Abrasive blasting apparatus for remotely activating and modulating flow of abrasive blasting material

An abrasive blasting apparatus comprising:

• a blast pot storing abrasive blasting media and having a blast media outlet;
• a pneumatically actuated abrasive blast media valve fluidly connected to said blast media outlet of said blast pot;
• a source of pressurized gas fluidly connected to said abrasive blast media valve;
• a proportional air valve in fluid communication with said blast media valve and said source of pressurized air upstream of said blast media valve, said proportional air valve providing variable gas pressure to said abrasive blast media valve;
• a hose having a blast nozzle at a distal end thereof, said hose fluidly connecting said blast media valve to said blast nozzle located downstream of said blast media valve, said blast media valve provided to control the passage of the blasting material through the nozzle;
• a main control unit fluidly connected to said blast media valve and said proportional air valve;
• said blast media valve comprising:
• a housing having a blasting media intake fluidly connected to said blast pot and a blasting media exit;
• a plunger disposed within said housing;
• a sleeve disposed within said housing between said housing and said plunger;
• a blast media port in said sleeve and provided to receive a blast media;
• a casing fixedly connected to said housing;
• a piston disposed within said casing and connected to said plunger;
• and
• a base member fixedly connected to said housing, said base member being in fluid communication with said blast media port;
• and
• said plunger being movable by said piston with respect to said blast media port between a fully closed position to a fully open position.