anti-gluck device - примочка для промышленной канистры, but what exactly?

[steve!]

Контекст:
The standard UN approved packaging for organic peroxides is the 30 litres HDPE can. It looks like a simple can, but it has many features like anti-gluck device and ventilation cap just to mention two which make it a convenient packaging for transport, storage, emptying and disposal.

[серёга]

consider противотоксикоманский дивайс)))

[Jbravo]

Or противоглючный дивайс

[steve!]

appreciate your humor but look, its darn serious! :)

[nephew]

если я не ошибаюсь, это вытяжная горловина, но спросите на немецком форуме