| 摘要 |
PROBLEM TO BE SOLVED: To improve junction quality by faying the main body section of a fluid flow control device and a component to be fayed to it by brazing with a hydrogen reducing furnace. SOLUTION: This fluid flow control device 1 is provided with a tubular main body section 2 connected with an inflow pipe 4 through which a fluid flows in and an outflow pipe 5 through which the fluid flows out and having a fluid outflow path 28 guiding the fluid flowing in through the inflow pipe 4 to the outflow pipe 5, a carriage 24 stored in the main body section 2 movably in the center axial direction of the main body section 2 to open or close the fluid outflow path 28, a drive source 3 arranged on the rear end face side of the main body section 2 and having a drive shaft 34 reciprocating the carriage 24 along the center axial direction of the main body section 2, and a drive source storage body 23 storing the components constituting the drive source 3 and fitted to the rear end face side of the main body section 2. The drive source storage body 23 has a flange-like plate 22 fayed to the main body section 2 by brazing, and a lug is provided on the main body section 2 side surface of the flange-like plate 22 at a portion kept in no contact with the main body section 2.
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