SMH DCU 150 - 3 Stage Decontamination Trailer. The SMH DCU 150 is the lightest of our range of mobile decontamination units. At only 720 kg, the standard unit comes with a built-in generator and water tanks. The 3 Stage DCU is also fitted with a pump driven filter system to take away and filter waste water. It can be fully self-contained when the fresh water storage tank is used in...