воздушная пробка
1) воздушная пробка 2) [электроника, холодильная техника] воздушный шлюз, [холодильная техника] тамбур
noun 1. an intermediate chamber with two airtight doors or openings to permit passage between two dissimilar spaces (as two places of unequal atmospheric pressure) 2. a stoppage of flow caused by air being in a part where liquid ought to circulate