Sealed at the flowmeter, shot after shot
On a volumetric machine, the amount in the cup depends on the flowmeter. This cover closes its housing on the GB5 and Linea PB: it holds the pressure, presses the seal onto its seat and can be removed for cleaning. An inconspicuous part that sits over a group of components you handle regularly in a business.
A tired cover shows itself through a trace of moisture on the group cover or below it. Because the spot is warm during operation, small amounts of water evaporate immediately and leave a white rim – it reliably shows you where water is escaping, even if you see nothing dripping at the moment.
Descale first, then replace
There is almost always limescale on the sealing seat before a part is really worn. So descale and clean thoroughly first; you will find the products for this under Machine and grinder cleaning. If the spot stays wet afterwards or the contact surface is damaged, a new cover is justified.
When it is due
Limescale rim or damp spot on the flowmeter housing. The cover only seals with excessive tightening. The contact surface is scratched or worn. A thread has given way. Or the unit is opened for servicing and you replace the cover and seal as planned.
At a glance
| Type |
Cover for the flowmeter housing |
| Installation location |
Water path to the brew group, inside the machine |
| Fits |
La Marzocco GB5 and Linea PB. Send us the serial number and we will check the fit for your machine version. |
| Scope of delivery |
1 cover. No complete flowmeter, no seal. |
| Part number |
LAD070/GC.R |
| Installation |
Installation by a specialist recommended |
| Brand |
La Marzocco |
Important for installation
The cover closes a pressurised point inside the machine. We do not provide step-by-step instructions for this. The machine must be depressurised and cooled down, the sealing surface clean and the tightening done with a sensitive hand. Have a specialist do it or bring the machine to our workshop.
Who it is for
For businesses with a GB5 or Linea PB that is wet at the flowmeter, and for technicians who consistently renew the sealing points when overhauling a volumetric machine.
What goes with it
The parts for this series are listed under La Marzocco Linea PB spare parts. Directly related are the flowmeter O-ring, for the older design the flowmeter cover old version and in the same area the complete AV group cover. All original spare parts under Original spare parts.
Our routine from Bern and Zurich, explicitly ours and not a manufacturer specification: on volumetric machines, after every intervention on the flowmeter we weigh three shots per group and note the grams on a strip of tape inside the base. When someone says months later that the group is running short, you have a number instead of a guess. For weighing we use Nutty Delight or Cozy Chocolate, and for milk drinks Very Nutty. More under Coffee beans.
Returns excluded
Original spare parts are excluded from exchange and return. They are procured specifically for each order and cannot be resold after installation or a test fitting on the machine. So before ordering, check the model, year of manufacture and serial number of your machine – or drop us a short message and we will clarify the fit together. Your rights in the event of defective goods remain unaffected.
Frequently asked questions
Is the flowmeter itself included?
No, only the cover. The measuring unit is a separate component and is not included.
Does the cover fit the GB5 and Linea PB?
We list part number LAD070/GC.R for both series. Because there are different machine versions, we are happy to check beforehand using the serial number.
Do I need a new seal as well?
As a rule, yes. We recommend ordering the matching O-ring at the same time, because the old seal rarely seals cleanly again once it has been opened.
Why does the spot stay wet even though everything is new?
Then the contact surface on the housing itself is often damaged or the tightening is uneven. We look at that on the machine rather than continuing to swap parts.
Can I collect the part from your showroom?
Yes. Bern, Gerberngasse 44 and Zurich, Hagenholzstrasse 50b. Just let us know and it will be ready for you.
Questions about fit? Write to us at [email protected]. We deliver across Switzerland and to Liechtenstein in 2-4 working days.
