Steam wand tube for Delonghi Classic coffee machine EM400 EM450 AS00007639

This original Delonghi nozzle, identified by the code AS00007639, is essential for steam delivery from your coffee machine. It is the steam outlet tube, specifically designed to ensure optimal steam delivery necessary for frothing milk and preparing excellent cappuccinos or for dispensing hot water. This part ensures resistance to high temperatures and durability over time. Replacing a damaged or clogged lance is the first step to restoring your appliance's efficiency as if it were new.

Technical Specifications
- Original Delonghi spare part
- Country of manufacture: Made in China
- Material: steel, aluminum, plastic, and silicone
- Color: silver and black
- Includes: lance with sleeve, Hotmilk Cappuccino cover tube, connector, silicone nozzle, and mounting support

Generic Operation
What is the purpose of the steam outlet tube in a coffee machine? In simple terms, this spare part is the channel that directs the steam created by the boiler or thermoblock to the outside. Its main function is to allow milk emulsification, creating that dense cream typical of coffee shops, or to dispense boiling water for tea and infusions.

Symptoms and Diagnostics (Q&A)
QUESTION: Why is the steam lance leaking water or steam?
ANSWER: Often the cause is wear of the internal o-ring seals or a micro-crack in the tube itself due to heat.

QUESTION: The steam is coming out with low pressure, what is happening?
ANSWER: There may be a blockage caused by limescale or dry milk residues inside the duct.

QUESTION: Why is my coffee machine no longer frothing milk?
ANSWER: If the tube is intact, the problem may be a partially clogged dispensing hole that prevents proper mixing of air and steam. Check for any build-up.

QUESTION: Why is no steam coming from my coffee machine?
ANSWER: The problem could be caused by various factors. First, ensure that the steam lance is free from limescale or milk residue blockages, then check that it reaches the set temperature for steam and that the tap is completely free for dispensing from the steam outlet channel. Usually, a descaling or cleaning of residues resolves 90% of the issues. In our shop, you can find both the EcoDecalk descaler and the Eco MultiClean solution for cleaning milk residues.

Maintenance Tips and Lifespan
To maximize the lifespan of your steam tube AS00007639 and avoid premature breakage, it is crucial to follow some simple rules. The number one enemy is milk build-up: this, when dried, creates hard plugs that are difficult to remove and promotes bacterial growth. We recommend purging the tube by dispensing steam for 2 seconds immediately after each use and wiping it with a damp cloth. Also, regularly perform descaling of the coffee machine, as limescale can accumulate internally, reducing the steam passage diameter and increasing internal pressure, potentially causing breakage or completely blocking the dispensing tap.

Installation Instructions
Installing this spare part requires a fair amount of manual skill. Before starting, ensure that the machine is turned off, unplugged, and completely cool to avoid burns. Remove the movable parts (cover, tank, drip tray, etc.), the outer cover, and the steam knob. Generally, the tube is secured with a screw fitting or a retaining clip. Unscrew or detach the old tube, being careful not to lose any seals, clean the housing seat, and insert the new spare part AS00007639, ensuring it is securely in place. Perform a steam dispensing test before reassembling the outer casings.

Not exactly the item you are interested in?
In addition to the tube, we have a wide range of original Delonghi accessories and spare parts available in our catalog. If you cannot find what you need through independent navigation, feel free to contact us anytime; we will respond promptly even during holidays and weekends. And if a product is not available, we will do our best to find and order it specifically for you. You can find much more with us beyond spare parts for Delonghi coffee machines!

Compatibility (is it suitable for my product?)
This tube is certified for use on the following Delonghi coffee machine models. Carefully check the label on your appliance to avoid compatibility issues. If in doubt, contact us:

Classic
EM450.M
EM450J-M
EM450J-W
EM450M

Classic Extension
EM400M