POWER GUN SUCTION BLAST TOOLS
Page 3
© 2018 CLEMCO INDUSTRIES CORP.
www.clemcoindustries.com
Manual No. 24189, Rev. C 06/18
stream is combined with air and abrasive before exiting
the nozzle.
Additional controls on the H2O mixing chamber, allow
the user to control all of the following from the blast gun:
1. Dry blasting with air and abrasive
2. Wet blasting with air, abrasive, and water
3. Wash down with air and water
4. Blow down with air only
Figure
3
1.5.3 Hose
Limitations
1.5.3.1
Material Hose: Standard Power Gun assemblies
come with 16 feet or 30 feet of material hose. The
maximum recommended length is 30 feet, provided
adequate pressure is maintained at the gun and the
nozzle and jet are maintained as noted in Section 6.0.
1.5.3.2
Air Hose: Standard Power Gun assemblies come
with 16 feet or 30 feet of air hose. Longer length of bulk
air hose may be ordered or a 3/4" ID or larger extension
hose may be added, provided adequate pressure is
maintained at the gun. Refer to Section 2.1.
2.0 COMPRESSED-AIR and ABRASIVES
2.1
Compressed Air Requirements
2.1.1
The table in Figure 4 shows approximate air
consumption (cfm) at various pressures (psi) for the
Power Gun alone. Additional air is needed for a
supplied-air respirator, plus other air tools that may be in
use at the same time as the Power Gun. The table
shows air consumption; it does not show the
recommended compressor size. Check with a
compressor supplier for compressor recommendations
based on total compressed-air requirements.
2.1.2
For most applications, the compressor should
be large enough to maintain 80-100 psi under working
conditions. Delicate work may require lower pressure,
and tough applications may require higher pressure.
2.1.3
The air-jet orifice is 1/4" ID and the nozzle orifice
is 1/2" ID.
Air consumption in cfm
PSI 40 50 60 70 80 90
100
120
140
CFM 49 58 67 76 85 94
103
121
138
Figure
4
2.2 Abrasives
2.2.1
Abrasive Size:
The Power Gun utilizes common
abrasives that are 12 mesh and finer. Limited air supply,
low blast pressure, or heavy abrasive may limit abrasive
to smaller sizes.
2.2.2
Use only abrasives specifically manufactured for
blast cleaning and that are compatible with the surface
being blasted. Abrasive produced for other applications
may be inconsistent in size and shape, and contain
particles that could jam the suction gun, and produce an
unsatisfactory finish.
WARNING
All abrasives produce hazardous dust. Obtain a
safety data sheet (SDS) for the blast abrasive
being used and make sure it is available for the
operator to read and understand. Failure to use
appropriate respiratory equipment can result in
injury or death.
H20-Blast Gun Assembly
Air Hose
Material Hose
Nozzle
Mixing Chamber
Gun Assembly
3/4" Female Water
Hose Connection
Water Valve
Water Hose
Water Jacket
Air Induction
Valve
