The Challenger 43 Series hybrid blower from National Vacuum Equipment is available in the 4307, which moves 560 cfm, and the powerful 4310, which moves 940 cfm. The sound enclosure allows this package to be very compact, taking up only 36 inches of frame space, and makes it extremely quiet to allow for pumping at night in residential areas. The blower doesn’t require oil, and will work at high vacuum levels continuously. It is designed to be easily frame- or top-mounted to accommodate most trucks, and is completely serviceable from within the enclosure. Packages are offered in hydraulic, gearbox or belt drive to work with a variety of transmissions, both manual and automatic. 800/253-5500; www.natvac.com
 


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