Continental Trade Sp. z o. o.


Rectangular level indicator with welding ends


The ACI filling level sight glass Type 411 is a sight glass holder especially for borosilicate glass panels according to DIN 7081. The fully enclosed casing is fitted with drainage plugs, as well as welded supports on the rear, and can be installed directly on your container wall.

The DIN 7081 borosilicate glass used is resistant to most acids and many other chemicals. If even this tried and tested industrial glass is not adequate for your requirements, it is possible instead to use high-performance glass based on quartz or sapphire.

The standard glass according to DIN 7081 is available in the “Reflex” and “Transparent” variants. The transparent viewing panels can be fitted additionally if required with a mica shield to protect the glass surface from increased wear due to aggressive media or high temperatures. For reflex viewing panels, it is not possible to fit a mica layer, but with a colourless, clear medium the internal grooves ensure a significantly more visible meniscus due to the different refraction between the fluid and gaseous phase and therefore a clearer reading of the liquid level.



Base and top frame: 
1.4571; 1.4404, 1.4462, RSt 37-2 / H II


depending on the application

Reflections -or- Transparent glass acc. to DIN 7081

Level Sight Glass Type 411- PN16-40- welding ends Ø 20 x 2,6 operating pressurre max. 35 bar

Nominal size:
170- 930 mm

Nominal pressure:
PN16 or PN40

Temperature: 100 ° C or 243 ° C
depending on the glass and seal selection.

Optional versions are possible.

Take advantage of our 360 degree 3D view for a perfect all-round view of our product.

Watch our animation video, here you can see the structure of our level indicator type 650 perfectly

Download data sheet:

While every attempt has been made to verify the source of the information, no responsibility is accepted for accuracy of data.

Information clause

What personal data are processed and who is their administrator?

When using our services, personal data that we process may be, for example, the IP address of your device, data obtained from cookies or similar mechanisms for recording information in Users' devices, as long as they allow you to identify you. More information about the scope of personal data and cookies can be found in the Cookies policy and in Privacy policy.

Administrator, ie the entity deciding on which personal data will be processed and for what purpose, and in what way, is Continental Trade Sp. z o.o. (hereinafter "Continental Trade" or "We") with its registered office and address in Warsaw at Krasnobrodzka Street 5.

What is the purpose and basis of the processing of your personal data by Continental Trade ?

Continental Trade processes your personal data to enable you to use our services, match the displayed content and ads to your interests, measure quality and effectiveness, improve content and services.

The basis for the processing of personal data is the legitimate interest of Continental Trade. It includes improving services, ensuring their best quality and informing Users about them.

Confirming that you have read this information,   by clicking on "Go to website" or closing this window at the same time you agree that your personal data will be processed in the same way as described here. You can manage your consent, including withdrawal.

Providing personal information is voluntary.

What are your rights to   Continental Trade in terms of processed data?

You can request from Continental Trade: access to data, rectification, deletion, transfer and, in some cases, processing restrictions, and you have the right to object to the processing of your personal data when personal data are processed on the basis of the legitimate interest of the administrator. You have the right to file a complaint regarding the processing of your personal data to the President of the Office of Personal Data Protection.

To whom does Continental Trade share your personal data?

Continental Trade, in principle, does not share your personal data with third parties, except for situations in which Continental Trade has a legal basis, including at the request of authorized entities, or when it is necessary to perform services offered by Continental Trade, e.g. entrepreneurs providing hosting of our services.

How long does Continental Trade store your personal data?

Continental Trade stores Users' personal data only for the time that is necessary to achieve the purposes for which the data was collected and provided that one of the legal grounds described above is up-to-date or when a new ground has appeared, e.g. a law or the need to enforce claims in court proceedings.

Who can you contact for more information on the processing of personal data by Continental Trade?

If you have questions related to the processing of your personal data on websites operated by Continental Trade or would like to report the issue related to the processing of personal data by Continental Trade, you can contact a Continental Trade representative using the contact information:

More information on the protection of your personal data can be found in the Cookie Policy and Security Policy documents published on our website