Wiedemann Rotary Knob for ECM – Walnut
Wood in your hand as you open the valve – warm, grained, and each piece unique.
The Wiedemann rotary knob made of walnut with a 7-mm internal square made of stainless steel, for ECM machines.
What makes the rotary knob special
The rotary knob replaces the valve wheel on your ECM and gives the machine a personal, warm touch. Walnut brings a dark, warm tone. At its core is a 7-mm internal square profile made of stainless steel, which fits the valve shaft. Since wood is a natural material, each grain is unique.
We partner with ECM, and a wooden rotary knob adds your personal touch to the machine. Our opinion is one of many.
At a glance
| Type |
Wooden rotary knob (valve wheel) |
| Wood Type |
Walnut |
| Profile |
7-mm internal square, stainless steel |
| Suitable for |
ECM machines with 7-mm square valve shaft |
Who it's for
For everyone with an ECM who wants to replace their steam or hot water knob with a warm wooden wheel.
What to combine it with
The rotary knob is on your ECM: you can find the machines in our espresso machines, and our consultation tool will help you make the right choice.
For other barista accessories: the Normcore Collection is affordable and precise, while the Weber Workshops Collection showcases particularly finely crafted items. A matching tamper is also available.
Frequently Asked Questions
What wood is the rotary knob made of?
Walnut – each piece with its own unique grain.
What profile does it have?
A 7-mm internal square made of stainless steel, suitable for the valve shaft of ECM machines.
Does this part fit my device?
Check the model and size using the information above. We'd be happy to compare it with your setup in the showroom or by email.
Can I see the part before purchasing it in person?
Absolutely. You can experience it live in our showrooms in Bern (Gerberngasse 44) and Zurich (Hagenholzstrasse 50b). We deliver online within 2–4 business days, throughout Switzerland and to Liechtenstein.
Tip from our coffee roastery
Fresh coffee makes all the difference. Our Cozy Chocolate and Nutty Delight bring full-bodied chocolate and nutty notes. For maximum body without acidity, try Very Nutty, and for a fruity experience, Wild Peach. This is our recommendation – one of many.
