#pressurewasher #pumps #interpump
In this video, I will show you how to convert an integralstyle unloader to a flowsensitive Interpump K1 external type.
This Annovi Reverberi pressure washer pump has an integral unloader valve; this utilises a loop bypass trapped pressure system, often leading to overheating and premature wear and failure of components.
This style of unloader retains the working pressure inside the hose, trigger and associated components, which makes the highpressure hose rigid and more challenging to manage.
You eliminate all these issues by switching to an external flowsensitive unloader valve. When releasing the trigger, water is diverted out of a bypass port. This can be refed into a water tank or diverted to a drain.
This type of valve also means fresh, cold water is circulating through the pump; thus, there is no risk of overheating.

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