In-line valve for insertion in a pressurized fluid flow line

Details In-line valve for insertion in a pressurized fluid flow line In-line valve for insertion in a pressurized fluid flow line

1995-04-27

1996-01-16

Walton, George L.

Fluid handling

With repair, tapping, assembly, or disassembly means

Tapping a pipe, keg, or apertured tank under pressure

30 93, 138 89, 138 94, 138 97, 408 67, 408 72R, 408 83, 408101, F16K 4300, F16L 55128

Patent

active

054839904

ABSTRACT:
A valve adapted for insertion in a pressurized fluid flow line for blocking and sealing the flow of fluid through the line without disconnecting the line and to maintain the pressure in the upstream end of the line. The valve includes two body portions which may be clamped on the fluid flow line to form a valve body in which is adjustably mounted an elongated tubular outer shaft, and an elongated cylindrical inner shaft that is rotatably mounted through the tubular outer shaft and carries an annular hole cutter and a tubular seal. The inner shaft is rotatable for driving the annular hole cutter through the line and the outer shaft is rotatable for advancing the inner shaft and annular hole cutter and for positioning the tubular seal in the hole cut through the line to block and seal flow through the downstream portion of the line.

REFERENCES:
patent: 2287354 (1942-06-01), Misch
patent: 2899983 (1959-08-01), Farris
patent: 2972915 (1961-02-01), Milanovits et al.
patent: 3532113 (1970-10-01), McKean
patent: 3833020 (1974-09-01), Smith
patent: 3863667 (1975-02-01), Ward
patent: 4450857 (1984-05-01), Baugh et al.
patent: 4552170 (1985-11-01), Margrave
patent: 5076311 (1991-12-01), Marschke
patent: 5108421 (1991-05-01), Lucki et al.
patent: 5152310 (1992-10-01), O'Bryon

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