Glass sight gauge for high pressure vessel

Details Glass sight gauge for high pressure vessel Glass sight gauge for high pressure vessel

1984-03-02

1985-06-25

Stephan, Steven L.

Measuring and testing

Liquid level or depth gauge

Sight glass

116227, G01F 2302

Patent

active

045246181

ABSTRACT:
A tubular sight gauge with improved high pressure sealing characteristics comprising a conventional pyrex tube held in a gauge housing wherein each end is sealed by use of a stainless steel tube ring that concentrically sleeves around the glass tube with an internal shoulder that rests, on one side, directly against an abrupt change in internal diameter of the end openings in the gauge housing and has an O-ring on the other side of said shoulder and wherein each end of the glass tube is held within the opening by tube spacers (e.g., concentric plastic deformable spacers) such as to limit longitudinal movement (e.g., to approximately 1/16 inch). Such a tubular sight gauge exhibits the ability to maintain a hydraulic seal at pressures approaching 8,000 psi.

REFERENCES:
patent: 630047 (1899-08-01), Gilbert
patent: 942365 (1909-12-01), Buckner
patent: 1159764 (1915-11-01), Heller
patent: 2725844 (1955-12-01), Wittlin
patent: 3455163 (1969-07-01), Lukas et al.

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