BREVILLE DUAL BOILER SES & BES900/BES920 SURVIVAL / SERVICE KIT (120v 240v)

The all-in-one service and repair kit for Breville / Sage Dual Boiler BES900 and BES920 machines.

If your machine has weak pressure, buzzing solenoid issues, leaking seals, steam or hot water drips, heating faults, 3 beeps of death, or a steam boiler that is not filling, this is the most complete starting point in the store.

This kit is designed for owners who want to carry out a major service or cover the most common repair jobs in one purchase, rather than trying to guess which small parts to order one by one.

Fits

• Breville BES900 / BES920
• Sage Dual Boiler equivalents
• 120v and 240v versions

This Kit Is Best For

• Machines with multiple faults or an unknown fault history
• A full strip-down service where you want the common wear items on hand
• Buyers who want to reduce downtime and avoid placing several separate orders

Common Symptoms This Kit Helps Fix

• Loss of pre-infusion
• Buzzing or faulty solenoid behaviour
• Weak pressure
• Leaking seals
• Overheating or underheating
• Dripping steam wand
• Dripping hot water tap
• Steam boiler not filling
• Broken top water lid latch

What Is Included

Premium O-ring Service Kit

• 6 x genuine OEM Viton O-rings for high-temperature steam circuit connections
• 12 x general-purpose silicone O-rings for brew circuit connections
• 5 x large O-rings for thermal and water level probes
• 1 x 10 g tube of food-grade silicone grease
• 1 x vacuum valve O-ring
• 1 x spare hose clip

Steam Valve Service Kit

Full seal set for the Dual Boiler steam valve to fix most leaking or dripping issues.

Important: the 008 O-ring is HNBR for high-friction use. Do not substitute cheap silicone O-rings in this position.

Solenoid Service Kit

Replacement solenoid piston plus seals for Dual Boilers with OLAB-branded coffee solenoids. Useful for buzzing and dispensing issues.

Triac Repair Kit

• 2 x replacement triacs
• 1 x opto isolator

This covers the vast majority of triac board faults on the Dual Boiler and is especially useful when heating faults were caused by leaking O-rings.

Pump Service Kit

For weak pressure or loss of pre-infusion on coffee pumps (EP5 / EFP5 / post-2021 EFM) and steam pumps (NMEHP).

Thermal Fuse and Boiler Protection Parts

Includes both fuse types, a steam boiler thermal switch, locking connectors, and spare insulation tubing so you are covered if the machine has suffered a more serious heating failure.

Other Included Parts

• Replacement lid latch
• 2 x hot water tap seals
• 1 x group seal
• Cable management / repair connectors

Important Before You Buy

If you are planning a descale or a preventative service, I strongly recommend adding the Steam Probe Set. Re-using old probes is one of the most common reasons these machines fail after descaling.

If you are not sure whether this full kit is the right purchase, message before ordering and I can usually point you toward the correct repair path.

Useful Videos

• Triac board repair video
• Pump service video
• Steam valve / thermal parts related video
• BrevTech YouTube channel

DIY Warning

This product is intended for experienced users. Electrical repairs carry risk. Use a qualified technician if you are unsure. Full disclaimer: brevtech.store/pages/disclaimer