Pressure amplifiers, also known as pressure multipliers, convert compressed air into high pressure (up to 5075 psi or 350 bar). The output pressure, controlled through a regulator, corresponds to the set air pressure multiplied by the multiplication ratio of the pressure intensifier.

They operate on the same principle as gas boosters but with a significant difference. Air amplifiers do not have a distance piece between air motor and high-pressure gas section. Therefore they are not compatible for use with all gases.

Once the pressure multiplier reaches the pre-set pressure it will automatically stall and maintain the pressure.

They are mainly used to increase compressed air pressure and other inert and not dangerous gases.  It is essential in use with gases to have adequate ventilation in order not to saturate working environment in case of leak from multiplier due to wear of seals.