Vapor The VTS36-500 is a compact vapor scrubber system designed for vacuum truck emissions. Designed primarily for stretched vacuum trucks or to be placed on a small trailer/truck, vapors enter liquid scrubber first where they are removed up to 98.5%. Remaining vapors are polished through the twin carbon beds. Each carbon bed has large temperature gauges and has easy-dump valves which make carbon removal simple. No cyclone or extractor is necessary with this system. For safety, a water-purge system is included which in the case of thermal event, a pump will spray 30 gallons of water to both beds to help avoid a fire. Overall vapor removal efficiency of this system is 99%+.