Graco 249020 B, 234418 User Manual
Instructions - Parts List
ti22159a
Membrane Air Drying
System
Model 234418, Series C
Maximum Working Pressure 160 psi (1.1 MPa,
11 bar)
Maximum Temperature 150° F (65° C)
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions
309920D
EN
Includes:
Part No. Series Description
234402 B Stage 1 - Air Filter with auto drain
Removes water and contaminants down
to 3 microns.
234397 B Stage 2 - Coalescer with auto drain
Removes oil and sub-micronic particles
down to 1 micron.
118560 A Stage 3 - Membrane Air Dryer
Removes uncondensed moisture.
234394 A Self Relieving Air Regulator
288798 A Shut-off Valve
Air
Air Inlet
npt(f)
1/2” 1/2” 100 CFM 175 psi
1/2” 1/2” 83 CFM 175 psi
1/2” 1/2” 30 CFM 175 psi
3/8” 1/4” 100 CFM 160 psi
Outlet
npt(f)
Air Flow
Capacity
at 100 psi
(0.7 MPa, 7 bar)
Maximum
Operating
Pressure
(1.2 MPa, 12 bar)
(1.2 MPa, 12 bar)
(1.2 MPa, 12 bar)
1.1 MPa, 11 bar)
175 psi
(1.2 MPa, 12 bar)
Installation
2
4
6
8
1
1
1
1
2
4
6
8
1
SATURA
TED
NORMA
DESICCANT
¨
2
4
6
8
1
1
1
1
2
4
6
8
1
Membrane air
drying system
Desiccant air
drying system
Ball Valve
Drain Valve
Drain
Leg
Air Control unit
or Air Filter
1/2” (13
mm) drops
Main Air Line
3/4” (19 mm) minimum
1-1/4” (32 mm) optimum
S
l
o
p
e
s
d
o
w
n
a
n
d
a
w
a
y
R
e
c
o
m
m
e
n
d
e
d
4
”
(
1
1
7
m
m
)
d
r
o
p
i
n
5
0
’
(
1
5
.
2
4
m
)
g
a
l
v
a
n
i
z
e
d
Coalescer
Air
Filter
Compressor
Flexible hose
between compressor
and stand pipe
1
5
-
2
0
f
t
.
(
4
.
6
-
6
.
1
m
)
• Main Air Line stand pipe should not be smaller than compressor outlet size.
• A minimum of 25 ft. (7.62 m) from compressor to first filter outlet is required to cool air [50 ft. (15.24 m) optimum]
OR
Main Air
Shut-off Valve
Installation
1. Before installing air line components, blow out the
pipe line to remove debris. Be sure air to the regulator is clean. Erratic operation or loss of regulation is
usually caused by dirt in the regulator.
2. Install the Air Drying System as close as possible to
the equipment it serves.
Shop Air Piping Layout
3. Install air shut-off valve 288798 upstream from the
air system to isolate it for service.
4. Install system so air flows through filters in the direction noted on top of filter.
5. A minimum 1/2” npt piping is recommended. Avoid
using too many fittings, couplings, etc., which will
restrict air flow.
2 309920D
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