HEAT-RESISTANT GATE VALVE Russian patent published in 2014 - IPC F16K3/02 F16K3/30 

FIELD: machine building.

SUBSTANCE: heat-resistant gate valve contains body, gate with throughput hole, bushing with jackets and seals installed in sockets made in body of the input and output nozzles, rod jointed with gate, gland packing, cover. Sockets have thin wall sleeves with external ring and internal support shoulders. Bushings and jackets and seals are installed in the sleeves ensuring end face contact between jackets and its internal support shoulder, and between bushing and end face of the gate. The gate with rod are connected by articulated joint including pin with spherical surface on gate, and ball at rod lower end connected with each other via the adapter with counter spherical surface provided with captive nut. Sleeves in sockets are installed creating the diametrical and end face clearances with case.

EFFECT: free change of gate position relatively to bushings and case depending on accepted differential pressure on the gate with these loads redistribution by bushings, seals and sleeves material.

3 dwg