Pressure Washers, Direct vs. Belt & Hot vs. Cold

Direct Drive Pumps

• Direct drive pumps are directly connected to the power platform (motor or engine) and consequently turn the same speed. This is referred to as revolutions per minute (rpm’s)

• The power platform transfers heat directly to the pump through the shaft.

• Because direct drive pumps turn more rpms they increase the friction which in turn causes faster wear of the components.

• Direct drive pumps are usually recommended in applications where usage is less than 20hrs per week.

Belt Drive Pumps

• Belt drive pumps typically turn at much slower rpms and have a longer piston stroke which exponentially reduces friction.

• Belt drive pumps are connected to the power platform with pulley’s and belts thus eliminating heat transfer from the power platform.

• Belt drive pumps typically have larger oil reservoirs to increase pump life. • Belt drive pump assemblies last up to times longer.

Hot vs Cold Water.

Think about a spaghetti dish in a dishwasher. With cold water the grease gets spread to every surface. With hot water the grease is dissolved but leaves a film. With hot water and detergent the spaghetti dish comes out squeaky clean. With hot water, detergent and rinse agent the dish comes out squeaky clean and spot free. • Hot water has more molecular energy than cold water

• For every 13 degrees above 120 degrees water molecules double their molecular energy.

• A pressure washer typically heats the water to between 180 and 200 degrees • At 185 degrees, hot water is 5 times more effective than cold water.

• 185 degrees water will reduce surface tension and uses the waters natural energy to become a molecular scrubber.

• Hot water requires 75% less chemical than cold water

• Hot water requires 80% less effort to achieve the same results as cold water.

• Less effort means less time

• Less time means labor savings.

• Hot water pressure washers pay for themselves through ROI

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