The HV55 HydroVax wet/dry unit from GapVax is constructed of ASTM A572 grade 50 steel and has a 12.5-cubic-yard debris body and water tank options ranging from 400 to 1,400 gallons. Its positive displacement vacuum pump is rated at 5,250 cfm with 28 inches Hg. Its design prolongs the life of the filter bags and eliminates the threat of material entering the vacuum pump. The tailgate is fully opening with a field-adjustable hinge and dual cylinders, and has four fail-safe, individually adjustable locks that ensure a complete seal. Options include a cold-weather recirculation package, sludge pump, auger-unloading system, body-pressurization system, remote pendants and wireless remotes, high-rail package and stainless steel body. 888/442-7829; www.gapvax.com