FEATURES
• Stage One of two-stage system removes water and
contaminants down to 5 microns
• Stage Two coalescer removes oil and submicron
particles down to .01 microns
• In-line filter designed with reusable filter element
• Completely disassemble filter and coalescer
by hand without tools
• Auto-drain valves standard with filter and coalescer
BENEFITS
• Dry air for all air-operated equipment
• Clean air increases equipment life and product
performance
• Easy-to-clean and change coalescing filter
• No-hassle maintenance
• Eliminates manual emptying of filters
INDUSTRIAL
PROVEN QUALITY. LEADING TECHNOLOGY.
IN-LINE AIR FILTERS
& COALESCERS
Remove Water, Oil & Contaminants from Compressed Air
Components and systems for clean, dry air
Model Number
234405
Model Number
234409
Model Number
234408
Call today for product information or to request a demonstration.
1.87 7.8 4GRA C O (1-877-844-7226) or visit us at www.graco.com.
All written and visual data contained in this document are based on the latest product information available at the time of publication. Graco reserves the right to make changes at any time without notice.
©2003 Graco Inc. Form No. 320553 Rev. A 7/03 Printed in the U.S.A.
All other brand names or marks are used for identification purposes and are trademarks of their respective owners.
Air Flow Maximum
Part Number Description Air Inlet Air Outlet Capacity Inlet Pressure
234405 Air filter/coalescer assembly 1/2" npt (f) 1/2" npt (f) 70 CFM 175 psi
(both with auto drain) (1.2 MPa, 12 bar)
234406 Stage 1 - Air filter with auto drain 1/2" npt (f) 1/2" npt (f) 108 CFM 175 psi
(1.2 MPa, 12 bar)
234407 Stage 2 - Coalescer with auto drain 1/2" npt (f) 1/2" npt (f) 70 CFM 175 psi
(1.2 MPa, 12 bar)
234408 Air filter with auto drain 3/4" npt (f) 3/4" npt (f) 300 CFM 175 psi
(1.2 MPa, 12 bar)
234409 Coalescer with auto drain 3/4" npt (f) 3/4" npt (f) 115 CFM 175 psi
(1.2 MPa, 12 bar)
Instruction Manual
309919
Technical Specifications & Ordering Information
Air Control Systems
2
4
6
8
1
1
1
1
2
4
6
8
1
2
4
6
8
1
1
1
1
2
4
6
8
1
Refrigerated
Air Dryer
Graco Membrane
or Desiccant Air
Drying Systems
at Paint Booth
Compressor
Drain air compressor
daily in the A.M.
Oil Coalescer
234409
Air Control
Unit or Air
Filter
Air Control
Unit or Air
Filter
Air Filter
234408
Main air line
1" pipe minimum
Additional
1/2" drop
Ball
Valve
Additional
1/2" drop
Additional
1/2" drop
1/2" drop
1/2" drop
Ball
Valve
Ball
Valve
Ball
Valve
Ball
Valve
Ball Valve
Ball
Valve
Ball
Valve
Ball Valve
Ball Valve
Ball Valve
Drain daily
Ball
Valve
Union
Union
Union
Union
Union
Union
Union
Union
Union
Ball
Valve
Main air line
1" pipe minimum
Flexible Hose
Between Compressor
and Main Air Line
15' to 20'
Slope Down and Away
Recommended 4" drop in 50' (galvanized or copper pipe is recommended)
Drain Leg
Drain Leg
Air In
Air Out
Ball Valve
Drain daily
Ball Valve
Drain daily
Bypass
Recommended Air Piping Layout
-
1
-
2
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