Having problems with your Karcher PSI Electric Pressure Washer ?

Karcher pistol gun has broken

\015 The pistol gun started leaking and there was no pressure. I took the pistol srayer apart and found that the tube inside had cracked. I put a second pistol gun on and within hours the gun had also broken. Is there a pressure relief valve that can be adjusted?\015\012Karcher 650M\015

Answers :

Make sure you DO NOT have a check valve (this is what stops your hose running when you disconnect from the hozelock fitting) in your hose pipe system, This will send a shockwave through the pressure washer and destroy the fitting you mentioned. They can be easily removed.
I do not think there is a pressure release valve , sounds like the plastic inside the pistol has become brittle and has failed under pressure , you dont say how old the pistols are ? and if you run strong detergents through them .
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