High-Pressure Washers & Surface Cleaners

Why should you avoid leaving a pressure washer running in bypass mode (trigger closed) for more than a short time?

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 Correct IncorrectThe water trapped in the recirculating bypass loop continuously absorbs heat from the pump pistons, and as it overheats it can damage rubber seals and check valves.

Why should you avoid leaving a pressure washer running in bypass mode (trigger closed) for more than a short time?

• The water will turn acidic
• Trapped recirculating water overheats rapidly from piston friction, melting pump packings and ceramic seals
• The gas engine will run backwards
• The pressure hose will expand into a balloon