HydroFoamer 483 hose end proportioners (48oz) combine automatic dilution with convenient control of where and how solution is applied. The HydroFoamer 483 provides a thick, rich foam for more "cling" time on the surface being cleaned. The HydroFoamer 483 provides an excellent way to apply cleaners/sanitizers/disinfectants at metered dilutions. On and off functions are controlled using a trigger on the spray gun. To rinse, the concentrate container is disconnected via a quick coupler.