H
I
J
K
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M
N
O
P
Q
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S
T
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W
X
Y
Z
Head
adiabatic
Header
Head
polytropic
Head
pressure
Heat
exchanger
Heatless
dryer
Heat
reactivated dryers
Heat
recovery
High
efficiency filtration
High
volume low pressure
Horsepower
(HP)
Horsepower
brake BHP
Horsepower
gas
Horsepower
ideal
Horsepower
indicated
Horsepower
peak
Horsepower
theoretical
Hot
gas
Hot
gas bypass valve
Hot
start
Housing
Humidity
Humidity
specific
Humidity
relative
HVLP
Hydrocarbons
Hydrogen
chlorofluorocarbons (HCFC)
Hygroscopic
cells
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
IBV
ICFM
I.D.
Ideal
gas
Ideal
multi stage compression
IGV
Immiscible
Impeller
Inches
of water
Indicated
power
Indicator
card
Indicator
pressure
Induced
draft
Inducer
Inert
gas
Inertia
base
Inertia
forces
Influent
Ingested
contaminants
Inlet
pressure
Inlet
temperature
Inlet
throttle
Inline
filter
Insolubles
Instrument
air
Intake
filter
Intake
filter silencer
Intank
check valve
Intercooler
Intercooling
Internal
energy
Ideal
gas
International
Organization for Standardization
Irreversible
process
Isentrop
Isentropic
compression
Isentropic
efficiency
Isentropic
power consumption
ISO
Isobar
Isochor
Isotherm
Isothermal
compression
Isothermal
efficiency
Isothermal
power consumption
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
Jackleg
Jack
hammer
Jet
Joule
Joule
effect
Joule
Thompson effect
Jounce
Journal
Journal
bearing
JTPF
JTPM
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
Kelvin
(K)
KG/CM²A
Kickout
type clutch
Kilo
Kilobar
(kb)
Kilowatt
(kW)
Kilowatt
hour (kWh)
Kinematic
viscosity
Kinetic
energy
Knock
out
kPa
K
value
kW
kWh
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
L/sec
Labyrinth
compressor
Lacquer
Langelier's
index
lb
lb/hr
Leak
air
Leak
detector ultrasonic
Lift
Linear
actuator
Liner
Liquid
piston
Liquid
ring rotary compressor
Load
Loaded
Load
factor
Load
time
Lobe
Low
pressure coat
Lubrication
Lubricator
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
M3/min
M3/hr
Mach
number
Man
way
MAWP
Maximum
operating pressure
Mayonnaise
Mechanical
efficiency
Media
Media
migration
Medium
Membrane
dryer
Mesh
size
Micron
Micron
rating
Millibar
Mineral
oil
MMCFD
Modulating
control
Modulating
unload
Moisture
separator
Moisture
trap
Molecular
sieves
Molecular
theory
Mottling
MPCV
MSDS
Multistage
axial compressor
Multistage
centrifugal compressor
Multistage
compressor
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
N
cu m/min N cu m/hr
Natural
frequency
N.B.
NEC
Needle
gauge
Needle
scaler
Negative
pressure
NEMA
NFPA
NL
NM³/HR
No
load
Nominal
efficiency
Nominal
filter rating
Nominal
micron rating
Noncondensables
Noncooled
compressor cylinders
Noncorrosive
gas
Nonlubricated
compressor
Normal
air
Nozzle
Nozzle
(valves)
NPT
NPTT
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
O.D.
OEM
Off
gas
Oil
aerosol
Oil
bath filter
Oil
free compressor
Oil
system
Operating
pressure
Operating
pressure burst
Orifice
OSHA
Overhung
type centrifugal compressor
Overpressure
accumulation
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
P1
P2
P3
P4
P5
Package
power
Palm
coupling
Particle
density type filter
Particulate
type filter
Paving
breaker
PDP
Pedestal
type centrifugal compressor
Perfect
intercooling
Performance
curve
Permeability
pH
Pinion
Piston
displacement
Pleated
filter
Pneumatic
Pneumatics
Pneumatic
tools
PNEUROP
oxidation test (POT)
Point
of use
Pore
Potential
energy
Positive
displacement compressors
Pounds
per square inch (PSI)
Pour
point
Power
theoretical
Power
wheel
PPB
PPM
Precool
Precooler
Pre
open warn
Pressure
Pressure
absolute
Pressure
back
Pressure
cracking
Pressure
critical
Pressure
dewpoint
Pressure
discharge
Pressure
drop
Pressure
gauge
Pressure
inlet
Pressure
pot
Pressure
range
Pressure
rated
Pressure
regulating valve
Pressure
relief device
Pressure
rise
Pressure
static
Pressure
system
Pressure
total
Pressure
velocity
Preventive
maintenance
Process
Pseudo
critical pressure
PSI
PSIA
PSID
PSIG
Psychrometry
PTFE
Pulsation
damper
Pumping
Purge
air
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
Qci
Qca
Qcr
Quick
coupler
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
Radial
compressor
Rebound
Receivers
Reciprocating
compressors
Recovery
pressure
Reduced
pressure
Reduced
temperature
Refrigerant
Refrigeration
dryer
Regeneration
Regulator
Reheaters
Relative
clearance volume
Relative
humidity
Relative
vapor pressure
Required
capacity
Relief
valve
Reversible
process
Reynold's
number
Rings
Ring
sticking
Rock
drill
Rolling
element
Rotary
actuator
Rotary
blowers
Rotary
compressors
Rotary
sliding vane compressors
Rotor
Rust
prevention test
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
SAE
Safety
valve
Safety
relief valve
Saturated
air vapor mixture
Saturated
vapor pressure
Saturation
Saturation
pressure
Scale
SCFM
Screw
compressor
SCUBA
Sea
level
Seals
Seat
Second
law of thermodynamics
Sequence
Set
pressure
Shaft
Shaft
input
Shaft
sleeves
Shaft
speed irregularity
SI
Silica
gel
Single
acting
Single
stage compressors
Single
stage centrifugal compressors
Siphon
feed gun
Sleeve
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