Rancilio drain valve nut 23227009

Function of the drain valve

The drain (discharge) valve is used for controlled release of water, steam or pressure from the coffee machine's circuit. It opens and closes the flow so that maintenance, boiler descaling or safe relief of excess pressure can be carried out. It is part of the system that protects the machine from overpressure and allows regular cleaning.

Typical signs of wear

A worn or damaged valve shows itself through leaking water or steam even outside the drain cycle, stiff or, on the contrary, loose operation, insufficient sealing after closing, or complete blockage of flow. Hissing, dripping under the machine, or slow venting of the boiler may also occur.

Why timely replacement pays off

A leaking or stuck valve increases the risk of pressure loss, damage to surrounding components from moisture, and can prevent proper descaling. Timely replacement prevents larger faults in the pressure system and keeps the machine running safely.

How to choose the right part

• Check compatibility in the product table for your specific model.
• Check whether it is a complete valve assembly or just a part of it.

Compatible with

• CLASSE-10 (2008-)
• MILLENIUM
• CLASSE-10-RE (20191204-)
• CLASSE-10-RE-07 (20210420-)
• CLASSE10 (200401-)
• Z11 (REV.1)
• CLASSE-9-RE (20160923-)
• CLASSE-9-RE (20201119-)