The direct pressure type (sometimes called a pressure type) supplies compresssed air into a pressure tank, which contains abrasive media, and injects the media at a stroke after increasing the pressure. NICCHU’s DM type and *Petit-blasting PD type belong in this category. The strongest injection power among air blasting machines is applied for processing of hard products or the blowing off abrasive media.

However, the machine is more expansive than the suction type because of the complicated mechanism After injecting abrasive media from the presure tank, the pressure in the tank must be oncereleased. The pressure is released before refilling with abrasive media. If you need continuous injection, prepare two tanks to fill the abrasive media into one tank while the other injects the media.