HEAT-RESISTANT GATE VALVE Russian patent published in 2012 - IPC F16K3/02 F16K3/30 

FIELD: machine building.

SUBSTANCE: heat-resistant gate valve includes body and damper with feedthrough holes, sleeve seats in the housing pockets, which are provided with end and radial seals, stock, packing gland, cover plate and flywheel. At that, sleeve seats are provided with skirts, with radial seals on their outer surfaces, which are installed with possibility of end contact with the housing and sleeve seat; at that, sleeve seats are installed in the housing pockets so that manufacturing clearance is formed between them and the housing, the size of which is accepted equal as to the value to thermal change of transverse sizes of gate vale and linear sizes of sleeve seats. In the gate valve there made is a bore in which a sleeve is installed with possibility of forming the clearance between stock and damper, kinematic connection with lower end of stock connected to it by means of a pin.

EFFECT: invention provides the possibility of sealing the high-temperature medium, and structural elements and seals are maintained, at multiple cycles of opening - closing, heating and cooling of damper, as well as the possibility of supporting optimum contact stresses.

2 dwg