Components



Free jet sandblasting machines produced by Fevi SRL are powered by compressed air and are composed of:

  1. Pressure tanks for housing abrasives
  2. Abrasive transport tubing
  3. Sandblasting nozzles
  4. Control and safety systems

 

1. Pressure tanks for housing abrasives


The sandblaster's tank can be of various capacities between 8 and 280 L. The container that houses the abrasive determines the capacity of work by its content level. It is qualified for European certification under the 97/23/EC Pressure Equipment Directive.  
Fevi Srl builds under CE certification no. 1131.

Usually, the following devices are included:
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2. Abrasive transport tubing



The tube is made out of special abrasion-resistant rubber, with a portion between 1/2 and 1/4 , depending on the quantity of abrasive to be drawn into the unit, time, and length, which is usually between 4 and 40-60 meters. In some cases, and for specific types of jobs, it is possible to extend the abrasive tube up to 100-150 m.

This tube is usually connected to a point of the unit with a special quick-connect system to connect to the tank. There is a separate point where the nozzle rests.
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3. Sandblasting nozzles

The sandblasting nozzle,made of particularly hard abrasion-resistant metal, is the component which determines the consumption of compressed air (between 100 and 8,000 L/min at 7 bar). It is held by the nozzle keeper, which is controlled by the user, who also controls the direction of the spray. It can have varying diameters, although it is normally between 1.5 and 12 mm, cylindrical in shape and between 20 and 40 mm in length.Conversely, it can be Venturi-type, between 70 and 150 mm in length.  At equal pressure and power, the speed and extent of the jet vary depending on the diameter and type of nozzle used.
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4. Control and safety systems

The control and safety systems are mainly composed of the remote controller, which allows the user to start and stop the sandblaster.  
This device is usually powered by compressed air or, in some cases (for long distances), by low voltage electricity. It rests near the nozzle , so that it can only be controlled by the user; it also features a lockable safety stop system.

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