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High pressure manual sandblasting machine

High pressure Sand blasting cabinets utilizing direct pressure abrasive delivery developed later. These machines use a pressure pot to pneumatically push the abrasive to the nozzle. With direct pressure, the abrasive has no delivery weight so it travels faster and faster inside the abrasive hose until it passes out the nozzle office at a much faster speed than siphon or compressed air quantity to orifice speed. To keep most abrasives from exceeding maximum impact velocity, the pressure on direct pressure machines is reduced by 50%t compared to the siphon delivery method.
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