Expansion chamber for DeLonghi PrimaDonna Elite coffee machines

What is the valve expansion chamber

The expansion chamber is a component of the drain or discharge valve in a coffee machine. Its role is to capture and direct the pressure of steam or hot water as it is released from the circuit, so that the energy is dissipated smoothly and without shocks to the rest of the system.

When the part stops doing its job

• Water or steam leaking outside the intended path
• Unusual noise or hissing during venting
• Pressure fluctuations in the circuit and unstable valve operation
• Visible deformation, cracks or deposits on the chamber

Why timely replacement pays off

A damaged or clogged expansion chamber increases the load on the valve and can cause premature wear or failure. A steam or water leak also reduces brewing performance and can lead to error messages on the coffee machine.

Choosing the right part

Before ordering, check compatibility with your coffee machine model in the product table, as the shape and dimensions of the chamber vary between valve types.

Compatible with

• ECAM650.55.MS PrimaDonna Elite
• ECAM650.75.MS PrimaDonna Elite
• ECAM656.55.MS PrimaDonna Elite
• ECAM656.75.MS PrimaDonna Elite
• ECAM656.85.MS PrimaDonna Elite
• ECAM656.85.MS EX:1 PrimaDonna Elite
• ECAM650.85.MS PrimaDonna Elite