For sale is a Hako Minuteman Industrial Air Operated Pneumatic Vacuum. Comes from a factory that was closed down due to business relocation. See http://www.minutemanintl.com/sites/default/fil es/files/literature/705%20Series%20Air%20Vacuums.pdf. General Overview No moving parts to replace No motors or switches to replace Silenced down to low 80 dba Available in stainless steel or electrostatically applied painted tanks Uses compressed air and the venturi principle to create a vacuum of exceptionally high flow and high static lift Ideal for areas where standard voltage is not available Capable of lifting or moving an extensive variety of solid or liquid materials Large range of tank sizes, filter arrangements, venturi and hose sizes, tools & attachments for wet/dry pick up Optional HEPA filters available on select models