Valve element (7) has first surface (11) interacting with first seat (5), and second surface (12) interacting with second seat (6). Said first surface (11) differs from said second surface (12). One of said surfaces (11, 12) is base surface interacting with said base valve seat. ...
FIELD: machine building.;SUBSTANCE: built-in valve (5), namely for sectional radiator (1), includes housing (7), (8), seat (9) of valve, which is arranged inside housing (7, 8), and gate valve (10) interacting with seat (9). At least one inlet channel (15) is located on the...