Disc valve for sampling erosive process streams

Details Disc valve for sampling erosive process streams Disc valve for sampling erosive process streams

1984-08-16

1986-01-07

Levy, Stewart J.

Measuring and testing

Sampler, sample handling, etc.

Conduit or passageway section capture chamber

G01N 110

Patent

active

045627487

ABSTRACT:
A four-port disc valve for sampling erosive, high temperature process streams. A rotatable disc defining opposed first and second sampling cavities rotates between fired faceplates defining flow passageways positioned to be alternatively in axial alignment with the first and second cavities. Silicon carbide inserts and liners composed of .alpha. silicon carbide are provided in the faceplates and in the sampling cavities to limit erosion while providing lubricity for a smooth and precise operation when used under harsh process conditions.

REFERENCES:
patent: 3080759 (1963-03-01), McQuaid
patent: 4085618 (1978-04-01), Collins, Jr.
patent: 4224958 (1980-09-01), Kaplan et al.
patent: 4346610 (1982-08-01), Ishii et al.
"Ball Valves and Actuators"; 1976; Publication of Pittsburgh Brass Manufacturing Company; 8 pages.
"McCannaseal Ball Valves"; 1979; Bulletin No. 1202H; Hills-McCanna Co. Publication; 12 pages.

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