RADIATOR VALVE Russian patent published in 1999 - IPC

FIELD: radiator valves for control of water flow rate. SUBSTANCE: radiator valve has body, inlet branch pipe, seat and shut-off member moving coaxially. Shut-off member forms first throttling zone together with seat. Shut-off member is loaded with spring in direction of opening. Swivel cylindrical bush has profiled end surface and is loaded with spring towards circular surface embracing the seat; it forms second throttling zone in form of slit between circular surface and end surface of bush; bush closes outlet hole in wall embracing the bush. Slit is formed by circular surface embracing the seat and end surface of bush. Slit is shifted axially relative to end of seat. EFFECT: reduced turbulence and consequently noise. 12 cl, 5 dwg