Vac-U-Max 30- and 55-gal air-powered vacuums — Models 40008, 40012 and 40013 — feature completely grounded and bonded designs to meet NFPA 77 static electricity requirements. The air-powered vacuums are intrinsically safe systems and do not use electricity or generate any heat from operation. The vacuums feature pulse filter cleaning with air reservoirs, pulse buttons, regulators and gauges.
(800) 822-8629 
www.vac-u-max.com