Pressure washers with detergent tank

 

— the sink has its own tank for chemical detergents used in washing with foam. Note that in this case we are not talking about a foam gun nozzle (see "Nozzles"), but about a tank installed in the sink body — foam can be obtained from such a tank regardless of the installed nozzle. On the other hand, the quality of the foam is somewhat lower than when using a specialized nozzle, so some models of mini-washers have both a tank and a foam gun nozzle in the kit.