Ruwac’s portable pneumatic explosion proof vacuum cleaners are designed especially for combustible dust and hazardous locations. While there are no certification standards for pneumatic explosion proof vacuums, Ruwac’s Air Powered vacuums are self-certified to UL, CSA and ATEX standards that apply for electric machines (with the only difference in construction being the replacement of the electric explosion proof vacuum motor and switch with our stainless steel venturi system). Our air powered explosion proof vacuums are the safest alternative power explosion proof vacuum cleaner for use in Class I and Class II environments.