BNP Suction Blast Guns0 pages

Description

TECHNICAL DATA SHEET

High-production, hand-held blast cleaning gun for use in any suction blast cabinet. May be mounted in fixed position.
Made from cast/machined aluminum.
Gun assembly includes gun body, orifice
with locknut, O-ring and nozzle holding
nut. Order nozzle separately.

BNP Suction
Blast Guns

Note: For safe, efficient blasting, read
and follow the owner's manual and seek
training for everyone who will use this
equipment.

Purpose
The BNP gun directs a high-speed mixture of air and abrasive to quickly remove
corrosion, mill scale, coatings, heat treatment residue, carbon buildup, tool marks,
and burrs. The blast stream from a BNP
gun can produce a uniform texture or create an etched finish to increase bonding
strength for coatings.
High-performance blast gun provides
comfortable grip for operator, and allows
precise control of blast pattern. The BNP
gun keeps the air jet and blast nozzle precisely aligned to maximize blast efficiency
and minimize gun-body wear.
A knurled nut at gun outlet allows operator to change nozzles without tools. Gun
accepts a variety of nozzles and extensions, so operator can select the best nozzle size and nozzle composition for the
application.
Works with most recyclable blast media
– glass bead, ceramics, aluminum oxide,
and some sizes of steel grit and shot.
Select appropriate blast media for your
application.

Requirements for Operation
These items are required but not
included with the BNP gun
• Suction blast nozzle – select from table
on back
• Clean, dry compressed air of sufficient
volume to maintain pressure at the blast
nozzle. Volume required will depend on
air jet selected (See table on back)
• Blast media – abrasive, stripping, or
peening media suitable for the
application

Fits the hand easily

Cutaway shown

The BNP Gun; solid and easy to maintain

Description of Operation

Advantages

The air jet at the back of the nozzle
directs a high-speed stream of compressed
air through the mixing chamber and out
the nozzle. The rapid passage of this air
generates negative pressure, causing blast
media to flow into the mixing chamber
and out the nozzle. This technology is
widely known as venturi or suction blasting.

• Comfortable pistol-grip design reduces
operator fatigue and increases
productivity during prolonged blasting
• Precisely shaped mixing chamber
eliminates slugging and uneven media
flow common to inexpensive guns
• Standard ceramic nozzle works with
most blast media. Optional tungsten
carbide nozzles last longer than
ceramic nozzles in most applications
• Optional boron carbide nozzles easily
handle aggressive abrasives
• BNP gun accepts assorted air jet and
nozzle sizes to take advantage of the
available air supply
• BNP gun accepts extension nozzles and
angled tip nozzles for special
applications

The operator holds the BNP gun at a
predetermined distance and angle, relative
to the surface being blasted. The BNP gun
can clean, finish, or peen the part being
blasted. By moving the gun and the part,
the operator quickly covers as much of the
surface as needs blasting.
A cast-in hole at the top allows the operator to attach the BNP gun to a fixed
bracket (not included). The part can then
be moved under the nozzle for blasting,
freeing the operator’s hands to manipulate
the part.
When the part is sufficiently processed,
the operator releases the pedal to stop
blasting.