Vacuum Valve

Function of the vacuum/anti-vacuum valve

This valve is part of the coffee machine's boiler and is responsible for equalizing pressure. As the water in the boiler cools, a vacuum can form which, without this valve, could damage seals or prevent proper water filling. At that moment, the valve opens and lets in air, equalizing the vacuum. The design typically includes a weight that ensures the valve remains closed during normal operation under pressure.

Typical signs of wear

A worn or clogged valve can be recognized by water or steam leaking at its seat, irregular or incomplete boiler filling, or noisy bubbling or hissing during heating. Sometimes pressure fluctuations also occur, affecting the quality of coffee preparation.

Why timely replacement pays off

A leaking valve increases water consumption, can damage surrounding seals, and if neglected for a long time, can cause problems with the boiler's pressure system. Replacement is a simple task that helps prevent more serious repairs.

Selection advice

Before purchasing, check the compatibility of the specific valve in the product table, as dimensions and mounting methods vary between coffee machines.

Compatible with

• SES990
• SES980
• SES920