... cubic to 50cubic tandem/tri- axles water tanker semi-trailer. --------- Description:: water tank pipes with the function of front ... self-discharge valve so the tanker can self-discharge water without water pump, the tanker also equipped with fire coupling, ... Liquid Tanker, Bitumen Tanker; Refuse Collector, Scavenger Truck, Roadway Flusher, Road Sweeper, High Pressure Jetting; Trailer & Tow Truck; semi ...