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SPCL36104-S Suction System
3.2
OPERATOR LOAD & UNLOAD STATIONS
The operator opens the load door and slides the part over mandrel. When finished, operater
removes the part.
3.3
BLAST PRESSURE CONTROL
3.3.1 Locate the Pressure Regulator on the pipe string on the media storage hopper. Rotate
the Pressure Regulator knob clockwise to increase, or counter clockwise to decrease
the Blast Pressure.
3.3.2 Precision Regulator
An optional Precision Pressure Regulator pilot and slave regulator provides more
accurate control of Blast Pressure when blasting parameters are critical. Pressure is
adjusted manually at the pilot regulator, clockwise to increase and counter clockwise
to decrease the Blast Pressure.
3.3.3 (N/A) Optional Front Access Pressure Regulator
This option allows the operator to monitor and/or change the Blast Pressure from the
front of the Blast Cabinet. The operator does not have to walk to the back of the
machine to adjust the pressure.
3.4
BLAST COMPONENTS
The MH-2 Suction Blast Gun and MH-3 Suction Blast Gun mix blast air and media. They
exit from the nozzle creating the blast. The air leaving the air jet entering the nozzle cone
creates suction, pulling media and air through the media hose from the Media Regulator. See
Figures 1 and 2.
3.4.1 Nozzle
The Suction Blast Gun is designed to accept nozzles made of boron carbide, tungsten
carbide or ceramic. Boron carbide is the longest wearing nozzle material and is
strongly recommended when blasting with aluminum oxide or silicon carbide medias.
Standard sizes are 1/4”, 5/16”, 3/8” and 7/16” ID. A nozzle adapter is threaded onto
the Gun Assembly to hold the nozzle in place.
Boron carbide is the hardest and longest wearing nozzle material. It is strongly
recommended for use when blasting with aluminum oxide or silicon carbide medias.
A 3/8” boron Venturi nozzle is available for the MH-3 suction gun.
3.4.2 Air Jet
The air jet is located inside the Suction Blast Gun and is threaded into the air inlet
connector. It discharges the blast air to the rear of the nozzle. The air jet is hardened
steel for extended wear.
