VENTURI BLOWERS Used to ventilate explosive and hazardous vapors or fumes safelyCan be used as blower or exhausterNo moving partsLightweight cast aluminum baseStatic grounding lug is standardOperates on compressed air or steamInduction ratios upto 40:1Accept flexible duct on diffuser endOperating efficiency depends on compressed air volume and pressure BL - 1200 Venturi Blower Overall Length30.50″ NPT Size 1/2″ Diameter of Base7.31″Bolt Circle Diameter 6.56″ Diameter Top of Horn7.0″Base Slot Diameter 0.4″ BL - 2900 Venturi Blower Overall Length 44.25″ NPT Size 1″ Diameter of Base11.25″Bolt Circle Diameter 10.50″ Diameter Top of Horn12.5″Base Slot Diameter 0.4″ BL - 4100 Venturi Blower Overall Length 46.06″ NPT Size 1″ Diameter of Base14.37″Bolt Circle Diameter 13.62″ Diameter Top of Horn14.25″Base Slot Diameter 0.5″