Repairing a Dripping Hot Water Spout on the Breville Dual Boiler (BES920)

Repairing a Dripping Hot Water Spout on the Breville Dual Boiler (BES920)

If your Breville Dual Boiler (BES920) is dripping from the hot water spout, even when the valve is closed, it’s most likely due to worn O-rings inside the needle valve assembly — not the solenoid or boiler components. Over time, the two internal O-rings inside the valve body can harden, crack, or flatten, allowing hot water to seep past the valve seat and out the spout.

In this guide, I’ll show you how to access the needle valve, replace the O-rings with the correct parts, and reassemble the unit to restore a proper seal. It’s a straightforward fix for anyone comfortable opening up their machine, and far cheaper than replacing the entire valve or ignoring the issue until it worsens.

With a few tools, some patience, and a replacement O-ring kit on hand, you can get your machine back to working order in under an hour.

Order Hot Water Valve Seal Kit
Click here to order this part

Tools You'll Need:

  • Phillips screwdriver
  • T20 Torx driver
  • Small pliers
  • 14mm spanner
  • Adjustable Spanner

Repair Time: Approx 45 minutes

 

Step-by-Step:

Step 1: Unplug the machine and let it cool fully.

Step 2: Remove the two phillips screws underneath the front panel:
Step 2 image

Step 3 - Remove the two torx screws at the back:
Step 3 image

Step 4 - Lift the lid

Step 5 - Tightly grip the knob while pulling to release the knob. If yours it too tight, then try using a rubber glove to aid grip:

Step 6 - Take out the philips screw from inside:

Step 7 - Remove the two screws holding the microswitch in place:

Step 8 - You can now use a flat-bladed screwdriver to release the remaining part of the knob:

Step 9 - This will now give you access to the two screws holding the valve in place:

Step 10 - Using pliers, remove the the two clips holding the hoses in:

Step 11 - Take out the final two screws to release the valve:

Step 12 - Using large pliers or a socket spanner, remove the retaining nut:

Step 13 -Take out the rest of the parts and note their order:

Step 14 - Hold the valve with an adjustable spanner to aid further dissasembly of the valve:

Step 15 - You should now be able to unscrew the internal "needle" to access the two o-rings:

Step 16 - Cut off the worn o-rings and slide the new ones into place. Apply some grease and reassemble the valve to complete the repair.

 

⚠️ Warning: DIY repairs carry risk. Do not attempt if unsure. See full disclaimer.