The small stop that sets the steam knob's travel
The stop screw limits how far the steam rotary knob of the KB90 can be turned. It is tiny and inexpensive, yet it decides whether the valve can be operated cleanly. In this version it is accessible from the front.
If it is missing or the thread is stripped, the knob turns past its intended point. The team then opens it too far, the stop inside the valve takes the force, and at some point the screw is no longer the problem. The part number is I.1.135.
When it is due
- The steam knob turns past its usual point.
- The screw is missing, loose or stripped.
- The knob sits crooked or wobbles.
- After a valve service, the small part is missing from the bag.
At a glance
| Type |
Stop screw, small part |
| Installation location |
On the steam rotary knob, access from the front |
| Fits |
La Marzocco KB90 |
| Scope of delivery |
One stop screw |
| Part number |
I.1.135 |
| Version |
Manufacturer's standard version |
| Brand |
La Marzocco |
Who it is for
For businesses where the KB90 steam knob no longer stops cleanly, and for technicians who prefer to keep small parts like this in their case in duplicate.
What goes with it
From our workshop in Bern and Zurich
When we take a steam knob apart, all the small parts go into a shallow tray rather than onto the counter. Otherwise, these are exactly the screws you end up looking for at the end of the day. That is our routine, not a manufacturer requirement. We finish the service with a cappuccino made with Cozy Chocolate – more in our coffee beans.
Returns excluded
Original spare parts are excluded from exchange and return. They are sourced specifically for each order and cannot be resold once they have been installed or test-fitted on a machine. So please check the model, year of manufacture and serial number of your machine before ordering – or drop us a quick message and we will check the fit together. Your rights in the event of defective goods remain unaffected.
How many pieces are included?
One screw is supplied.
Does it also fit a GB5?
Part number I.1.135 is listed for the KB90. Send us the serial number and we will check the fit.
Do I need special tools?
Usually not. If you are unsure, send us a quick message about what you have in front of you.
How long does delivery take?
Usually 2-4 working days across Switzerland and to Liechtenstein.
Can I see the part at your premises?
Yes. We are in Bern at Gerberngasse 44 and in Zurich at Hagenholzstrasse 50b.
Unsure about the fit? Write to us at [email protected]. We deliver across Switzerland and to Liechtenstein in 2-4 working days.
