Fluid controller

F - Mech Eng,Light,Heat,Weapons – 16 – K

Patent

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Details

F16K 1/38 (2006.01) F16K 1/04 (2006.01) F16K 1/48 (2006.01) F16K 25/00 (2006.01)

Patent

CA 2491974

A fluid controller (1) comprises a metal-made body (2) and a metal-made slide member (3). The metal-made body (2) has a fluid flow-in passage (2a), a fluid flow-out passage (2b), and a communication passage (2c) connecting the flow-in and flow-out passages. The metal-made slide member (3) closes or opens the communication passage (2c) by a tip end portion that is vertically moved in a vertical passage (11) including the communication passage (2c). At least a tip end portion (3a) of the slide member (3) includes, in weight%, 0.001-0.01% of C, 5% or less of Si, 2% or less of Mn, 0.03% or less of P, 100 ppm or less of S, 50 ppm or less of O, 18 to 25% of Cr, 15 to 25% of Ni, 4.5-7.0% of Mo, 0.5- 3.0% of Cu, and 0.1-0.3% of N, with the remainder being alloy substantially made up of Fe and other unavoidable impurities.

La présente invention concerne un régulateur de fluides (1) qui comprend un corps en métal (2) et un organe coulissant en métal (3). Le corps en métal (2) comprend un passage d'admission de fluide (2a), un passage d'évacuation de fluide (2b) et un passage de communication (2c) qui relie le passage d'admission de fluide (2a) au passage d'évacuation de fluide (2b). L'organe coulissant en métal (3) ouvre ou ferme le passage de communication (2c) par une partie bout terminal qui se déplace verticalement dans un passage vertical (11) comprenant le passage de communication (2c). Au moins une partie bout terminal (3a) de l'organe coulissant (3) comprend, en pourcentage en poids, de 0,001 à 0,01 % de C, 5 % max. de Si, 2 % max.de Mn, 0,03 % max. de P, 100 ppm max. de S, 50 ppm max. de O, de 18 à 25 % de Cr, de 15 à 25 % de Ni, de 4,5 à 7,0 % de Mo, de 0,5 à 3,0 % de Cu et de 0,1 à 0,3 % de N, le reste étant constitué d'un alliage sensiblement composé de Fe et d'autres impuretés inévitables.

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