Pressure gauge for use with a corrosive fluid medium

Details Pressure gauge for use with a corrosive fluid medium Pressure gauge for use with a corrosive fluid medium

1985-08-12

1986-10-07

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

Bourdon

92 90, G01L 704

Patent

active

046152199

ABSTRACT:
A pressure gauge for use with a corrosive fluid containing a sulfide which includes a Bourdon tube made from stainless steel type 316 and having a first or outer hardened layer and a second or inner layer having a hardness equal to or less than Rc22. The Bourdon tube is welded to a socket and to a closure member using stainless steel type 316 such that the weld seals the interface between the first and second layers to isolate the hardened outer layer from the corrosive fluid.

REFERENCES:
patent: 18129 (1857-09-01), Ashcroft
patent: 647164 (1900-04-01), Staaf
patent: 2712240 (1955-07-01), Booth
patent: 3975967 (1976-08-01), Conti
patent: 4191056 (1980-03-01), Holden

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