All insualtor washer systems are composed of the following basic items: a water tank, a water pump, a water hose and reel, a wash gun, a fuel tank and a power source. Several of these components do vary, for example the smallest mobile washing unit has 950 liter water tank. Water tanks can be as large as 15,000 liters (if the chassis can support the weight). All of the tanks are constructed of stainless steel and can be supplied with up to three hose reels with either 3/4″ or 1″ diameter hose. Nozzle sizes available vary with both 1/4 and 5/16 available. Although 1/4 is the standard nozzle size, 5/16 is far more effective in windy conditions. The fuel tank is typically about has 30 US gallon (113.562 Liters) capacity, and the independent power source can be either gasoline or diesel. The components can be installed on either a skid or a trailer.