Valves with lenticular or spherical closing member
AssigneeLegris SA
InventorAndre Legris
Life of this patent
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Abstract
The invention relates to an improvement to valves with lenticular or spherical closing member mounted for pivoting in a valve body with interposition of a circular tight seal. Downstream of the closing member, the valve body is provided with a bore inside which is removably mounted an annular member against which rests the tight seal, and which has a spherical part adopting the corresponding shape of the closing member, the said annular member comprising vent-holes. The invention finds a useful application in the production of valves.
Claims13
An improvement in a valve having a circular seal and a closing member mounted for pivoting inside a valve body, said closing member comprising a spherical surface for sealing against said circular seal wherein said circular seal is located downstream of said closing member and presents a curved portion adopting the corresponding shape of the closing member, and said valve body is provided, downstream of the closing member and of said circular seal with a bore inside of which is removably mounted an annular element against which rests the circular seal, said annular member containing vent-holes adapted to create a communication between the conduit downstream of the circular seal and a housing inside which the said seal is engaged, for an instantaneous balancing of pressures, said annular member being joined to the body via means situated on the side opposite the circular seal.
Dependencies are inferred from the claim text.