DOUBLE-SEAT VALVE (VERSIONS) Russian patent published in 2010 - IPC F16K1/44 

FIELD: machine building.

SUBSTANCE: group of inventions refers to pipeline accessories, particularly to double-seat valves and is designed for implementation at various branches of industry. The double-seat valve consists of a case. Two seats and a plunger interacting with them are instaleed in the case. The plunger consists of a spindle ad two profiled disks. One of the seats is spring loaded with flexible elements and performs limited axial travels between the case and a stop. Here is disclosed another version of the double-seat valve design. According to this version one disk of the double-seat valve is spring-loaded with flexible elements and performs limited axial travels between the stops of the spindle.

EFFECT: facilitating pressure-tight conjugation of plunger with both seats of double-seat valve simultaneously and compensation of change of linear dimensions of valve components at their heat expansion.

2 cl, 16 dwg