FIELD: public utilities, improvement of refuse chutes in residential and public buildings both in new and reconstructed housing facilities. SUBSTANCE: refuse chute in residential and public buildings includes shaft with lower end section tied up to body of gate valve shutting it off, fitted with damper kinematically coupled to control handle and low- melting point lock. Refuse chute is equipped with branch pipe telescopically coupled to end section and made fast to body of gate valve and with additional damper located in pocket made in body of gate valve on ribs mounted on axle carrying paired torsion spring, axle being suspended from eyelets fixed in body of gate valve with adjustment of fitting of additional damper to branch pipe. Low-melting point lock is mounted in pocket of gate valve for interaction with additional damper. EFFECT: development of simple in design, reliable in operation and non-expensive facility preventing propagation of smoke over stories of building if household rubbish in refuse collecting chamber catches fire. 3 dwg
