Breville Leaking Steam Valve

Breville espresso machine steam wand drips continuously even when the steam valve is closed.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Worn steam valve seals, Scale buildup in valve, Damaged steam tap shaft, Loose valve nut

How to Fix / Troubleshooting

Safety: Steam and hot water can cause burns. Allow the machine to cool and depressurize before service.

Steps:

  • Open the steam valve fully for a few seconds to flush any debris, then close it firmly.
  • If dripping continues, remove the steam knob and access the steam valve body.
  • Tighten the valve packing nut slightly to compress internal seals (do not overtighten).
  • If still leaking, disassemble the valve (if serviceable), descale internal parts, and replace O-rings and seals.

Resolution: Replace the entire steam valve assembly if seals are worn or the body is damaged and cannot be serviced.

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Repair Difficulty

Medium 3/5

Required Part

Steam Valve Assembly
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