FLUID VALVE HAVING ENCLOSED SEALS (OPTIONS) Russian patent published in 2018 - IPC F16K1/226 F16K25/00 

FIELD: machine building.

SUBSTANCE: group of inventions relates to a fluid valve having seals (variants). Said valve contains: a movable flow regulating member disposed between the inlet and the outlet of the fluid flow passageway of the fluid valve. Said valve contains: a retainer is detachably connected to the body of the flow control member. In this case, the retainer and the flow control member are configured to form a sealing cavity when the retainer is coupled to the flow control member. Said valve includes a seal located inside the sealing cavity to form a sealing surface of the flow control element. In this case, the seal has an inner core composed of a first material and an outer shell consisting of a second material different from the first material, wherein the core is covered with a sheath and the retainer is adapted to press said seal against the flow control member.

EFFECT: technical result is the creation of such a seal assembly in a valve that can provide higher thermal stability and/or erosion resistance while at the same time providing the possibility of relatively tight locking.

21 cl, 13 dwg