The Ring-O-Matic 550 dual-pump combination jetter and vacuum excavator offers the advantages of a dedicated combination jetter/vacuum truck in a compact trailer unit. It jets and vacuums sewer lines up to 20 inches in diameter in spaces too confined for stand-alone jetters and vacuum excavators, or a carrier-mounted combo rig. Powered by an 81 hp CAT turbo diesel, the machine has a 1,000 cfm blower and can deliver 27 gpm at 2,700 psi up to 400 feet with 3/4-inch jetter hose. Its trailer axles are rated to 16,000 pounds to allow the 550-gallon spoils tank and 500-gallon freshwater tank to be towed by a suitably equipped 3/4- or 1-ton truck.

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