What this valve does
This mechanical valve/piston is a functional component used in DeLonghi ESAM full-automatic coffee machines. It regulates the internal movement of water or pressure within the brewing system, helping the machine deliver consistent extraction with each cycle.
Signs it needs replacing
Over time, seals and moving parts inside the valve or piston can wear out, leading to leaks, irregular pressure, unusual noises during operation, or inconsistent coffee output. If you notice any of these issues, the valve or piston may no longer be sealing or moving correctly, and replacement can help restore normal function.
Choosing the right part
Before ordering, please check the compatibility table listed by the product to confirm it matches your specific DeLonghi ESAM model.
Compatible with
- ESAM6700 EX:1 PrimaDonna Avant
- ESAM03.110 EX:1 Magnifica
- ESAM03.110.S EX:1 Esperienza
- ESAM03.120.S EX:1 Magnifica
- ESAM04.110.B Magnifica
- ESAM04.110.S Magnifica
- ESAM04.320.S Magnifica
- ESAM04.350.S Magnifica
+ 23 more compatible models
- ESAM3550.B Pronto Cappuccino
- ESAM3600.S Magnifica Elegance
- ESAM4506 Magnifica
- ESAM5400 EX:1 Perfecta
- ESAM5400.BW Perfecta
- ESAM5400.GD EX:1 Perfecta
- ESAM5400.R EX:1 Perfecta
- ESAM5400.S EX:1 Perfecta
- ESAM5450 EX:1 Perfecta
- ESAM5600 EX:1 Perfecta
- ESAM02.110.SB Magnifica
- ESAM03.105.S Magnifica
- ESAM04.120.S Magnifica
- ESAM3000.B EX:1 Magnifica
- ESAM3200.G EX:1 Magnifica
- ESAM3200.V EX:1 Magnifica
- ESAM3240.O EX:1 Magnifica
- ESAM4000.B EX:1 Magnifica
- ESAM4200.S EX:1 Magnifica
- ESAM2200.S EX:1 S11 CAFFE' VENEZIA
- ESAM2200.S EX:1 CAFFE' VENEZIA
- ESAM2600 EX:1 MAGNIFICA CAFFE' CORSO
- ESAM2600 EX:1 S11 MAGNIFICA CAFFE' CORSO
De’Longhi coffee machine – water leaks into the drip tray
With De’Longhi coffee machines, a common cause of water leaking into the drip tray is a damaged mechanical piston valve. This valve ensures proper water flow during coffee preparation. If the valve is worn, dirty, or mechanically damaged, the water flows into the drip tray instead of the cup.
The problem usually develops gradually – the coffee becomes weaker, less water flows into the cup, and the amount of water in the drip tray increases. This is often the result of long-term use, limescale buildup, or insufficient maintenance of the infuser.
The solution is to replace the mechanical piston valve. After replacement, the valve correctly regulates the water flow again and the coffee machine operates without leaks.

DeLonghi ESAM 3000.B Magnifica disassembling
| Manufacturing company | De’Longhi Appliances S.r.l. |
|---|---|
| Address | Via L. Galvani, 22, 31100 Treviso TV, Italy |













