| 摘要 |
FIELD: construction. ^ SUBSTANCE: valve is intended for ventilation of residential and civil buildings. Proposed device consists of the following components: channel (nozzle), porous insulator arranged in nozzle, inner insert, fixture, inner head made of controlled gate (choke), filter and decorative cover with holes for air passage, and also external grid with rod (pin) rigidly fixed on it at inner side or collapsible external grid made of two parts hingedly fixed to each other, with rod (pin) hingedly fixed on one of parts at inner side. ^ EFFECT: device makes it possible to assemble external grid in fast, safe and cost-efficient manner, no matter what the height elevation of assembly is and how distant windows or other openings are in external walls of buildings from area of installation. ^ 3 cl, 18 dwg |
