White tongue is a coating of debris, bacteria and dead cells on your tongue that makes it look white. Although the appearance of white tongue may be alarming, the condition is usually harmless and temporary.
How a pressure washer works. Here's a quick summary of the basic principle: 1  Detergent flows in from a bottle or container through one hose. 2  Cold water flows in from a faucet (tap) through another hose and is filtered on the way in.3  An electric motor or diesel engine powers the washer. Cold water flows in from a faucet (tap) through another hose and is filtered on the way in. 2  An electric motor or diesel engine powers the washer. 3  Powered by the engine or motor, a water pump (impeller) draws in the detergent and water and mixes them together.
Pressure Washer: Water sprays out of the pressure relief valve. If the pressure washer runs for more than 5 minutes when the spray wand isnât in use, the water in the pump often overheats, causing the thermal relief valve to open and discharge hot water onto the ground. When the thermal relief valve opens, cool water enters the pump and cools the system.