When purchasing water pressure washers, most people consider the flow rate less important than pressure and temperature levels. However, the flow rate impacts how powerful the pressure washer is. The flow rate of pressure washers is expressed in GPM (gallons per minute) by measuring the volume of water ejected by the machine in one minute.
Reputable suppliers feature water pressure washers with flow rates ranging from 0.5 GPM to 7 GPM. The higher the water flow, the more powerful the pressure washer. If you need to minimize water use in the cleaning process, choose pressure washers with low flow rates ranging between 0.5 GPM to 2.5 GPM. However, if you need high power for say, industrial applications, choose units with high flow rates above 5 GPM.
To purchase pressure washing equipment with the right water flow rate, consider your cleaning tasks. The flow rate is a good indicator of how much area you can clean in a given time. Generally, cold water pressure washers or even hot water pressure washers with pressure levels of 2000 psi and flow rate of 3 GPM will be capable of cleaning about 8-10 square feet per minute.
Higher flow rates allow you to clean large areas in a short period of time. Within the same time period, a pressure washer with a rating of 3 GPM will be able to clean about 60 percent more area than one having a rating of 2 GPM with the same pressure levels.
Whether you are looking to purchase cold water pressure washers, hot water pressure washers, or steam units, it is important to consider the flow rate. Choose low flow rates for delicate surfaces like automotive exteriors and high flow rates for industrial applications.
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